TSS calculator

Estimate Training Stress Score for a single session. Use Power, HR, Pace or RPE — whichever data you have.

Método RPE (Foster) Frecuencia cardíaca Ritmo Potencia Duración (min)

RPE (1-10)

LTHR (lpm) FC promedio (lpm)

Umbral (MM:SS/km) Ritmo promedio (MM:SS/km)

FTP (watts) Watts promedio

Calcular TSS

TSS combines duration and intensity into one number. 100 TSS = 1 hour at threshold. Sum your weekly TSS → weekly load. Connect Strava to have it auto-calculated on every activity.