Acceleration Calculator

Acceleration in m/s² and in g, which is the legible one.

Acceleration in m/s² and in g, which is the legible one. a = (v − u) ÷ t.

Written and maintained by Mohit PatelLast checked August 4, 2026How we build these

Starting speed

m/s

Final speed

m/s

27.78 m/s is 100 km/h.

Time taken

Gravity

m/s²

Standard gravity by definition. Local values run 9.78 to 9.83.

Acceleration (m/s²)

5.556

0.567 g

Acceleration5.556 m/s²

In g0.5666

Speed change27.78 m/s

Distance covered69.45 m

Final speed in km/h100.01

a = (v − u) ÷ t. Reporting it in g is what makes it legible: 5.56 m/s² means little on its own, while 0.57 g is directly comparable to the 1 g everything on Earth already experiences downward.

How the Acceleration Calculator works

a = (v − u) ÷ t. The result is given in g as well as m/s², because that is what makes it interpretable: 5.6 m/s² means little on its own, while 0.57 g is directly comparable to the gravity everything already experiences.

Also known as: acceleration formula · g force calculator · deceleration calculator · how to calculate acceleration

Where to go next

The Acceleration question rarely arrives on its own. These are the ones that usually come with it:

Velocity Calculator — Final velocity under constant acceleration, with the distance.
Force Calculator — F = ma, in newtons, kilograms-force and pounds-force.
Free Fall Calculator — Fall speed and time, with the air resistance caveat stated.
Speed Distance Time Calculator — Any one of the three from the other two, in four units.

Sources

Frequently asked questions

How do I calculate acceleration?

Subtract the starting speed from the final speed and divide by the time. 0 to 27.78 m/s — that is 100 km/h — in 5 seconds gives 5.56 m/s².

What is g force?

Acceleration expressed in multiples of standard gravity, 9.80665 m/s². A 0.57 g launch is a quick car; sustained forces above about 5 g cause most people to lose consciousness.

What does negative acceleration mean?

Deceleration — the same arithmetic in the opposite direction. Braking from 20 m/s to a stop in 4 seconds is −5 m/s².

How far does it travel while accelerating?

s = ut + ½at², which this page shows. Under braking that figure is the stopping distance after the brakes are applied, not counting reaction time.

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