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Acceleration Converter

Convert acceleration between m/s², ft/s², g-force, mph/s, and more.

Decimal places4
  • Metres per second squared
    m/s²
    9.8066
  • Feet per second squared
    ft/s²
    32.174
  • Inches per second squared
    in/s²
    386.0886
  • Gal (centimetres per second squared)
    Gal
    980.665
  • Standard gravity
    g
    1
  • Kilometres per hour per second
    km/h/s
    35.3039
  • Miles per hour per second
    mph/s
    21.9369

How to convert acceleration units

  1. Enter a value

    Type the acceleration you want to convert into the value field.

  2. Pick the source unit

    Choose the unit your value is in, such as m/s², g-force, or mph/s.

  3. Read every conversion

    See the equivalent in all other acceleration units update live as you type.

  4. Copy what you need

    Copy a single row or copy all conversions at once with the button below.

Why use this tool

Every unit at once

One value converts to m/s², ft/s², in/s², Gal, standard gravity g, km/h/s, and mph/s simultaneously.

g-force built in

See how many times standard gravity your value is, useful for ride, vehicle, and physics work.

Adjustable precision

Slide the decimal places from 0 to 8 to match the accuracy your work needs.

Copy one or all

Copy any single conversion or grab the whole list in one tap for pasting into notes or a report.

Runs entirely on your device

Values are converted locally as you type. Nothing is uploaded or stored.

About this tool

The acceleration converter turns any acceleration value into every other common unit at the same time. Enter a value, pick its unit, and metres per second squared, feet per second squared, inches per second squared, Gal, standard gravity g, kilometres per hour per second, and miles per hour per second all appear together. Acceleration is the rate at which speed changes over time.

Every unit is defined relative to metres per second squared, the metric base unit for acceleration. Your input is first converted to m/s², then divided into each target unit, so the whole set stays consistent. Standard gravity, written g, equals 9.80665 m/s² and is the acceleration an object feels in free fall near the surface of the Earth, which is why one g reads as roughly 9.807 m/s².

The km/h/s and mph/s units express how quickly a vehicle gains speed, so a car adding 10 mph every second is accelerating at 10 mph/s. Gal, from the centimetre-gram-second system, is used in gravimetry and equals 0.01 m/s². Very small and very large numbers are shown in scientific notation so results stay readable, and you control the number of decimal places.

Negative amounts are rejected and non-numeric input shows a short hint instead of a broken result. For related conversions, try the speed converter, the force converter, or the everyday unit converter.

Frequently asked questions

How many m/s² is 1 g?
One g, standard gravity, equals exactly 9.80665 metres per second squared. It is the acceleration an object experiences in free fall near the Earth surface.
What does mph/s mean?
Miles per hour per second describes how fast speed increases. A value of 5 mph/s means the speed rises by five miles per hour every second.
What is a Gal?
The Gal is an acceleration unit from the centimetre-gram-second system, equal to one centimetre per second squared, or 0.01 m/s². It is often used in gravity measurements.
Can I convert negative acceleration values?
No. Acceleration here is treated as a magnitude, so negative inputs are rejected with a short hint. Enter zero or a positive number.
Is my input sent anywhere?
No. Every conversion happens on your device as you type. Nothing you enter is uploaded, logged, or stored.

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