Health & fitness
Back to all calculators
Health & fitness
Critical Swim Speed calculator
Estimate your CSS training pace per 100 metres or yards from 400 and 200 time trials.
Your result
Complete the fields and calculate.
Example
Critical Swim Speed calculator
Adjust the sample values to your situation and calculate.
FAQ
Frequently asked questions
How accurate is the result?+
The calculator uses the stated formula and only rounds the display. Accuracy depends on your inputs.
Is this calculator really free?+
Yes. Use it as often as you like without an account or registration.
Are my entries stored?+
The calculation runs directly in your browser. Calculator values are stored locally only when you explicitly add a result to “My results”. Favourites and history also remain locally on your device.