Swim interval & send-off calculator

Calculate swim send-offs, actual rest and total set time from pace or CSS. Plan repeat start times in metres or yards with optional five-second rounding.

Results

Enter your values or try the example.

How it works

Enter the number of repeats, distance per repeat, pace per 100 and planned rest. Swim time is distance × pace ÷ 100. The send-off is swim time plus rest, optionally rounded up to the next five seconds. Total time is repeats × swim time + (repeats − 1) × actual rest. Metres and yards use the same arithmetic: enter the pace in your selected unit. CSS mode also shows send-offs at the existing training-zone boundaries. Displayed timing is calculated to hundredths.