SwapUnits
    Shift between km/h, mph, m/s, and knots without leaving the dashboard.

    Speed Conversion Summary

    Speed conversions help compare dashboards, vehicle specs, and weather data. This guide explains the differences and keeps the math in one place.

    Different industries prefer different speed units: automotive dashboards show miles or kilometers per hour, pilots rely on knots, and physics models use meters per second. Use the reference below to keep them aligned.

    Base unit

    Meter per second (m/s)

    Units covered

    3

    Popular conversions

    2

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    Conversion pair tiles

    Jump directly to any available converter for speed conversion summary units.

    6 options
    km/h → mphKilometer per hour to Mile per hourView detailskm/h → m/sKilometer per hour to Meter per secondView detailsmph → km/hMile per hour to Kilometer per hourView detailsmph → m/sMile per hour to Meter per secondView detailsm/s → km/hMeter per second to Kilometer per hourView detailsm/s → mphMeter per second to Mile per hourView details

    Unit breakdown

    Every unit below references the SI base value so you can compare readings quickly.

    UnitSymbol1 unit in m/sNotes
    Kilometer per hourkm/h1 km/h = 0.277778 m/s—
    Mile per hourmph1 mph = 0.44704 m/s—
    Meter per secondm/sReference unit—

    Popular conversions

    These presets mirror the quick actions available inside the SwapUnits converter.

    Launch converter
    ConversionExampleReference pageWhy it matters
    km/h to mph1 km/h = 0.621371 mphOpenIdeal for quick checks inside the live converter.
    m/s to km/h1 m/s = 3.6 km/hOpenIdeal for quick checks inside the live converter.

    Frequently asked questions

    Why do pilots use knots?

    Knots are based on nautical miles, which tie directly to latitude and longitude. Using knots keeps navigation calculations consistent worldwide.

    How do I convert pace to speed?

    First convert pace (minutes per distance) into total seconds, divide distance by time to get speed, then convert to your preferred unit (km/h or mph).

    What is meters per second commonly used for?

    Meters per second is the SI unit for speed and appears in physics problems, wind tunnel tests, and scientific instrumentation.

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