onerepcalculator
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Clean and Jerk One Rep Max Calculator

Estimate your one-rep max from a set you have completed. Then see helpful training percentages and a second formula for comparison.

✓ Pounds or kilograms✓ Instant estimates✓ No account
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YOUR LIFT

Calculate your one-rep max

Enter the weight you lifted and the number of clean reps you completed.

1RM
Weight unit
Exercise diagram of Clean and Jerk highlighting Full body, Traps, Legs with proper exercise form.

Primary muscles are highlighted in teal.

PRIMARY MUSCLES

How to perform the clean and jerk

Full bodyTrapsLegs
  1. Set up carefully and prioritize positions you can repeat consistently.
  2. Drive powerfully from the floor and move under the bar in a coordinated sequence.
  3. Catch or receive the weight in balance, then recover with control.

Muscles worked

Main focus: Legs and hips

Also involved: Shoulders, triceps, traps and trunk

Form tip

Receive the clean in balance, then drive the jerk overhead.

Common mistake

Losing the front rack or unstable overhead lockout.

Safety and setup

Practise each phase with a qualified coach.

Prioritize coached technique over maximum loading.

For this movement, repetitions, technique, distance or assisted/added load may be more useful than a predicted one-rep max.

This calculator uses the total external load you enter. For dumbbell exercises, use the weight per dumbbell and be consistent when comparing workouts. For machine exercises, keep the same machine and setup, because stacks and leverage differ.

A note about this exercise: A conventional weight-and-reps 1RM estimate is not a meaningful benchmark for every movement. Track completed reps, added load, assistance, distance or technique instead when appropriate.

Related exercises

UNDERSTAND YOUR RESULT

What is a one-rep max?

Your one-repetition maximum (1RM) is the greatest weight you can lift once with proper form for a particular exercise. You can estimate it without attempting a heavy single: enter the weight and reps from a challenging set.

Our default estimate uses the Epley formula. We also show the Brzycki estimate so you can see that there isn't one exact formula for every lifter. The estimates become less dependable as repetitions rise, especially if the set wasn't close to your actual limit.

How accurate is a 1RM calculator?

It's a useful starting point for planning, not a guarantee of what you can lift. Rep technique, training experience, fatigue, equipment, and proximity to failure all matter. Use a recent, consistent set, ideally around 3–6 hard repetitions, and never treat the result as a reason to attempt an unsafe maximum.

Read our calculation methodology →

Strength starts with a good baseline.

Calculate a reliable starting estimate and build your next workout from there.

Calculate your 1RM ↗