One rep max calculator
Know the number your programming is built on.
Enter any working set and Adaptiv estimates your one-rep max (1RM) using the same rep-range estimator it applies session to session — then turns it into a full percentage-based loading table. The figure is only as good as the set behind it, so we tell you how reliable it is.
- Five validated formulas
- Percentage loading table
- Honest accuracy rating
Your estimate will appear here.
Enter a weight, set the reps you performed, then press Estimate 1RM.
Your 1RM is the anchor.
Adaptiv builds the block around it.
The estimate is where programming starts. Adaptiv structures your loading, progression and deloads around it — and recalibrates as the numbers move, so the percentages always reflect your current strength.
- Percentage-based loading
- Automatic deload scheduling
- Block periodisation
- A coaching note on every session