https://speedometera.com/ https://speedometera.com/_astro/hero.CvT1twA2_fw71g.webpOnline speedometerIllustration of a highway at dusk with a speedometer gauge https://speedometera.com/100-kmh-to-mph/ https://speedometera.com/_astro/speed-limit-values.MhnVDCiS_ZPg0fH.webp100 km/h to mphSix speed-limit signs converted exactly: 20 mph = 32.19 km/h, 30 mph = 48.28 km/h, 60 mph = 96.56 km/h, 100 km/h = 62.14 mph, 120 km/h = 74.56 mph and 100 mph = 160.93 km/h, each with where that limit applies https://speedometera.com/_astro/100-kmh-to-mph.7H5Hh_yZ_Z25LiQN.webp100 km/h to mph illustration100 km/h to mph icon https://speedometera.com/og/100-kmh-to-mph.jpg100 km/h to mph: 62.14 mph (+ Chart & Speed Limits)100 km/h is 62.14 mph (100 ÷ 1.609344). See where 100 km/h is the speed limit, what 0–100 km/h means, and a 80–120 km/h to mph chart. https://speedometera.com/100-mph-to-kmh/ https://speedometera.com/_astro/speed-limit-values.MhnVDCiS_ZPg0fH.webp100 mph to km/hSix speed-limit signs converted exactly: 20 mph = 32.19 km/h, 30 mph = 48.28 km/h, 60 mph = 96.56 km/h, 100 km/h = 62.14 mph, 120 km/h = 74.56 mph and 100 mph = 160.93 km/h, each with where that limit applies https://speedometera.com/_astro/100-mph-to-kmh.Dq6FwUI6_Z10qEzp.webp100 mph to km/h illustration100 mph to km/h icon https://speedometera.com/og/100-mph-to-kmh.jpg100 mph to km/h: 160.93 km/h (+ Chart & Context)100 mph is 160.93 km/h (100 × 1.609344). It is above every US speed limit (max 85 mph). See US rail track-class speeds and an 80–120 mph chart. https://speedometera.com/120-kmh-to-mph/ https://speedometera.com/_astro/speed-limit-values.MhnVDCiS_ZPg0fH.webp120 km/h to mphSix speed-limit signs converted exactly: 20 mph = 32.19 km/h, 30 mph = 48.28 km/h, 60 mph = 96.56 km/h, 100 km/h = 62.14 mph, 120 km/h = 74.56 mph and 100 mph = 160.93 km/h, each with where that limit applies https://speedometera.com/_astro/120-kmh-to-mph.CjiSZYXf_2rju5I.webp120 km/h to mph illustration120 km/h to mph icon https://speedometera.com/og/120-kmh-to-mph.jpg120 km/h to mph: 74.56 mph (+ Chart & Speed Limits)120 km/h is 74.56 mph (120 ÷ 1.609344). Where 120 km/h is the limit (India's expressways, UK motorway equivalent), US comparison and a 100–140 chart. https://speedometera.com/20-mph-to-kmh/ https://speedometera.com/_astro/speed-limit-values.MhnVDCiS_ZPg0fH.webp20 mph to km/hSix speed-limit signs converted exactly: 20 mph = 32.19 km/h, 30 mph = 48.28 km/h, 60 mph = 96.56 km/h, 100 km/h = 62.14 mph, 120 km/h = 74.56 mph and 100 mph = 160.93 km/h, each with where that limit applies https://speedometera.com/_astro/20-mph-to-kmh.DeeZBK9z_mPqoJ.webp20 mph to km/h illustration20 mph to km/h icon https://speedometera.com/og/20-mph-to-kmh.jpg20 mph to km/h: 32.19 km/h (+ Chart & 20 mph Zones)20 mph is 32.19 km/h (20 × 1.609344). It is the default limit on Wales's restricted roads since 2023 and a fast bike pace. Chart 5–40 mph in km/h. https://speedometera.com/30-mph-to-kmh/ https://speedometera.com/_astro/speed-limit-values.MhnVDCiS_ZPg0fH.webp30 mph to km/hSix speed-limit signs converted exactly: 20 mph = 32.19 km/h, 30 mph = 48.28 km/h, 60 mph = 96.56 km/h, 100 km/h = 62.14 mph, 120 km/h = 74.56 mph and 100 mph = 160.93 km/h, each with where that limit applies https://speedometera.com/_astro/30-mph-to-kmh.BZwapb9u_Z1raTCC.webp30 mph to km/h illustration30 mph to km/h icon https://speedometera.com/og/30-mph-to-kmh.jpg30 mph to km/h: 48.28 km/h (+ Stopping Distances)30 mph is 48.28 km/h (30 × 1.609344). The UK built-up limit, plus Highway Code