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1RM Percentage & 5/3/1 Calculator

Turn your one-rep max into working weights: a percentage table or a Wendler 5/3/1 cycle.

About the 1RM Percentage & 5/3/1 Calculator

Enter your one-rep max (1RM) and the plate increment you can load. Choose the percentage table to see weights from 50% to 100% with typical reps, or the 5/3/1 cycle to get every working set for four weeks from your training max.

Jim Wendler's 5/3/1 works from a training max of 85–90% of 1RM: 65/75/85% for fives, 70/80/90% for threes, 75/85/95% for 5/3/1, then a deload week. Weights are rounded to plates you can load.

The formula

Working weight = 1RM × training max % × set %, rounded to your smallest plate increment

Worked example

1RM 100 kg, training max 90%, rounding to 2.5 kg

  1. Training max: 90 kg
  2. Week 1: 57.5 × 5, 67.5 × 5, 77.5 × 5+
  3. Week 3: 67.5 × 5, 77.5 × 3, 85 × 1+

Things to keep in mind

  • Reps at each percentage are typical ranges; they vary by person and by lift.
  • Warm up before working sets; warm-up sets are not listed.

Questions people ask

Don't know your 1RM?

Use the one-rep max calculator to estimate it from a set of reps.

Why a training max below 1RM?

It leaves room to progress and keeps form solid.

What does 5+ mean?

At least 5 reps, then as many more good reps as you can manage on the last set.