Swim pace calculator (per 100 m)
Calculate your swim pace per 100 meters, speed and pace per 50 m, from distance and time.
Pace per 100 m is the main reference in swimming. Recreational swimmers are around 2:00–2:30 /100m.
How the calculation works
Pace per 100 m is total time ÷ (distance ÷ 100). E.g., 1000 m in 18 min (1080 s) → 1080 ÷ 10 = 108 s = 1:48 per 100 m. Speed is distance ÷ time.
Examples
- 1000 m in 18 min: 108 s per 100 m = 1:48/100m.
- 400 m in 8 min: 2:00 per 100 m.
Frequently asked questions
What is a good swim pace?
It varies a lot. Beginners: ~2:30/100m; intermediate: ~2:00; trained swimmers: under 1:30.
Why is swim pace per 100 m?
Because pools and races are multiples of 50/100 m — "per 100 m" is the universal standard.
How to improve pace?
Technique (fewer strokes per lap) usually beats just swimming harder. Work efficiency before power.
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Updated on June 30, 2026 · by Rafael Rossi · Methodology & sources