Running pace calculator

Running pace is simply how long it takes to cover a unit of distance. This free calculator converts a workout or race time plus distance into minutes per kilometer and per mile—and can reverse the math to estimate finish time from a target pace. No VO2max models and no race-prediction tables.

Time → pace

Enter distance in kilometers or miles and a clock time as h:mm:ss, mm:ss, or plain minutes. We divide total seconds by distance to get seconds per km and per mile, then format them as familiar pace strings (for example 5:00 /km).

Example: 10 km in 50:00 is 5:00 per kilometer and about 8:03 per mile. Use the dual display when you train metric but race on a US course (or the reverse).

Pace → finish time

Switch to reverse mode, enter distance, and type pace as decimal minutes per selected unit (5.0 means five minutes flat). Finish time is pace × distance. Handy for “what if I hold 5:30/km for a half?” sketches without claiming you will hit that split on race day.

What we intentionally skip

We do not estimate VO2max, age-graded scores, or marathon predictors from short time trials. Those models need assumptions this page refuses to invent. Keep training decisions with a coach or a plan; keep this tool for clean arithmetic.

For session energy cost, open the calories burned calculator. For walking volume, try steps to calories. For easy/hard day intensity cues, the target heart rate zones page is a better fit than pace alone.

Practical tips

Warm-up jogs inflate “average pace” if GPS includes them—segment the hard portion when comparing workouts. Treadmill pace is belt speed; outdoor pace includes hills and turns. Consistency of measurement beats chasing a single number.

Educational training aid only—not medical advice. Free on FreeNutri with related fitness tools linked below.