stopping distances at 20–70 mph in metres and km/h, and a 10–50 mph chart. https://speedometera.com/60-mph-to-kmh/ https://speedometera.com/_astro/speed-limit-values.MhnVDCiS_ZPg0fH.webp60 mph to km/hSix speed-limit signs converted exactly: 20 mph = 32.19 km/h, 30 mph = 48.28 km/h, 60 mph = 96.56 km/h, 100 km/h = 62.14 mph, 120 km/h = 74.56 mph and 100 mph = 160.93 km/h, each with where that limit applies https://speedometera.com/_astro/60-mph-to-kmh.Jl6dnHcv_HJBUs.webp60 mph to km/h illustration60 mph to km/h icon https://speedometera.com/og/60-mph-to-kmh.jpg60 mph to km/h: 96.56 km/h (+ Chart & UK Speed Limit)60 mph is 96.56 km/h (60 × 1.609344). It is the UK national speed limit on single carriageways and the 0–60 benchmark. Chart 40–80 mph in km/h. https://speedometera.com/altitude/ https://speedometera.com/_astro/altitude-geoid-offset-us.DTrQW9RM_1nwIFl.webpWhat Is My Elevation? Free GPS AltimeterBar chart of how many feet the GPS ellipsoid sits above sea level (the geoid) at 12 US places: Chicago 110 ft, Phoenix 98, Atlanta and Badwater Basin 97, Mount Washington 87, New Orleans 85, Miami 84, Seattle 78, Denver 56, Salt Lake City 55, Pikes Peak 49, Leadville 43 https://speedometera.com/_astro/altitude.CGq34WOC_Z11xKsL.webpAltitude: What Is My Elevation? illustrationAltitude: What Is My Elevation? icon https://speedometera.com/og/altitude.jpgWhat Is My Elevation? Free Elevation Finder & AltimeterWhat is my elevation? Free GPS altimeter: see your altitude in feet or meters, its vertical accuracy, and your lowest, highest and total climb. https://speedometera.com/average-cycling-speed/ https://speedometera.com/_astro/average-cycling-speed.JOlQW0nn_SesLz.webpAverage Cycling SpeedBar chart of bicycle reference speeds: measured trail rider mean 10.6 mph, 85th percentile 13.7 mph, recumbent mean 14.3 mph, Class 1 and 2 e-bike cutoff 20 mph, Tour de France winner averages 24 mph in 1990 and 27.2 mph in 2025, Class 3 e-bike cutoff 28 mph https://speedometera.com/_astro/average-cycling-speed.D1owY3DQ_24rwuP.webpAverage Cycling Speed illustrationAverage Cycling Speed icon https://speedometera.com/og/average-cycling-speed.jpgAverage Cycling Speed: Bike mph by Rider & E-Bike ClassAverage cycling speed is about 10–16 mph. See measured US trail speeds, road vs e-bike classes, Tour de France averages and a live GPS bike speedometer. https://speedometera.com/average-walking-speed/ https://speedometera.com/_astro/average-walking-speed-by-age.DUd8aIj4_Bs2hp.webpAverage Walking SpeedHorizontal bar chart of average walking speed by age and sex: men 3.0 to 3.2 mph and women 2.9 to 3.1 mph from 20 to 59, falling to 2.2 and 2.1 mph after age 80 https://speedometera.com/_astro/average-walking-speed.a28SdzUw_1040D4.webpAverage Walking Speed illustrationAverage Walking Speed icon https://speedometera.com/og/average-walking-speed.jpgAverage Walking Speed by Age (mph, km/h) + Free Live TrackerAverage walking speed is about 3 mph (4.8 km/h). See walking speed by age and sex from a 23,111-person meta-analysis, then measure your own pace live. https://speedometera.com/bike-speedometer/ https://speedometera.com/_astro/bike-speedometer-wheel-size-error.93Fs3I16_2m1MXD.webpBike Speedometer: Free GPS Speedometer for Cycle and MotorcycleBar chart of bike computer error when the wheel size is left at 700×23C (2,096 mm): riding 700×25C reads 0.4% low, 700×28C 1.9% low, 700×32C 2.7% low, 700×38C 3.9% low, 29×2.2 8.8% low, 26×1.95 2.2% high and 20×1.75 38.3% high https://speedometera.com/_astro/bike-speedometer.jYRpxgpa_AxTTe.webpBike