Swim Time from Pace Calculator

How it is calculated

Enter your pace per 100 m as minutes and seconds, and the distance in metres. The tool turns the pace into seconds, pace = minutes × 60 + seconds, then computes time = pace × distance ÷ 100. The total is rounded to the nearest whole second first and then split into hours, minutes and seconds. Minutes and seconds are always shown with two digits (01:30), and an hours part appears only when the total is an hour or more (for example 1:19:10). The seconds box is not limited to 59, so 0 min 90 s counts as 1:30. The pace must be above zero, the distance must be above zero, and negative values or empty boxes give no result. The tool assumes a constant pace for the whole distance, with no allowance for turns, fatigue or open-water conditions, and only the total time is shown, not the splits.

Common mistakes

• Entering the pace per 50 m or per 25 m. The box is per 100 m, so a 50 m split of 0:52 must be doubled to 1:44 before you type it in.
• Typing the whole pace in the seconds box as 105 while leaving 1 in the minutes box. Seconds may exceed 59, so the tool accepts it, but the pace becomes 2:45 per 100 m.
• Typing the distance in kilometres or yards. The distance must be in metres, so 1.5 km is 1500; entering 1.5 returns 00:02 instead of an error.
• Expecting the result to include rest, turns or an open-water slowdown. It is simply pace times distance, so real races usually come out slower.
• Reading 26:15 as hours and minutes. Without an hours part the format is minutes:seconds, and a time over an hour shows as 1:19:10.