Acceleration Calculator - Find Acceleration, Velocity & Distance
Calculate acceleration from velocities and time, or find final velocity and distance using kinematic equations. Free online acceleration calculator.
How is Acceleration Calculated?
Acceleration is the rate of change of velocity over time. It is calculated by subtracting the initial velocity from the final velocity and dividing by the time taken. This tool also supports the reverse calculations — finding the final velocity or the distance traveled given acceleration and time.
Example
A car accelerates from 10 m/s to 30 m/s in 5 seconds. Using a = (v − u) / t, we get a = (30 − 10) / 5 = 4 m/s². If you wanted the final velocity from rest at 4 m/s² for 5 seconds, v = 0 + 4 × 5 = 20 m/s.
Common Use Cases
- Physics homework — computing acceleration, velocity, or displacement for kinematics problems.
- Vehicle performance — estimating how quickly a car can reach a target speed.
- Engineering — determining acceleration forces in mechanical or structural design.
FAQs
What units does this calculator support?
You can toggle between m/s and km/h for velocity inputs. Distance is always shown in meters and acceleration in m/s² (or the equivalent in your chosen velocity unit per second).
Can I calculate distance from just velocity and time?
Yes — switch to "Distance" mode and enter the initial velocity, acceleration, and time. The tool uses s = ut + 0.5at² to compute the distance traveled.
What if acceleration is negative?
A negative acceleration simply means deceleration — the object is slowing down. Enter a negative value for the initial or final velocity as needed and the formula handles the sign automatically.