Speedometer illustrationBike Speedometer icon https://speedometera.com/og/bike-speedometer.jpgBike Speedometer: Free GPS Speed for Cycle & MotorcycleFree online bike speedometer: live GPS speed, max and average for bicycles, motorcycles and scooters in mph or km/h, plus a wheel size chart for bike computers. https://speedometera.com/boat-speed/ https://speedometera.com/_astro/boat-speed-sog-vs-stw.DTA_yaM8_dzKNJ.webpBoat SpeedometerBar chart of GPS speed over ground for a boat holding 8 knots through the water: 5 knots against a 3 knot current, 7 knots against 1 knot, 8 knots in slack water, 9 knots with 1 knot of current and 11 knots with 3 knots, with mph values https://speedometera.com/_astro/boat-speed.B_grmfUA_he83m.webpBoat Speedometer illustrationBoat Speedometer icon https://speedometera.com/og/boat-speed.jpgBoat Speedometer: Free GPS Speed in Knots and mphFree GPS boat speedometer: live speed over ground in knots or mph, top speed and trip distance. Plus SOG vs STW, hull speed and no-wake zone rules. https://speedometera.com/bullet-train-speed/ https://speedometera.com/_astro/bullet-train-speed.YwAqMeyO_ZMuYDg.webpBullet Train Speed: How Fast Is Japan's Shinkansen?Bar chart in mph: L0 maglev record 375 mph and planned Chuo Shinkansen 311 mph in red, E5 Hayabusa 199 mph, India MAHSR operating 199 mph in red, Sanyo N700 186 mph, Tokaido N700S 177 mph, Hokkaido H5 162 mph and H5 in the Seikan Tunnel 99 mph https://speedometera.com/_astro/icon-travel.Ct6q1-4Y_1XzRbb.webpBullet Train Speed illustrationBullet Train Speed icon https://speedometera.com/og/bullet-train-speed.jpgBullet Train Speed: Shinkansen, Maglev & India (mph)Bullet train speed in mph and km/h: Shinkansen 177–199 mph, maglev 375 mph record, India's 320 km/h MAHSR. Measure your train live with GPS. https://speedometera.com/car-speedometer/ https://speedometera.com/_astro/car-speedometer-distance-per-second.wmpV-_cu_xjvNa.webpCar Speedometer: Check Your Car's Speed With GPSBar chart of distance a car travels in one second: 8.3 m at 30 km/h, 13.9 m at 50 km/h, 13.4 m at 30 mph, 22.2 m at 80 km/h, 27.8 m at 100 km/h, 29.1 m at 65 mph, 33.3 m at 120 km/h, 33.5 m at 75 mph https://speedometera.com/_astro/icon-vehicle.BqrBSUXh_Z2gBftH.webpCar Speedometer illustrationCar Speedometer icon https://speedometera.com/og/car-speedometer.jpgCar Speedometer Online: Free GPS Speed for Any CarFree online car speedometer: your phone's GPS shows true speed in km/h or mph. Check a broken or inaccurate dash, use HUD mode, learn how car speedometers work. https://speedometera.com/fastest-trains-in-the-world/ https://speedometera.com/_astro/fastest-trains-in-the-world.BBMMEt5Q_ZlSH1V.webpFastest Trains in the World (2026 List)Bar chart in mph: L0 maglev record 375 mph, TGV V150 record 357 mph, then service speeds CR400 Fuxing 217, E5 Hayabusa 199, Al Boraq 199, Shanghai Maglev 186, Frecciarossa 1000 186, NextGen Acela 160 and Brightline 125 mph https://speedometera.com/_astro/icon-travel.Ct6q1-4Y_1XzRbb.webpFastest Trains in the World illustrationFastest Trains in the World icon https://speedometera.com/og/fastest-trains-in-the-world.jpgFastest Train in the World: 2026 List (mph & km/h)The fastest train in the world in 2026, in mph and km/h: China's CR400 (217 mph), the 375 mph maglev record, Acela and Brightline, plus a GPS train speedometer. https://speedometera.com/fuel-cost-calculator/ https://speedometera.com/_astro/fuel-cost-calculator-mpg-curve.BCBmOGL9_1hxDMD.webpFuel Cost Calculator: Trip Gas Cost