Critical Swim Speed (CSS)
Calculate Critical Swim Speed (CSS) instantly with the exact formula and a worked example.
Critical Swim Speed (CSS)
400m time, s
200m time, s
CSS
1.0526m/s
More about: Critical Swim Speed (CSS)
What it calculates
The “Critical Swim Speed (CSS)” calculator computes CSS in m/s from 2 parameters: 400m time, s, 200m time, s.
A study aid and exam-prep helper.
Example calculation
With parameters 400m time, s = 360, 200m time, s = 170 the result is 1.05 m/s.
How to use
- Enter 400m time, s and 200m time, s — each field above is adjustable with a slider.
- CSS (m/s) is calculated automatically as you type.
- Check the worked example below to see the formula applied to real numbers.
- Copy the result or bookmark this calculator.
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FAQ
How is Critical Swim Speed (CSS) calculated?
The Critical Swim Speed (CSS) calculator computes CSS (in m/s) from 400m time, s, 200m time, s. Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the Critical Swim Speed (CSS) calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.
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