Speed / Distance / Time

Solve D = R × T — enter any two values to find the third

D = S × T → 120 Kilometers = 60 km/h × 2 Hours
Speed
60km/h
Distance
120Kilometers
Time
2Hours
STARTENDD = 120 KilometersS = 60 km/hT = 2 HoursD = S × T

About this calculator

The Speed Distance Time Calculator solves for any one of the three variables when you know the other two. Whether you're planning a road trip, analyzing an athletic performance, or working through a physics problem, just enter the values you have and choose what to solve for. Supports mph, km/h, m/s, knots, and more.

Common examples

  • Speed 60 mph × Time 2.5 h → Distance = 150 miles
  • Distance 400 km ÷ Speed 100 km/h → Time = 4 hours
  • Distance 100 m ÷ Time 9.58 s → Speed ≈ 10.44 m/s (world record sprint)
  • Speed 25 knots × Time 8 h → Distance = 200 nautical miles
  • Distance 26.2 miles ÷ Time 3 h 30 min → Speed ≈ 7.49 mph (marathon pace)