and MPGLine chart of US gallons used per 1,000 miles against fuel economy from 10 to 50 mpg: improving from 10 to 20 mpg saves 50 gallons (about $214 at $4.284 a gallon), while 40 to 50 mpg saves only 5 gallons (about $21) https://speedometera.com/_astro/fuel-cost-calculator.CuIuBTJB_ZKuVs9.webpFuel Cost Calculator illustrationFuel Cost Calculator icon https://speedometera.com/og/fuel-cost-calculator.jpgFuel Cost Calculator: Free Gas & Trip Cost (mpg, L/100 km)Free fuel cost calculator: trip gas cost from distance, mpg or L/100 km and fuel price, with round trip, cost per mile and cost split per person. https://speedometera.com/gps-vs-car-speedometer/ https://speedometera.com/_astro/gps-vs-car-speedometer-r39-range.BMMaPuxU_eY9AA.webpGPS vs Car Speedometer: Which Is Accurate?Range chart of true speed a UN R39 speedometer may show: dash 25 mph means 19.3 to 25 mph, dash 45 mph means 37.5 to 45 mph, dash 65 mph means 55.7 to 65 mph, dash 75 mph means 64.8 to 75 mph https://speedometera.com/_astro/gps-vs-car-speedometer.G6xGyEkq_MLxGU.webpGPS vs Car Speedometer illustrationGPS vs Car Speedometer icon https://speedometera.com/og/gps-vs-car-speedometer.jpgSpeedometer Accuracy: GPS vs Car Speedometer (Free Test)Speedometer accuracy explained: why car speedometers read high, the legal limits, how tires change it, and a free GPS speedometer to test your car in mph. https://speedometera.com/how-fast-can-a-human-run/ https://speedometera.com/_astro/how-fast-can-a-human-run-speeds.qU5F6lm-_Z2drscP.webpHow Fast Can a Human Run?Bar chart of human running speeds: Usain Bolt peak 27.8 mph, Bolt 100 m average 23.4 mph, men's 400 m record 20.8 mph, men's 5,000 m record 14.8 mph, marathon record 13.0 mph, 8:00 mile runner 7.5 mph, 10:00 mile jogger 6.0 mph, 13:00 mile run-walk 4.6 mph https://speedometera.com/_astro/icon-activity.t_1Ga80G_RiVOh.webpHow Fast Can a Human Run? illustrationHow Fast Can a Human Run? icon https://speedometera.com/og/how-fast-can-a-human-run.jpgHow Fast Can a Human Run? Top Speed, Records & AveragesHow fast can a human run? Usain Bolt peaked at 27.8 mph (44.72 km/h). World record speeds by distance, average runner speeds and a free running speedometer. https://speedometera.com/how-fast-do-animals-run/ https://speedometera.com/_astro/how-fast-do-animals-run-speeds.CJIEMTvk_Z1GImz5.webpHow Fast Do Animals Run? Cheetah, Horse & Dog SpeedsBar chart of measured animal top speeds: cheetah timed run 64.2 mph, wild cheetah GPS 57.9 mph, pronghorn 50 mph, racehorse 2 furlongs 43.7 mph, ostrich 43 mph, greyhound 42.5 mph, racehorse 1.5 miles 37.8 mph, red kangaroo 37.3 mph, grizzly bear 35 mph, Usain Bolt 27.8 mph, Asian elephant 15.2 mph https://speedometera.com/_astro/how-fast-do-animals-run.DinYmcVJ_1DpkUl.webpHow Fast Do Animals Run? illustrationHow Fast Do Animals Run? icon https://speedometera.com/og/how-fast-do-animals-run.jpgHow Fast Do Animals Run? Cheetah, Horse & Dog SpeedsHow fast does a cheetah run? 64 mph timed, 58 mph wild. Plus horse, greyhound, pronghorn, ostrich and bear speeds from studies, and a free GPS speedometer. https://speedometera.com/how-fast-do-planes-fly/ https://speedometera.com/_astro/how-fast-do-planes-fly-speeds.BY3xpli6_ZCPjpE.webpHow Fast Do Planes Fly?Bar chart of aircraft speeds in mph: Cessna 172 top cruise 143 mph, 250-knot limit below 10,000 feet 288 mph, approach category D starting at 162 mph, A320 Mach 0.82 limit 544 mph, Mach 0.85 cruise 564 mph at 35,000 feet, 714 mph ground speed with a 150 mph jet stream, and the speed of sound 664 