Calculadora de Aceleração
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
a = (v_f−v_i)/t
About this calculator
The Acceleration Calculator determines the average acceleration of an object from the change in its velocity over a time interval. It uses the formula a = (v_f − v_i) / t, where v_f is final velocity, v_i is initial velocity, and t is elapsed time. The result is expressed in meters per second squared (m/s²), indicating how many meters per second the velocity changes each second.
You can use this tool in practical situations such as calculating a car's acceleration during a start, a runner starting from rest, or an object in free fall (ignoring air resistance). Simply enter the known values in the corresponding fields and click calculate. The calculator also allows unit conversion between km/h and m/s for convenience.
Important precautions: ensure consistent units. If velocity is in km/h, convert to m/s by dividing by 3.6. The formula calculates average acceleration, not instantaneous. For motions with variable acceleration, the result is an approximation. Remember that negative acceleration indicates deceleration (braking).
Frequently asked questions
What if the velocities are in km/h?
Convert to m/s by dividing by 3.6. The calculator accepts both units, but make sure to use the same unit for both velocities.
Can acceleration be negative?
Yes, negative acceleration indicates deceleration, meaning the velocity decreases over time.
Does this calculator compute instantaneous acceleration?
No, it calculates average acceleration. For instantaneous acceleration, you would need to differentiate velocity with respect to time.
What does the result in m/s² mean?
It means that each second, the velocity changes by that many meters per second. For example, 5 m/s² means the velocity increases by 5 m/s every second.
Can I use it for motion with variable acceleration?
Yes, but the result will be the average acceleration over the given time interval, not the acceleration at each instant.