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Converters

Acceleration Converter

Convert acceleration accurately between m/s², ft/s², in/s², Gal, mGal, standard gravity and km/h per second. Example: what is 2.5 m/s² in km/h/s?

Example: an acceleration of 2.5 meters per second squared. How many km/h per second is that?
Result 9 km/h/s 2.5 m/s² = 9 km/h/s
One-unit equivalent 1 m/s² = 3.6 km/h/s Negative values are allowed and can represent deceleration depending on the chosen direction.

✓ Conversion factors match data and definitions from the National Institute of Standards and Technology (NIST)

How is the conversion calculated? The converter uses m/s² as its internal reference. Standard gravity g₀ equals 9.80665 m/s², one Gal equals 0.01 m/s², and foot/inch conversions use their exact definitions.

This calculation runs in your browser. Your values are not sent to our server.

How it works

  1. Enter the acceleration value, then choose the current unit and the unit you want to convert to.
  2. Example: 2.5 meters per second squared equals exactly 9 kilometers per hour per second.
  3. Use the swap button to reverse the units without re-entering the value.
  4. The converter uses m/s² as its internal reference, with exact factors such as 1 ft/s² = 0.3048 m/s² and 1 Gal = 0.01 m/s².
  5. Negative values are allowed because they can represent deceleration or acceleration in the opposite direction, depending on your sign convention.

FAQ

How many m/s² are in standard gravity g₀?

Standard gravity g₀ equals exactly 9.80665 m/s².

How many km/h per second are in 1 m/s²?

1 m/s² equals exactly 3.6 km/h per second.

How many m/s² are in 1 ft/s²?

1 ft/s² equals exactly 0.3048 m/s².

What is a Gal?

The Gal is an acceleration unit used especially in geophysics. 1 Gal equals exactly 0.01 m/s².

Can acceleration be negative?

Yes. A negative sign can represent deceleration or acceleration in the opposite direction, so the converter allows signed values.

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