FREE · SPORTS & TRAINING
Swim Pace Calculator.
Calculate swim pace per 100 m or 100 yd from distance and time, and your critical swim speed (CSS) with training paces.
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How to use Swim Pace Calculator
Choose pace or CSS. For pace, enter the distance, unit and time. For CSS, enter your 400 m and 200 m test times.
How it works
Pace = time ÷ distance × 100. CSS = (400 − 200) ÷ (T₄₀₀ − T₂₀₀).
Example
1,500 m in 28:45 is 1:55.0 per 100 m; a 6:40 400 m and 3:10 200 m give a CSS of 1:45.0 per 100 m.
Questions about Swim Pace Calculator
Is Swim Pace Calculator free, and do I need an account?
Yes. This tool is free to use in your browser without an account. Processing takes place on your device.
What are the limits and what should I check?
Pool length and turns affect comparisons between yards and metres. Everything is calculated in your browser; nothing you type is uploaded. Review the result before using it in your work.
Is my input sent to a server?
Your input is processed in your browser and is not uploaded by this tool. Files and pasted text are cleared when the page is refreshed. Normal website requests are still required to load the page and its libraries. Read the privacy explanation.