About this calculator
Enter a value and choose the units.
How to use it
- Enter the value.
- Choose the unit it is in and the unit you want.
- Read the result, or see every unit in the table.
The formula
Result = value × (m/s² in the “from” unit) ÷ (m/s² in the “to” unit)
- 1 g
- 9.80665 m/s²
- 1 km/h per second
- 0.2778 m/s²
Worked example
One g
- 1 g = 9.807 m/s².
- = 32.17 ft/s².
- = 35.3 km/h gained every second.
What the result means
The factors are exact international definitions, so results are as accurate as the digits shown.
Assumptions
- Standard gravity.
Limitations
- Real gravity varies slightly by place.
Frequently asked questions
What is 1 g?
9.80665 m/s², standard gravity.
What is 0–100 km/h in 10 seconds in g?
Average 2.78 m/s², about 0.28 g.
What is a gal?
1 cm/s², used in geophysics.
Last reviewed on 3 October 2026. Found a mistake? Tell us.