Measure your Critical Swim Speed instantly with our free Critical Swim Speed Test – enter 200m & 400m times to get accurate CSS pace, training zones, and performance insights.
Please enter a valid distance (e.g., 200).
Enter time in MM:SS.ss format (e.g., 2:30.00).
Please enter a valid time (e.g., 2:30.00).
Please enter a valid distance (e.g., 400).
Enter time in MM:SS.ss format (e.g., 5:15.00).
Please enter a valid time (e.g., 5:15.00).
Please select a pool length.
| Parameter | Value |
|---|---|
| First Swim Distance | 200 meters |
| First Swim Time | 2:30.00 |
| Second Swim Distance | 400 meters |
| Second Swim Time | 5:15.00 |
| Pool Length | 25 Meters |
| Critical Swim Speed | 1.33 m/s |
| Pace per 100m | 1:15.19 |
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