Acceleration Calculator
Instantly calculate acceleration from initial velocity, final velocity and time. Free, accurate physics tool with optional force (F=ma) and a full worked breakdown.
Calculate Acceleration
Enter the initial velocity, final velocity and the time taken for that change to get an instant acceleration result, plus force if you add a mass.
Motion Details
Enter your velocity and time variables
Acceleration Result
Calculated from your motion values
Real-World Acceleration Examples
Typical acceleration values for everyday motion and physics scenarios, to help put your own result into context.
| Scenario | Acceleration (m/s²) | In “g” (× gravity) |
|---|---|---|
| Car, 0-60 mph in 6 seconds | 4.47 m/s² | 0.46 g |
| Free fall on Earth | 9.81 m/s² | 1.00 g |
| Sprinter off the blocks | ~6 m/s² | 0.61 g |
| Passenger jet takeoff roll | ~2.5 m/s² | 0.25 g |
| Formula 1 car braking | ~50 m/s² | 5.10 g |
| Rocket launch (early stage) | ~15-30 m/s² | 1.5-3.0 g |
Acceleration Calculator FAQ
Everything you need to know about calculating acceleration from velocity and time.
Acceleration is calculated using the formula a = (v – u) / t, where v is final velocity, u is initial velocity, and t is the time taken for the change in velocity. The result is expressed in metres per second squared (m/s²).
Velocity measures how fast an object is moving and in what direction, expressed in units like metres per second. Acceleration measures how quickly that velocity is changing over time, expressed in metres per second squared, so it describes speeding up, slowing down, or changing direction.
Negative acceleration, often called deceleration, means an object’s velocity is decreasing over time, such as a car braking. It can also mean the object is accelerating in the opposite direction to its current motion, depending on the chosen reference direction.
Force and acceleration are linked by Newton’s second law, F = ma, where F is force in newtons, m is mass in kilograms, and a is acceleration in metres per second squared. For a fixed mass, a larger force produces a larger acceleration.