Speed Distance Time Calculator
Select what you want to solve for, enter the two known values, and instantly convert across various measurement units.
Calculated Speed
0.00 km/h
Formula: Speed = Distance / Time
Equivalent Unit
0.00 mph
Equivalent Conversions Across Units
Understanding the Speed, Distance & Time Formulas
The relationship between speed, distance, and time is one of the fundamental concepts in kinematics and travel planning. The standard physical formulas are:
Speed (s)
s = d / t
Distance (d)
d = s × t
Time (t)
t = d / s
Common Unit Conversions
- 1 km/h = 0.621371 mph = 0.277778 m/s = 0.539957 knots
- 1 mph = 1.60934 km/h = 0.44704 m/s = 0.868976 knots
- 1 Knot = 1.852 km/h = 1.15078 mph = 0.514444 m/s