By Zencalcy Editorial TeamLast reviewed About us
Average velocity is displacement divided by the time taken. Unlike speed, it carries a direction, so returning to the starting point gives an average velocity of zero even if the path was long.
Average velocity from displacement and time.
v = Δx / Δt
This is average velocity over the interval, not instantaneous velocity. For constant acceleration the average is the midpoint of the initial and final velocities.
| Symbol | Meaning |
|---|---|
| Δx | Displacement, in metres. |
| Δt | Time interval, in seconds. |
| v | Average velocity, in metres per second. |
The average velocity is 10 m/s, which is 36 km/h or about 22.37 mph. Direction follows the sign of the displacement.
Continue with the Magnitude of Acceleration Calculator, Arrow Speed Calculator, or the Ballistic Coefficient Calculator — or browse more kinematics tools and all physics calculators.
Speed is the magnitude of velocity and is always non-negative. Velocity also includes direction.
Results are computed from the standard equations of classical mechanics. Unit conversions use the SI definitions published by NIST. Air resistance is ignored unless the calculator names a drag model.
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Last reviewed: September 2026. See how we build and check every tool on the about page.
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Content updated: September 2026