Choose what to solve
Calculate pace, finish time, or distance from the other two values.
Exact arithmetic, no performance guess
Turn a finish goal into a pace you can check.
PaceCalc connects distance, elapsed time, and steady pace with the exact international mile. Choose a standard race or enter a custom run, then inspect both unit systems and every cumulative split.
Free · No signup · Nothing saved
Any two values
From known numbers to one checkable result
Enter matching units
Use kilometres or miles and pace per kilometre or per mile without converting by hand.
Inspect every output
Read both paces, both speeds, the exact-distance finish, and cumulative even splits.
Useful before an ordinary run
Standard distances without hidden assumptions
- Convert a 5K or 10K finish goal into pace per kilometre and mile.
- Build an even cumulative split table for a half marathon or marathon.
- Check the distance covered from a measured time and steady pace.
Ready to calculate
Use the numbers you actually know
Choose the unknown value and let exact rational arithmetic handle the unit conversion.