TSS Calculator
Calculate Training Stress Score for every ride — with a power meter or by estimating intensity.
Power-Based TSS
NP from Garmin, Wahoo or Strava
TSS Estimate (No Power Meter)
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TSS
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Intensity Factor
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Duration
0–50
50–100
100–150
150–300
300+
Recovery Guide
| TSS Range | Workout Type | Recovery Time |
|---|---|---|
| 0–50 | Easy ride | Minimal |
| 50–100 | Moderate training | 1 day |
| 100–150 | Hard training | 1–2 days |
| 150–250 | Very hard / race-like | 2–3 days |
| 250+ | Extreme load | 3–5 days |
Auto-Calculate TSS from Strava
WattWorks calculates TSS for every activity automatically — including CTL, ATL, TSB and eFTP history.
Start for free →Free · No subscription