Swimming pace and pool lengths
Compare pace per 100 metres or yards and track complete lengths and partial distance. Change the inputs to update the chart or diagram.
Your inputs
The editable example is illustrative. Enter your own dimensions, operating data, prices, and fees. Results update as you edit.
Calculations run in your browser. Inputs are not saved or sent to analytics.
How it works
- Pace per selected 100 units (h:mm:ss) = / × 100; Total pool traversals = /; Two-length laps (including fraction) = Total pool traversals/2
- Worked example: 1,000 m/20 min ⇒ 2 min/100 m; 1,000/25 = 40 Total pool traversals = 20 Two-length laps (including fraction)
- Supported input limits: : 1e-12 ≤ x ≤ 1,000,000,000,000; : n ≤ 14; : 1e-12 ≤ x ≤ 1,000,000,000,000; : 0 ≤ x ≤ 1,000,000,000,000
Input and formula key
Your result
Complete the inputs to see your result.
Assumptions and limitations
Pool length and target distance use the same unit as the swim distance. A length is one crossing; a lap is two. Target time assumes the same average pace, including whatever rest you included in the original duration.
Sources
- NIST — conversion factor conventions Sources reviewed: 2026-10-06
- NIST — conversion factor table B.8 Sources reviewed: 2026-10-06
