Pace, Speed & Time Calculator
Enter any two of distance, time, pace or speed and instantly solve for the rest, in km or miles.
Distance unit
km
min
min/km
km/h
That is 5:00 min:sec per km
- 1
Time (min)
50 - 2
Distance (km)
10 - 3
Speed = distance × 60 ÷ time
10 × 60 ÷ 50 = 12 - 4
Pace = time ÷ distance
50 ÷ 10 = 5
How does this calculator work?
Enter any two of distance, time, pace or speed and this calculator solves the rest using speed = distance / time and pace = time / distance. It converts freely between km and miles (1 mi = 1.60934 km) so you can plan runs, rides or walks and compare min/km with min/mi at a glance.
Formula
How this is calculated
Distance (d), time (t), pace (p) and speed (v) are linked by two simple relationships: pace is the time spent per unit of distance (p = t / d), while speed is distance covered per unit of time (v = d / t). Pace and speed are reciprocals of each other once scaled, so v = 60 / p when pace is in minutes per unit and speed in units per hour. You only need any two of the four quantities; the calculator propagates the known values to fill in the missing ones — for example time = distance × pace, or distance = time × speed / 60.
Time is entered in minutes, pace in minutes per kilometer or per mile, and speed in km/h or mph, all matching the chosen distance unit. Unit conversion uses the exact factor 1 mile = 1.60934 km, so a pace in min/km is multiplied by 1.60934 to get min/mi (a mile takes longer than a kilometer), while a km/h speed is divided by the same factor to get mph.
The inputs must be physically consistent and positive: distance and time greater than zero, no division by zero. If you supply only pace and speed (which carry no length information) the problem is under-determined and no distance or time can be found. The chart plots distance against time as a straight line whose slope equals your speed, with a marker at your finishing point.
Frequently asked questions
If pace is in minutes per kilometer, speed in km/h equals 60 divided by the pace. For example, a 5 min/km pace is 60 / 5 = 12 km/h. The same rule applies for min/mi and mph.
A mile is longer than a kilometer (1 mi = 1.60934 km), so it takes more minutes to cover one mile than one kilometer at the same effort. Multiply min/km by 1.60934 to get min/mi.
Any two that include a length or time, such as distance and time, distance and pace, or time and speed. Entering only pace and speed cannot fix an actual distance or time.
Also known as
TG we-Calculate Editorial Team. (2026). Pace, Speed & Time Calculator [Online calculator]. TG we-Calculate. https://we-calculate.com/calculator/pace-and-speed-calculator
TG we-Calculate Editorial Team. "Pace, Speed & Time Calculator." TG we-Calculate. 2026. https://we-calculate.com/calculator/pace-and-speed-calculator.
TG we-Calculate Editorial Team, "Pace, Speed & Time Calculator," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/calculator/pace-and-speed-calculator
@misc{wecalculate_pace_and_speed_calculator, title = {Pace, Speed & Time Calculator}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/calculator/pace-and-speed-calculator}}, year = {2026}, note = {TG we-Calculate} }
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