mph at 35,000 feet https://speedometera.com/_astro/how-fast-do-planes-fly.BmqX3RKt_kitvy.webpHow Fast Do Planes Fly? illustrationHow Fast Do Planes Fly? icon https://speedometera.com/og/how-fast-do-planes-fly.jpgHow Fast Does a Plane Fly? Speeds in mph + Free GPS ToolHow fast does a plane fly? Jets cruise near 560 mph at 35,000 ft. Cruise, takeoff and landing speeds by aircraft, plus a free GPS speedometer for your flight. https://speedometera.com/how-fast-do-trains-go/ https://speedometera.com/_astro/us-train-speed-track-class.KAKFXlUw_1uuyYx.webpHow Fast Do Trains Go? Live Train SpeedometerBar chart of US passenger train speed limits by FRA track class, from 15 mph on Class 1 track to 220 mph on Class 9 https://speedometera.com/_astro/icon-travel.Ct6q1-4Y_1XzRbb.webpHow Fast Do Trains Go illustrationHow Fast Do Trains Go icon https://speedometera.com/og/how-fast-do-trains-go.jpgHow Fast Do Trains Go? US Speeds + Free Live CheckerHow fast do trains go? Amtrak Acela tops 160 mph, most long-distance trains 79 mph, freight 40–60 mph. See FRA limits and check your train live by GPS. https://speedometera.com/hud/ https://speedometera.com/_astro/hud-app-windshield-reflection.D1cHI-g9_1IUic9.webpHUD App: Phone Head-Up Display SpeedometerSide-view diagram of a phone lying flat on a car dashboard, its flipped speed display reflecting off the windshield to the driver's eye, with notes that glass reflects about 9% of light at 60 degrees https://speedometera.com/_astro/hud.CoTw9z7N_hi8sM.webpHUD Speedometer illustrationHUD Speedometer icon https://speedometera.com/og/hud.jpgHUD App: Free Head-Up Display Speedometer for Your PhoneFree HUD app in your browser: lay your phone under the windshield and see your GPS speed reflected in mph or km/h. Setup, night tips, legality. No download. https://speedometera.com/km-to-miles/ https://speedometera.com/_astro/km-to-miles-races.zhvVjc-o_sYlD5.webpkm to milesBar chart of race distances converted from km to miles: 1 km = 0.62 mi, 5K = 3.11 mi, 10K = 6.21 mi, 15K = 9.32 mi, half marathon = 13.11 mi, marathon = 26.22 mi, 50K = 31.07 mi https://speedometera.com/_astro/km-to-miles.3OyEPsd3_1cRHXu.webpkm to miles Converter illustrationkm to miles Converter icon https://speedometera.com/og/km-to-miles.jpgkm to miles Converter: 5K, 10K, Marathon & Full ChartConvert km to miles instantly: divide by 1.609344. 5 km = 3.11 miles, 10 km = 6.21 miles, marathon = 26.22 miles. Free converter, race table and tricks. https://speedometera.com/kmh-to-mph/ https://speedometera.com/_astro/kmh-to-mph-signs.BHn0RRLO_2lNgQC.webpkm/h to mphRow of round km/h speed-limit signs (30, 50, 60, 80, 90, 100, 110, 120, 130) with each value converted to mph below: 18.6, 31.1, 37.3, 49.7, 55.9, 62.1, 68.4, 74.6 and 80.8 mph https://speedometera.com/_astro/kmh-to-mph.j7yrZzuk_1zwTvp.webpkm/h to mph Converter illustrationkm/h to mph Converter icon https://speedometera.com/og/kmh-to-mph.jpgkm/h to mph Converter: Free Chart to 300 km/h & FormulaConvert km/h to mph instantly: divide by 1.609344. 