Free lifting calculators

Three small tools for the numbers lifters keep working out by hand. No sign-up, nothing stored.

1RM calculatorEstimate your one-rep max from any set, with a percentage chart for programming.Weight trend calculatorTurn noisy daily weigh-ins into a 7-day average and a real weekly rate of change.Plate calculatorFind the plates to load on each side of the bar for any target weight, in kg or lb.

Fortis · free while in beta

Calculators are the start.

Fortis logs your training and weight every day and does this math for you, on every lift and every week.

Create your free account