Pool Lengths to Miles Calculator
Count your laps, enter the length of your pool, and see how far you swam. Pools are measured in yards or metres, and both work here.
- Free
- Works offline after your first visit
- Saves on this device
- No sign-up
- Updated
How it works
Multiply the number of lengths by the length of the pool to get the total distance. One length is one trip from one end of the pool to the other.
Most pools are 25 yards, 25 metres or 50 metres. If you swim there and back, count each trip as two lengths.
Worked example
40 lengths of a pool that is 25 yd long comes to 0.57 mi swum.
Questions
Does a length count as a lap?
In most swim workouts, yes. A length is one trip down the pool, so a lap and a length mean the same thing here.
What if my pool is a different size?
Enter any length you like. The calculator works for short and long pools, indoor or outdoor, in yards or metres.
Can I use this for open water?
Only if you know the distance. Open water has no fixed lengths, so count the distance you covered from a map or a watch and enter it as one length.
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