Speed, Distance & Time Calculator
The speed-distance-time relationship is one of the most fundamental concepts in physics and everyday life. Whether you are calculating how long a road trip will take, determining the speed of a moving object, or figuring out the distance covered during a run, this calculator uses the core kinematic equation v = d/t to solve for whichever variable you need.
The formula v = d / t relates three quantities: speed (v), distance (d), and time (t). Rearranging this equation lets you solve for any one of the three when the other two are known:
- Speed: v = d / t
- Distance: d = v x t
- Time: t = d / v
This relationship assumes constant speed (no acceleration). For cases involving acceleration, see the projectile motion or force calculators. The default units are meters and seconds, giving speed in meters per second (m/s). To convert to km/h, multiply by 3.6; to convert to mph, multiply by 2.237.
Applications include travel time estimation, athletic performance analysis, engineering calculations, and any scenario where uniform motion is a reasonable assumption.