100 km/h = 62.1 mph. Free converter, full 5–300 km/h table, mental-math tricks and road-sign guide. https://speedometera.com/knots-to-mph/ https://speedometera.com/_astro/knots-to-mph-us-thresholds.Coz9c8PG_N5qnv.webpKnots to mphBar chart of US thresholds defined in knots converted to mph: small craft advisory 23.0 mph, gale warning 39.1 mph, storm warning 55.2 mph, Category 1 hurricane 73.6 mph, Category 5 157.7 mph, 200 knot limit under Class B airspace 230.2 mph, 250 knot limit below 10,000 feet 287.7 mph https://speedometera.com/_astro/knots-to-mph.U1Tu8CWE_ZXVX6J.webpKnots to mph Converter illustrationKnots to mph Converter icon https://speedometera.com/og/knots-to-mph.jpgKnots to mph Converter: Free Calculator and ChartConvert knots to mph instantly: 1 knot = 1.15078 mph. Free knots to mph calculator, quick chart, formula, and US boating, aviation and hurricane examples. https://speedometera.com/miles-to-km/ https://speedometera.com/_astro/miles-to-km-fibonacci.CxmSmdnn_Z1EzSoe.webpmiles to kmTable showing the Fibonacci miles-to-km trick: 3 mi ≈ 5 km, 5 ≈ 8, 8 ≈ 13, 13 ≈ 21, 21 ≈ 34, 34 ≈ 55, 55 ≈ 89 and 89 ≈ 144, with the exact km and an error of about 0.5% for larger values https://speedometera.com/_astro/miles-to-km.Ck9ScFFw_Z1GvDFG.webpmiles to km Converter illustrationmiles to km Converter icon https://speedometera.com/og/miles-to-km.jpgmiles to km Converter: Formula, Chart & Fibonacci TrickConvert miles to km instantly: multiply by 1.609344. 1 mile = 1.61 km, 10 miles = 16.09 km, 100 miles = 160.93 km. Free converter, chart and mental tricks. https://speedometera.com/mph-to-kmh/ https://speedometera.com/_astro/mph-to-kmh-ruler.DEzk4SpL_1kbE13.webpmph to km/hA ruler with an mph scale from 0 to 80 on top and the matching km/h scale from 0 to 120 below; US limits 25, 55 and 70 mph are marked as 40.2, 88.5 and 112.7 km/h, and Canadian signs of 50, 80 and 110 km/h as 31.1, 49.7 and 68.4 mph https://speedometera.com/_astro/mph-to-kmh.4Mq5hlUa_Z2nqIhG.webpmph to km/h Converter illustrationmph to km/h Converter icon https://speedometera.com/og/mph-to-kmh.jpgmph to km/h Converter: Free Miles per Hour to km/hConvert mph to km/h instantly: multiply by 1.609344. 60 mph = 96.6 km/h, 65 mph = 104.6 km/h. Free converter, quick table and Canada driving guide. https://speedometera.com/mph-to-knots/ https://speedometera.com/_astro/mph-to-knots-scale.Ci0LBhJg_1Tcfv2.webpmph to KnotsTwo aligned scales: miles per hour from 0 to 100 on top and knots from 0 to 80 below, showing each 10 mph mark in knots, such as 50 mph = 43.4 knots and 100 mph = 86.9 knots https://speedometera.com/_astro/mph-to-knots.7sUMI3lF_ZuTNe0.webpmph to Knots Converter illustrationmph to Knots Converter icon https://speedometera.com/og/mph-to-knots.jpgmph to Knots Converter: Formula, Chart and Table (Free)Convert mph to knots instantly: knots = mph × 0.868976. Free converter, quick chart from 1 to 500 mph, mental shortcut and US boating and aviation examples. https://speedometera.com/mph-to-ms/ https://speedometera.com/_astro/mph-to-ms-everyday.3GBeth5A_1ih5BD.webpmph to m/sBar chart of everyday speeds in meters per second: walking 3 mph is 1.3 m/s, Usain Bolt's 100 m average 10.4 m/s, 25 mph school zone 11.2 m/s, Beaufort 8 gale 17.4 m/s, 65 mph highway 29.1 m/s and 74 mph hurricane wind 33.1 m/s https://speedometera.com/_astro/mph-to-ms.BfG6vb_t_yOnnJ.webpmph to m/s Converter illustrationmph to m/s Converter icon https://speedometera.com/og/mph-to-ms.jpgmph to m/s Converter: Miles per Hour to Meters per SecondConvert mph to m/s instantly: 1 mph = 0.44704 m/s exactly. Free calculator, full chart, mental shortcut, wind (Beaufort) and sprint examples. https://speedometera.com/compass/ https://speedometera.com/_astro/compass-declination-us.Dd1z_ym8_Z2iyOQ2.webpOnline CompassDiverging bar chart of magnetic declination in US cities in October 2026: Seattle 14.9° east, Anchorage 14.0° E, San Francisco 12.8° E, Los Angeles 11.3° E, Honolulu 9.3° E, Denver 7.5° E, Houston 1.7° E, Chicago 4.2° west, Miami 7.4° W, New