Acceleration Converter
Convert m/s², ft/s², standard gravity (g) and gal — for physics, vehicles and vibration.
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How to use this tool
Steps for using the Unit Converter.
- Type a number into From — standard gravities are preselected. Commas and scientific notation such as 2.5e3 are accepted.
- Pick the units to convert between; the result in meters per second squared (or whichever unit you choose) updates as you type. Use the swap button to reverse the conversion.
- Set the decimal places, turn on Show formula to see the calculation, and copy or share the result.
- Below the converter, the table lists every acceleration unit with its exact definition, and the links open dedicated pages for the most common pairs.
Example
3 standard gravities to meters per second squared
3 g29.41995 m/s²
Formula: m/s² = g × 9.80665Common use cases
- Vehicle and aircraft performance in g.
- Physics problems.
- Vibration and seismic measurements.
Acceleration unit table
| Unit | Symbol | System | Definition | In meters per second squared |
|---|---|---|---|---|
| Meter per second squared | m/s² | SI | SI unit of acceleration | 1 |
| Foot per second squared | ft/s² | US customary | Exactly 0.3048 m/s² | 0.3048 |
| Standard gravity | g | Other | Exactly 9.80665 m/s² | 9.80665 |
| Gal | Gal | Metric | 1 cm/s² (used in geophysics) | 0.01 |
Other unit converters
- Data Storage converterbit · B · kB · MB · GB · TB · KiB · MiB · GiB · TiB
- Fuel Economy converterkm/L · L/100 km · mpg (US) · mpg (UK)
- Density converterkg/m³ · g/cm³ · kg/L · lb/ft³ · lb/in³ · lb/gal (US)
- Torque converterN·m · kN·m · kgf·m · lbf·ft · lbf·in
- Flow Rate converterm³/s · m³/h · L/s · L/min · gal/min (US) · ft³/min
- Illuminance converterlx · klx · fc · ph
- Radiation Dose converterµSv · mSv · Sv · mrem · rem
About acceleration units
Acceleration is the change of velocity per unit time, in m/s². Standard gravity (g) is exactly 9.80665 m/s² and is used to express accelerations relative to Earth's gravity — car crashes, aircraft manoeuvres and roller coasters are described in g.
The gal (1 cm/s²) is a CGS unit used in geophysics and earthquake engineering.
Limitations
- Results are rounded for display only; the calculation keeps full precision (15 significant digits).
Frequently asked questions
What is 1 g in m/s²?
Exactly 9.80665 m/s² (standard gravity).
Is g the same as gravity everywhere?
No. Real gravity varies from about 9.78 to 9.83 m/s² with latitude and altitude; standard gravity is a fixed reference value.
How do I convert ft/s² to m/s²?
Multiply by exactly 0.3048.
Are these acceleration conversions exact?
Each unit is defined from its official definition (for example 1 inch = 2.54 cm exactly). Results are calculated in double precision and only rounded to the decimal places you choose when shown.