Acceleration Calculator
Find acceleration from a change in speed over time.
Your numbers
Your results
Acceleration (m/s²)
Acceleration (m/s²)
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In g-forces
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Distance travelled (m)
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Average velocity (m/s)
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Acceleration Calculator by TheCalcTools
How the Acceleration Calculator works
Enter the starting velocity, the final velocity and the time taken.
Acceleration is the change in velocity divided by time.
Distance assumes constant acceleration, so it uses the average velocity.
The formula
a = (v − u) ÷ ts = (u + v) ÷ 2 × t
Worked example
Using the default values shown in the calculator:
| Initial velocity (m/s) | 0 |
|---|---|
| Final velocity (m/s) | 30 |
| Time (s) | 6 |
- A car goes from 0 to 30 m/s in 6 s.
- a = 30 ÷ 6 = 5.00 m/s², about 0.510 g.
- Distance = 15 × 6 = 90 m.
Result:
| Acceleration (m/s²) | 5.000 |
|---|---|
| In g-forces | 0.510 |
| Distance travelled (m) | 90.00 |
| Average velocity (m/s) | 15.00 |
Frequently asked questions
Can acceleration be negative?
Yes. A negative value means the object is slowing down (deceleration) in the direction of the positive axis.
What is 1 g?
The standard acceleration of gravity, 9.80665 m/s².
Sources and further reading
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This calculator gives estimates for information only. Check important results independently before you rely on them. See our disclaimer.