Training load calculator
Relative effort load calculator
Enter your workout data below to calculate your training stress score (TSS) for this session.
Relative effort is a simplified method for estimating load when heart rate or power data is not available.
Estimated load = Duration (hours) × Relative effort² × 100
Relative effort ranges from 0.25 (very easy) to 1.50 (very hard).
Shape Calendar
Even your easy days should count.
Log strength, yoga, hikes or commutes with a quick effort estimate and watch your full weekly load come together.