Swimming Pace Calculator
Calculate swimming pace per 100m or 100 yards, lap splits, and finish time for pool and open water.
Covers freestyle, backstroke, breaststroke, and butterfly.
Swimming pace is measured in time per 100 meters or 100 yards — the standard unit used by coaches and competitive swimmers worldwide.
Pace formula: Pace (per 100m) = Total Time ÷ (Distance ÷ 100)
Or equivalently: Pace = (Total Time in seconds × 100) ÷ Distance in meters
Total time from pace: Total Time = Pace × (Distance ÷ 100)
Worked example: A swimmer completes 400m in 6 minutes 20 seconds (380 seconds). Pace = (380 × 100) ÷ 400 = 95 seconds per 100m = 1:35/100m
For a 1,500m open water swim at a 1:45/100m pace: Total Time = 105 × (1500 ÷ 100) = 105 × 15 = 1,575 seconds = 26 minutes 15 seconds
Stroke-by-stroke pace benchmarks (per 100m):
| Level | Freestyle | Breaststroke | Backstroke | Butterfly |
|---|---|---|---|---|
| Beginner | 2:30+ | 3:00+ | 2:45+ | 3:00+ |
| Intermediate | 1:45–2:30 | 2:15–3:00 | 2:00–2:45 | 2:15–3:00 |
| Competitive | 1:15–1:45 | 1:30–2:15 | 1:25–2:00 | 1:20–2:15 |
| Elite | Sub 1:00 | Sub 1:10 | Sub 1:05 | Sub 1:00 |
Pool lengths:
- Short course: 25m or 25 yards (most club pools)
- Long course: 50m (Olympic standard)
Pace in a short course pool will be slightly faster due to the added push-off momentum from more turns per distance. When comparing swimmers, always note which pool size was used.