Overview

Calculate any one of speed, distance, or time from the other two values using the fundamental relationship of uniform motion. Widely used from everyday travel estimation to physics experiments.

Formula

Speed = Distance ÷ Time  (v = d / t)
Distance = Speed × Time  (d = v × t)
Time = Distance ÷ Speed  (t = d / v)

Units: Speed (m/s, km/h, mph), Distance (m, km, mi), Time (s, h)

How to Use

1. 1Select the value you want to calculate (speed, distance, or time).
2. 2Enter the other two known values.
3. 3Choose the appropriate units (m/s, km/h, etc.).
4. 4Click calculate to get the result instantly.

Tips

• ✔To convert km/h to m/s, divide by 3.6.
• ✔Average speed equals total distance divided by total time.
• ✔For non-uniform motion, use the acceleration calculator alongside this tool.
• ✔The speed of light (~3×10⁸ m/s) and speed of sound (~343 m/s) are useful reference values.

FAQ