Speed Distance Time Calculator

How this speed distance time calculator works

Choose what to solve for — speed, distance, or time — then enter the other two values. The calculator uses the fundamental physics formula and handles unit conversions automatically.

The formula

distance = speed × time

speed = distance ÷ time

time = distance ÷ speed

Unit conversions used

• 1 mile = 1.60934 km = 1609.34 m = 5280 ft
• 1 km/h = 0.62137 mph = 0.27778 m/s
• 1 hour = 60 minutes = 3600 seconds