Free Tool
Running Pace Calculator
Enter any two of pace, time, and distance and the calculator solves the third — shown in both min/km and min/mile. Use it to plan a goal race, check a training run, or find your target pace.
Pace
—
Per km
—
min/km
Per mile
—
min/mile
Enter your numbers to see the result. Everything updates as you type.
How the numbers are calculated
Pace, time, and distance are tied together by one exact identity: time = pace × distance. Rearranged, pace = time ÷ distance and distance = time ÷ pace. Given any two values, the third is a direct calculation — no estimation involved.
Distances and paces convert between metric and imperial using the exact factor 1 mile = 1.609344 km. When you solve for pace, both min/km and min/mile are shown so you can read whichever your watch displays.
This is arithmetic, not a model, so the figures are exact for the inputs you give. Real-world finish times still depend on terrain, weather, and fatigue — a steady calculated pace is a plan, not a promise.