What this calculator does
Swim pace works out pace per 100 m/yd and average speed for a swim, from distance and time. Enter your own figures above and the answer updates as you type: nothing is fixed in the code, so the result reflects exactly the numbers you supply.
The formula this calculator evaluates is printed under the tool and explained below, so you can check the working by hand or reuse it in a spreadsheet.
The formula
FormulaPace per 100 = time / distance × 100; speed = distance / time
The inputs explained
| Field | What to enter |
|---|---|
| Distance swum (m) | A number, measured in m. Starts at 1500. |
| Time taken (min) | A number, measured in min. Starts at 25. |
Worked examples
Every figure in the tables below is produced by this page’s own calculator at build time, so the numbers and the tool always agree. Select any row to load that scenario.
How the answer changes with distance swum
Every other input is held at the calculator’s starting values while distance swum varies. Select any row to load that scenario into the calculator.