About the Average Velocity Calculator
Average velocity from displacement and time, or from initial and final velocity.
Also known as: average velocity formula, displacement over time, mean velocity.
How to use this calculator
- Enter calculate from and the other fields.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Review the breakdown shown under the main result.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
v̄ = Δd / Δt = (vᵢ + v_f) / 2 for constant acceleration
Worked example
Using the values pre-filled in the calculator above:
- Calculate from: Displacement and time
- Displacement = 240 m
- Time = 30 s
the calculator returns:
- Average velocity: 8 m/s
- In km/h: 28.8
- In mph: 17.9