York 12.5° W, Augusta Maine 14.7° W https://speedometera.com/_astro/compass.iSMrgIVw_ZPBDll.webpOnline Compass illustrationOnline Compass icon https://speedometera.com/og/compass.jpgCompass Online: Free Digital Compass for Your PhoneFree compass online: open it on your phone to see your heading in degrees and a 16-point direction, with magnetic and true north. No app, no download. https://speedometera.com/pace-calculator/ https://speedometera.com/_astro/pace-calculator-race-chart.CVoCm8ri_1KSPQm.webpPace CalculatorRunning pace chart showing per-mile paces from 6:00 to 12:00 with pace per km, speed in mph as bars, and the matching 5K, 10K and marathon finish times; an 8:00 mile is 7.5 mph and a 3:29:45 marathon https://speedometera.com/_astro/pace-calculator.CvdEmkHX_1Is6NJ.webpPace Calculator illustrationPace Calculator icon https://speedometera.com/og/pace-calculator.jpgPace Calculator & Marathon Pace Chart: per Mile & km (Free)Free running pace calculator: get pace per mile and per km, speed in mph, finish times and even splits for a 5K, 10K, half marathon or marathon. https://speedometera.com/running-speedometer/ https://speedometera.com/_astro/running-speedometer-pace-swing.Ta79ySFS_fOOuf.webpRunning SpeedometerBar chart of how far the live pace readout swings when GPS speed is off by plus or minus 0.2 m/s: 71 s per km at a 7:00 per km pace, 52 s at 6:00, 44 s at 5:30, 36 s at 5:00, 29 s at 4:30, 23 s at 4:00 and 18 s at 3:30 per km https://speedometera.com/_astro/icon-activity.t_1Ga80G_RiVOh.webpRunning Speedometer illustrationRunning Speedometer icon https://speedometera.com/og/running-speedometer.jpgRunning Speedometer: Free Live GPS Running Speed & PaceFree running speedometer for your phone: live GPS speed in mph or km/h, pace per mile or km, top speed and distance. No app, plus a speed-to-pace table. https://speedometera.com/speed-converter/ https://speedometera.com/_astro/speed-converter-unit-sizes.BUE0FQsf_1iDQDk.webpSpeed ConverterBar chart showing one unit of each speed scale in mph: 1 m/s = 2.2369 mph, 1 knot = 1.1508 mph, 1 mph = 1, 1 ft/s = 0.6818 mph, 1 km/h = 0.6214 mph; Mach 1 at sea level = 761.2 mph https://speedometera.com/_astro/speed-converter.V3NGdXFl_Z1AVGUX.webpSpeed Converter illustrationSpeed Converter icon https://speedometera.com/og/speed-converter.jpgSpeed Converter: mph, km/h, Knots, m/s, ft/s, Mach (Free)Free speed converter for mph, km/h, knots, m/s, ft/s and Mach. Exact factors, a full conversion chart, unit history and worked US examples. https://speedometera.com/speed-distance-time-calculator/ https://speedometera.com/_astro/speed-distance-time-calculator-round-trip.CXNBm9gd_20oe1k.webpSpeed, Distance and Time CalculatorInfographic of a 120-mile round trip: 60 miles out at 30 mph takes 2 hours, 60 miles back at 60 mph takes 1 hour, so the average speed is 40 mph, not the 45 mph arithmetic mean https://speedometera.com/_astro/speed-distance-time-calculator.Cyf6UHcQ_Z12CYuN.webpSpeed Distance Time Calculator illustrationSpeed Distance Time Calculator icon https://speedometera.com/og/speed-distance-time-calculator.jpgSpeed Calculator: Speed, Distance & Time (Free, mph)Free speed calculator: solve speed, distance or time from the other two, in mph, km/h, knots or m/s, plus true average speed for multi-leg trips. https://speedometera.com/speed-of-sound/ https://speedometera.com/_astro/speed-of-sound-altitude.Bwy4MadC_2vVX3h.webpSpeed of Sound in mphBar chart of the speed of sound by altitude in the US Standard Atmosphere: 761 mph at sea level, 