Speed, Distance & Time Calculator
Calculate speed, distance, or time from two known values. Uses the fundamental formula: distance = speed x time.
Examples
Distance: 60 km/h for 2.5 hours
d = 60 × 2.5 = 150 km
- Solve for
- Distance (d = speed x time)
- Speed
- 60 km/h
- Time
- 2.5 h
- Speed unit
- km/h
- Distance unit
- km
- Time unit
- h
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How It Works
Formula
Variables, symbols and units
- Distance
- Speed
- Time
Calculation method explained
Choose what to solve for: distance (from speed and time), speed (from distance and time), or time (from speed and distance). Enter the two known values and the calculator computes the third using d = s × t.
For motion at a constant (or average) speed the three quantities are linked by d = s·t. The calculator picks the rearranged form that matches your two knowns and outputs the missing one. The result inherits its units from the inputs — feeding km/h and hours yields kilometres; feeding m/s and seconds yields metres. Use the same time unit on both sides to avoid silent unit mistakes.
Examples
Distance: 60 km/h for 2.5 hoursDistance (d = speed x time) · 60 km/h → 150 km
d = 60 × 2.5 = 150 km
- Solve for
- Distance (d = speed x time)
- Speed
- 60 km/h
- Time
- 2.5 h
- Speed unit
- km/h
- Distance unit
- km
- Time unit
- h
- Distance
- 150 km
Speed: 100 m in 9.58 secondsSpeed (s = distance / time) · 100 m → 10.4384 m/s
s = 100 / 9.58 = 10.44 m/s
- Solve for
- Speed (s = distance / time)
- Distance
- 100 m
- Time
- 9.58 s
- Speed unit
- m/s
- Distance unit
- m
- Time unit
- s
- Speed
- 10.4384 m/s
Time: 300 km at 120 km/hTime (t = distance / speed) · 120 km/h → 2.5 h
t = 300 / 120 = 2.5 hours
- Solve for
- Time (t = distance / speed)
- Speed
- 120 km/h
- Distance
- 300 km
- Speed unit
- km/h
- Distance unit
- km
- Time unit
- h
- Time
- 2.5 h