Swim Pace Calculator

It is how long it takes you to cover 100 metres at your average effort, shown as minutes and seconds. Swimmers use it as a common yardstick so a 400 m and a 1500 m swim can be compared on the same scale.

The tool divides your total time in seconds by the distance, then multiplies by 100. So 1500 m in 1800 seconds is 1800 / 1500 x 100 = 120 seconds, which it formats as 2:00 per 100 m.

It varies widely. Many fitness swimmers hold around 2:00 per 100 m, while trained competitors go well under 1:30. The most useful comparison is against your own previous swims rather than a fixed target.

It works in metres and reports pace per 100 metres. If you swam in a yard pool you can still enter the yard count in the distance field, but remember the pace will then be per 100 yards, not metres.

It is the distance divided by your total time in seconds, rounded to three decimals. Speed and pace describe the same swim: a higher speed means a lower, faster pace number.

Multiply your pace per 100 m by the number of hundreds in the set. A 2:00 pace over 400 m predicts an 8:00 swim, which helps you plan interval training.

No. The calculator only needs total distance and total time, so it does not care whether you swam in a 25 m or 50 m pool. Just enter the full distance you covered.

The minutes-and-seconds pace is rounded to the nearest whole second for a clean display, while the underlying pace and speed are kept to finer precision. Seconds entered above 59 should be rolled into minutes.

Yes. Enter the distance and elapsed time for any pool or open-water swim and you get the same pace per 100 metres. Everything is computed in your browser, so nothing is uploaded.