Free Swim Pace Calculator — Splits, Converter & CSS Threshold | AquaPlan
Free swim pace calculator. Convert pace between 100 m and 100 yd, solve distance / time / pace, project race splits, and estimate your CSS threshold pace from a 200 m + 400 m test. No login required.
Free swim pace calculator with five tools in one: distance/time/pace solver, 100 m ↔ 100 yd pace converter, race-pace split table from 25 m to 1 mile, pool-length lap calculator, and CSS (Critical Swim Speed) threshold estimator from a 200 m + 400 m test. Works for triathletes, masters swimmers, and pool swimmers in metric or yard pools.
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