Swimming & Water Training

Swimming performance calculators for CSS pace, training zones, stroke rate, SWOLF, open water sighting, and triathlon transitions.

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Calculate your Critical Swim Speed from 400m and 200m time trials to determine your aerobic threshold pace for effective training.

Calculate five swim training zones from your Critical Swim Speed (CSS) pace. Structure workouts by intensity for optimal improvement.

Calculate how often to sight during open water swimming based on current drift, swim speed, and course width tolerance.

Calculate strokes per minute, distance per stroke, and stroke index from your pool length, time, and stroke count.

Calculate split times for any race distance based on your target pace per 100m, with negative split suggestions.

Estimate time savings from wetsuit buoyancy in open water swimming based on your pace, body weight, and wetsuit thickness.

Calculate swimming pool volume in gallons and liters from dimensions and shape for water treatment and chemical dosing.

Calculate your SWOLF score (swim golf) to measure stroke efficiency. Compare against benchmarks and see how reducing strokes improves your score.

Calculate target T1 (swim-to-bike) and T2 (bike-to-run) transition times based on your experience level and race distance.

Calculate calories burned swimming by stroke type, intensity, duration, and body weight using MET-based formulas.