Motion & Units
Every unit is converted through a common base (m/s²): the input is multiplied by its unit's factor, then divided by the target unit's factor.
All conversionsAcceleration shows up in different units depending on context, m/s² in physics, g-force in aerospace and motorsport, mph per second for a car’s 0-60 spec. This acceleration conversion calculator converts between all of them instantly, with a full breakdown of the math and a complete conversion table for every unit at once.
Every supported unit converts through a common base, meters per second squared (m/s²), the SI unit of acceleration. Your input value is first multiplied by its unit’s conversion factor to reach that common base, then divided by the target unit’s factor to reach the final result. This two-step approach is why the calculator can convert directly between any two of the seven supported units, not just to and from m/s² specifically.
| Unit | Symbol | Typical use |
|---|---|---|
| Meters per second squared | m/s² | The SI base unit of acceleration, used throughout physics and engineering |
| Feet per second squared | ft/s² | Common in US engineering and physics contexts |
| g (standard gravity) | g | Used in aerospace, motorsport, and anywhere acceleration is compared to Earth’s gravitational pull |
| Centimeters per second squared | cm/s² | A smaller CGS-system unit, common in some scientific contexts |
| Kilometers per hour per second | km/h per second | Used for vehicle acceleration specs in metric-unit countries |
| Miles per hour per second | mph per second | Used for vehicle 0-60 style acceleration specs in the US |
| Inches per second squared | in/s² | A smaller imperial unit, occasionally used in precision engineering |
Standard gravity, g, isn’t a measured average of Earth’s actual gravitational acceleration (which varies slightly by location and altitude), it’s a fixed, internationally defined constant used specifically for unit conversion purposes. This is why converting between g and any other acceleration unit always uses this exact figure rather than a location-dependent one.
Units like mph per second and km/h per second describe how quickly speed itself changes, which is mathematically identical to acceleration but expressed in units many drivers find more intuitive than m/s² or ft/s². “12 mph per second” directly tells you how much your speed increases every second, which maps naturally onto a car’s 0-60 mph time, while an equivalent m/s² figure requires an extra mental conversion step to picture the same thing.
Rather than requiring you to run seven separate conversions to see your value expressed in every unit, this calculator’s table shows all of them simultaneously from a single input. This is useful when you’re not sure which unit you’ll need next, or when comparing a spec sheet’s stated acceleration figure (perhaps in g) against a different source’s figure (perhaps in m/s²) without doing the math by hand.
Standard gravity is a fixed, internationally defined constant equal to 9.80665 m/s², used as a reference unit for acceleration. It’s not a live measurement of Earth’s actual gravitational pull at any specific location, which varies slightly by latitude and altitude, but a fixed conversion constant.
Both measure acceleration, the rate at which speed changes, but in different unit systems. m/s² is the SI unit used in physics and engineering. mph per second describes how many miles per hour your speed increases every second, a unit that maps more directly onto everyday vehicle acceleration specs like 0-60 times.
It converts through m/s² as a common base: your input value is first converted from its source unit into m/s², then that intermediate result is converted into the target unit. This two-step process is what allows direct conversion between any two of the seven supported units.