Quick example
Convert 1 standard gravity to m/s²
Standard gravity is a conventional acceleration value defined as exactly 9.80665 meters per second squared. It is also approximately 32.1740485564 feet per second squared.
Quick reference
Common acceleration conversions
| Starting acceleration | Equivalent |
|---|---|
| 1 g₀ | 9.80665 m/s² |
| 1 g₀ | 32.17404856 ft/s² |
| 1 m/s² | 0.1019716213 g₀ |
| 1 m/s² | 3.280839895 ft/s² |
| 1 m/s² | 3.6 km/h/s |
| 1 m/s² | 2.236936292 mph/s |
| 1 mph/s | 0.44704 m/s² |
| 1 Gal | 0.01 m/s² |
Unit definitions
Metric, imperial, gravity, and CGS acceleration
Meters and feet per second squared
These units describe how much velocity in meters or feet per second changes during each second.
km/h/s and mph/s
These units express a change in road-speed units during each second. One mph/s equals exactly 0.44704 m/s².
Standard gravity
The conventional standard gravity symbolized by g₀ is exactly 9.80665 m/s². Local gravitational acceleration varies by location.
Galileo
The Gal is a CGS acceleration unit equal to one centimeter per second squared, or exactly 0.01 m/s².
Direction matters
Negative acceleration does not always mean slowing down
An acceleration sign indicates direction relative to your chosen positive axis. A moving object slows down when acceleration points opposite its velocity and speeds up when both point in the same direction. This tool preserves signed values but does not infer velocity or motion direction.
Common questions
Acceleration conversion FAQ
How many meters per second squared are in one g?
One standard gravity, g₀, equals exactly 9.80665 meters per second squared.
How many g are in one meter per second squared?
One meter per second squared equals approximately 0.1019716213 standard gravity.
How do I convert mph per second to meters per second squared?
Multiply by exactly 0.44704. For example, 10 mph/s equals 4.4704 m/s².
What is a Gal in acceleration?
One Gal is one centimeter per second squared, equal to exactly 0.01 m/s². It is not a gallon.
Does negative acceleration always mean slowing down?
No. An object slows down only when its acceleration points opposite its velocity.