Swimming pace calculator

Swim pace is quoted per 100 m or per 100 yards, and a 25 m pool gives faster splits than a 50 m one.

Pace per 100 m
1:52.0
= Exact Swimming pace
Pace per 100 yards
1:42.4
Pool lengths
60.0
Time per length
0:28.0
Speed
0.8929
Speed in km/h
3.214
Total time
0:28:00
Show the working
  1. Distance = 1500
  2. Time, minutes = 28
  3. Seconds = 0
  4. Pool length = 25
  5. Total time = 28*60 + 0 = 1680
  6. Pace per 100 m = 1500 > 0 ? 1680 / 1500 * 100 : 0 = 112
  7. Pace per 100 yards = 112 * 0.9144 = 102.413
  8. Speed = 1680 > 0 ? 1500 / 1680 : 0 = 0.892 857
  9. Pool lengths = 25 > 0 ? 1500 / 25 : 0 = 60
  10. Time per length = 60 > 0 ? 1680 / 60 : 0 = 28
  11. Speed in km/h = 0.892 857 * 3.6 = 3.214 29

Values are shown to six significant figures here; the arithmetic itself runs on exact fractions and is only rounded where a number is printed.

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    The formula

    • pace per 100 m = time / distance x 100
    • 100 yards = 91.44 m exactly

    Short-course times are faster than long-course because every turn gives a push-off. The difference is a couple of seconds per 100 m.

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