Swimming Pace Calculator
A free, browser-based calculator. Runs entirely in your browser — no sign up, nothing stored.
100% FreeRuns in your browserBasic
Enter details
Distance(m)
Time
::
Result
Fill in the fields to see your result.
Estimate only — real results depend on terrain, weather, fatigue, conditions and individual fitness. Not medical or coaching advice.
How to use this calculator
- Enter the distance you swam (in metres).
- Enter the time as hours : minutes : seconds.
- Read your pace per 100 m, per 50 m and speed.
How it works
Pace per 100 m = total time ÷ (distance ÷ 100). Pace per 50 m is half that; speed (m/s) = distance ÷ time.
Worked example
1500 m swim. 1500 m in 30:00 = 2:00 /100 m.
Tips
- Times are estimates only — not medical or coaching advice. Always train safely and follow event rules.
- Distances are editable: choose “Custom…” to enter your own course lengths.
Frequently asked questions
Does pool length matter?
Not for pace — it's based on total distance and time. Use the Pool Lap tools if you need lap counts.
Related tools
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.