01Tool — Strength

Find your working max.

Use a set you can actually control — not a grinder — to estimate a one-rep max. Then take the percentage table to the rack and train at a weight you can repeat.

Formulas: Epley + Brzycki
Rep range: 1–12
Table rounding: 5 lb / 2.5 kg

Estimated 1RM

Lift

Weight (lb)

Reps (1–12)

Squat estimated max

262.5lb

Epley262.5 lb

Brzycki253.1 lb

95%250 lb

90%235 lb

85%225 lb

80%210 lb

75%195 lb

70%185 lb

65%170 lb

60%160 lb

Estimates only — ask a coach before maxing out. Rep ranges above 12 are not reliable.

Train with a coach Load the bar

Put it to work

Get a coach on the floor.

A trainer can check your setup, your depth and your bar speed — the things a calculator cannot see.

Next tool

Load the bar.

Turn the estimate into an actual plate stack, per side, with a barbell drawing and a remainder warning.

Train here

Where the numbers get tested.

Racks, benches, iron and bumper plates, and coaches who will tell you the truth about the set.

Estimates only — ask a coach before maxing out.

Join online See open gym

Find your working max.

1RM calculator

Next steps

Get a coach on the floor.

Load the bar.

Where the numbers get tested.