TSS (Training Stress Score)
Calculate TSS (Training Stress Score) instantly with the exact formula and a worked example.
TSS (Training Stress Score)
Workout durationmin
Normalized Power (NP)W
Functional Threshold Power (FTP)W
TSS
96
Intensity Factor (IF)
0.8
Recovery
By the next day
More about: TSS (Training Stress Score)
What it calculates
The “TSS (Training Stress Score)” calculator computes TSS from 3 parameters: workout duration (min), normalized power (np) (W), functional threshold power (ftp) (W).
A study aid and exam-prep helper.
Example calculation
With parameters Workout duration = 90 min, Normalized Power (NP) = 200 W, Functional Threshold Power (FTP) = 250 W the result is 96.
How to use
- Enter workout duration, normalized power (np) and functional threshold power (ftp) — each field above is adjustable with a slider.
- TSS 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 TSS (Training Stress Score) calculated?
The TSS (Training Stress Score) calculator computes TSS from workout duration, normalized power (np), functional threshold power (ftp). Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the TSS (Training Stress Score) 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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