Estimate your one rep max from any hard set, then see the weight for every percentage.
Work out my 1RMFree Gym Calculators
Free calculators from NXTSTEP Fitness, built on the same maths as the app. No sign-up, works in kg or lb, and nothing to download.
1RM calculator
Plate calculator
See which plates go on each side of the bar for any weight, plus your warm-up sets.
Load my bar
Macro calculator
Daily calories and grams of protein, carbs and fat for a bulk, a cut or maintenance.
Get my macros
Free on iOS & Android
Every tool, plus the training to use them
NXTSTEP Fitness puts these calculators next to five full training programmes, set logging, PB alerts and progress charts. The plate calculator is one tap from every exercise.