Swim Pace Calculator
Work out your swimming pace per 100 metres and predict finish times for standard pool distances. Whether you swim laps for fitness or compete in open water events, this calculator helps you track improvement and plan race splits.
Enter your details
Your Swim Pace
ExampleExample figures, not your own. Worked for 200 m in 3 minutes 30 seconds. Enter your own details and press Calculate.
Pace per 100m
1:45/100m
Speed
57.1m/min
Distance Predictions
How It Works
Your swim pace per 100m is calculated by dividing your total time by the number of 100m segments: pace = total time / (distance / 100). Predictions for longer distances apply a fatigue factor similar to running, recognising that pace slows slightly as distance increases.
How to use it
- 1Enter the distance you swam in metres
- 2Enter your total swim time in minutes and seconds
- 3Click "Calculate" to see your pace per 100m
- 4View predicted times for 200m, 400m, 800m, and 1500m
Quick Reference
| Pace per 100m | 200m Time | 400m Time | 800m Time | 1500m Time |
|---|---|---|---|---|
| 1:15 | 2:33 | 5:12 | 10:38 | 20:22 |
| 1:30 | 3:03 | 6:12 | 12:41 | 24:18 |
| 1:45 | 3:33 | 7:13 | 14:45 | 28:14 |
| 2:00 | 4:04 | 8:14 | 16:49 | 32:11 |
| 2:15 | 4:34 | 9:15 | 18:53 | 36:07 |
| 2:30 | 5:04 | 10:16 | 20:57 | 40:04 |
| 2:45 | 5:34 | 11:16 | 23:01 | 44:00 |
| 3:00 | 6:05 | 12:17 | 25:04 | 47:57 |
Times estimated with a swim-specific fatigue factor of 1.05. Actual times vary by stroke, fitness, and technique.
Swim Pace Calculation
- Total Time
- = Your swim time in seconds
- Distance
- = Distance swum in metres
- Pace per 100m
- = Time to swim each 100 metre segment
Predictions for longer distances apply a fatigue exponent of 1.05, slightly less than running (1.06) due to the lower-impact nature of swimming. Results are most accurate for freestyle.