Swimming Pace & CSS Calculator

Swimming Pace & CSS Calculator MCP Connector for Claude

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Calculate precise swimming splits, pacing, and Critical Swim Speed (CSS).

3 tools Official Updated Oct 1, 2026 Official Vinkius Partner

A deterministic utility for swimmers to plan training sessions. Use calculate_pace_and_splits to determine required pace per 100 units, exact split times for every pool length, and total turn counts. Use calculate_css to estimate your aerobic threshold based on test times. The tool accounts for stroke-specific drag coefficients for freestyle, backstroke, breaststroke, and butterfly to ensure accurate pacing.

swimmingpacingtrainingcssathlete

3 tools expose this connector's capabilities to your AI agent.

calculate_css

calculate_pace_and_splits

validate_swimming_parameters

See how to talk to your AI agent using Swimming Pace & CSS Calculator.

Calculate the splits for a 400m freestyle swim in a 25m pool with a target time of 05:00.

For a 400m freestyle in a 25m pool with a 05:00 target, your pace per 100m is 01:15. You will perform 15 turns, and your splits are: 00:15, 00:30, 00:45, 01:00, 01:15, 01:30, 01:45, 02:00, 02:15, 02:30, 02:45, 03:00, 03:15, 03:30, 03:45, 04:00, 04:15, 04:30, 04:45, 05:00.

What is my CSS if my 3000m time was 45:00 and my 400m time was 06:00?

Your calculated Critical Swim Speed (CSS) pace is 01:30 per 100m.

Can I swim 100m in a 50m pool?

Yes, 100m is a multiple of 50m, so the distance and pool length are compatible.

You can use the `calculate_pace_and_splits` tool by providing the total distance, your target time, the stroke type, and the pool length.

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