Analytical tool

1RM calculator

Estimate your one rep max from any set, then derive a full training-percentage table.

Your lift

Enter any set you’ve completed recently.

Exercise (optional)

Weight lifted

Load used for the set.

Reps completed

Between 1 and 30.

Unit

KG LBS

Enter a weight and rep count to see your estimated maximum and percentage breakdown.

Estimated 1 rep max

Epley · 1RM = weight × (1 + reps ÷ 30)

% of 1RM → load → reps

Training percentages derived from your estimated one rep max
Percentage	Weight	Estimated reps