735 mph at 10,000 ft, 707 mph at 20,000 ft, 678 mph at 30,000 ft, and 660 mph from 36,089 ft to 65,617 ft https://speedometera.com/_astro/speed-of-sound.DXKBOfK9_Z2fOpNB.webpSpeed of Sound (Mach to mph) Converter illustrationSpeed of Sound (Mach to mph) Converter icon https://speedometera.com/og/speed-of-sound.jpgSpeed of Sound in mph: Mach 1 Converter and Altitude ChartThe speed of sound is 761 mph (1,225 km/h) at sea level and 660 mph above 36,000 ft. Free Mach to mph converter, altitude table and formula. https://speedometera.com/speedometer-calibration/ https://speedometera.com/_astro/speedometer-calibration-true-speed.Dn4GJhzW_d7OXb.webpSpeedometer Calibration CalculatorBar chart of true speed when the speedometer shows 60 mph: 58.2 mph with tires 3% smaller, 60 mph stock, 61.8 mph with tires 3% larger, 63.9 mph after 31 to 33 inch tires, 54.6 mph after 3.73 to 4.10 gears https://speedometera.com/_astro/speedometer-calibration.DezZ9R7T_ZBsUUD.webpSpeedometer Calibration Calculator illustrationSpeedometer Calibration Calculator icon https://speedometera.com/og/speedometer-calibration.jpgSpeedometer Calibration Calculator: Check Your ErrorCheck your speedometer calibration against GPS or a timed mile. Get the percent error, a correction factor and a corrected speed table in mph. https://speedometera.com/tire-size-calculator/ https://speedometera.com/_astro/tire-size-diameter-speedometer.BzvuAieU_ZGm7dk.webpTire Size CalculatorDiagram of a tire and wheel showing sidewall, rim diameter and overall diameter, with the size code P225/45R17 decoded and the formula diameter = 2 × sidewall + rim https://speedometera.com/_astro/tire-size-calculator.C6nj5wXS_Z1YvY2W.webpTire Size Calculator illustrationTire Size Calculator icon https://speedometera.com/og/tire-size-calculator.jpgTire Size Calculator: Free Size Comparison & Speedo ErrorFree tire size calculator: compare two tire sizes for diameter, sidewall, width and revs per mile, see plus sizes and your true speed at 60 mph. https://speedometera.com/odometer/ https://speedometera.com/_astro/odometer-gps-distance.ZwGH_qzH_Z1Bn8BH.webpDistance Tracker: GPS Trip OdometerInfographic: phone GPS fixes every second are filtered (fixes worse than 50 m and speeds under 1.12 mph ignored), added up as great-circle distance, giving a trip of 12.34 mi in 45:00 moving time, worth $8.95 at 72.5 cents or $9.38 at 76 cents per mile https://speedometera.com/_astro/icon-tools.Bg2SAhCD_mGSa.webpTrip Odometer illustrationTrip Odometer icon https://speedometera.com/og/odometer.jpgDistance Tracker: Free GPS Trip Odometer (mi & km)Free online distance tracker: a GPS trip odometer that counts miles or km and moving time, copies the total for your mileage log and saves GPX. No app. https://speedometera.com/wheel-offset-calculator/ https://speedometera.com/_astro/wheel-offset-positive-zero-negative.DFwzP9Ph_Z1h9lN4.webpWheel Offset CalculatorCross-section diagrams of the same 8-inch wheel with positive offset ET+45 (backspacing 6.27 in), zero offset ET0 (4.50 in) and negative offset ET−25 (3.52 in), showing the hub mounting face relative to the rim centreline https://speedometera.com/_astro/wheel-offset-calculator.D_qBaaCg_1X2J11.webpWheel Offset Calculator illustrationWheel Offset Calculator icon https://speedometera.com/og/wheel-offset-calculator.jpgWheel Offset Calculator: Free ET & Backspacing ToolFree wheel offset calculator: compare two wheels by width and ET offset, get backspacing and see how far the new wheel pokes out or tucks in, in mm and inches.