1RM

Deadlift Calculator

Enter your bodyweight and a recent deadlift set to estimate your deadlift one-rep max and see it as a multiple of your bodyweight.

Updated

Your deadlift

Unit

Whole number, 1–20. Most accurate from 1–10 reps.

Your deadlift results

Enter your details and select Calculate to see your results.

Estimated deadlift 1RM
—kg
Bodyweight ratio (estimated)
—× BW

Formula comparison

FormulaEstimated 1RM

Compare this with the deadlift strength standards for your bodyweight.

Results are estimates from prediction equations, not a tested max. They are most useful from sets of about 1–10 reps.

Estimated Deadlift Rep Maxes

Estimated deadlift weights for other rep counts, based on your estimated 1RM. These are estimates, not tested maxes.

Reps% of 1RMEst. weight

Calculate to see estimated deadlift weights for 1–12 reps.

What Is a Deadlift 1RM?

Your deadlift 1RM is the heaviest weight you can deadlift for one repetition with correct technique, from the floor to a full lockout. An estimated deadlift 1RM predicts that number from a set of several reps, while an actual 1RM is a single you have really pulled.

Lifters calculate it to follow progress, to choose working weights as a percentage of their max, and to gauge pulling strength without testing a maximal single. Dividing the estimate by bodyweight gives astrength-to-bodyweight ratio: 2.0 means an estimated 1RM twice your bodyweight. Ratios put lifters of different sizes on a common scale, but they don’t account for height, limb length or body composition, so treat them as a general reference.

  • Actual 1RM is a deadlift you have completed for one rep. Enter 1 rep and it is used as entered.
  • Estimated 1RM is a prediction from a multi-rep set, averaged across five formulas.
  • Bodyweight ratio shows the estimate as a multiple of your bodyweight, e.g. 2.0 × BW.

How the Deadlift Calculator Works

How deadlift 1RM is estimated

This calculator uses the same method as our One Rep Max Calculator — no separate deadlift formula. Your weight and reps go into five published formulas — Epley, Brzycki, Lander, Lombardi, Mayhew et al. — and the estimate shown is their average. Each formula’s result is listed so you can see how closely they agree. A single rep is treated as your actual 1RM.

Estimated deadlift 1RM = average of the five formula estimates

How bodyweight ratio is calculated

The estimated 1RM is divided by your bodyweight, using the same unit for both:

Bodyweight ratio = estimated deadlift 1RM ÷ bodyweight

Sources

  1. Epley, B. (1985). Poundage Chart. Boyd Epley Workout. Lincoln, NE: Body Enterprises.
  2. Brzycki, M. (1993). Strength testing — predicting a one-rep max from reps-to-fatigue. Journal of Physical Education, Recreation & Dance, 64(1), 88–90.
  3. Lander, J. (1985). Maximums based on reps. National Strength and Conditioning Association Journal, 6, 60–61.
  4. Lombardi, V. P. (1989). Beginning Weight Training. Dubuque, IA: W. C. Brown.
  5. Mayhew, J. L., Ball, T. E., Arnold, M. D., & Bowen, J. C. (1992). Relative muscular endurance performance as a predictor of bench press strength in college men and women. Journal of Applied Sport Science Research, 6(4), 200–206.

Example Calculation

Example only

An 85 kg lifter deadlifts 160 kg for 4 reps. Illustrative figures, not a real person’s result.

  1. Epley181.3 kg
  2. Brzycki174.5 kg
  3. Lander176.6 kg
  4. Lombardi183.8 kg
  5. Mayhew et al.186.4 kg
  6. Estimated 1RMAverage of the five = 180.5 kg
  7. Bodyweight ratio180.5 ÷ 85 = 2.12 × BW

Limitations

  • Estimates, not tests. The formulas predict a max from submaximal effort; accuracy is not guaranteed and your actual 1RM may be higher or lower.
  • Rep range matters. Estimates are most useful from about 1–10 reps; above that the formulas spread further apart.
  • Grip can limit reps. If your grip gives out before your legs and back, the set — and the estimate — understates your pulling strength.
  • Style and equipment. Conventional, sumo and trap-bar deadlifts, straps and belts all change how much you can lift.
  • Ratios simplify. Bodyweight ratio doesn’t capture height, limb length or body composition.

Compare Your Deadlift Strength

Your estimated 1RM and bodyweight ratio show how much you can pull. To see how that compares with reference levels from Beginner to Elite, use the site’s Strength Standards. They list deadlift values by bodyweight and gender in kilograms or pounds.

Deadlift standards are usually the highest of the main lifts, so compare your deadlift with deadlift values rather than across exercises. Standards are reference points, not a verdict on your overall ability. For a level based on a set you enter, try the Strength Level Calculator.

Reference

Deadlift Strength Standards

Reference levels by bodyweight and gender, shown as weights and bodyweight multiples.

View deadlift standards

Estimate your other main lifts with the Squat Calculator and Bench Press Calculator. If you rate sets by effort, the RPE Calculator estimates a 1RM from reps and RPE.

Frequently asked questions

What is a deadlift 1RM?

Your deadlift 1RM (one-rep max) is the heaviest weight you can deadlift for a single repetition with correct technique, from the floor to a standing lockout. It is a common measure of maximal pulling strength.

How is my deadlift 1RM estimated?

The calculator applies five published 1RM formulas — Epley, Brzycki, Lander, Lombardi and Mayhew et al. — to the weight and reps you enter, and shows their average. It is the same method as our One Rep Max Calculator, so both give the same answer for the same set.

What is the difference between estimated and actual deadlift 1RM?

An actual 1RM is a weight you have deadlifted for one rep. An estimated 1RM is a prediction from a set of several reps. If you enter a single rep, the calculator uses that weight as your actual 1RM instead of estimating.

How accurate is an estimated deadlift 1RM?

It is an approximation, not a guaranteed figure. Estimates tend to be most useful from a hard set of about 1–10 reps. Grip, technique breakdown late in a set and fatigue can all move the estimate away from what you would actually lift.

What does my deadlift bodyweight ratio mean?

It is your estimated deadlift 1RM divided by your bodyweight. A ratio of 2.0 means an estimated 1RM twice your bodyweight. The ratio makes it easier to compare lifters of different sizes, or to track strength as your bodyweight changes.

Can I use this for sumo or trap-bar deadlifts?

You can enter any deadlift variation, but the estimate only describes that variation. Sumo, conventional and trap-bar deadlifts often allow different weights, so compare like with like and use the same style each time.

How do I compare my deadlift with strength standards?

Look up your bodyweight and gender in the deadlift strength standards, or enter your set in the Strength Level Calculator to see which reference level it falls into.

Do I need to test my deadlift 1RM?

No. An estimate from a recent set is enough for most training purposes. If you do attempt a max deadlift, only attempt weights you can control with good technique.

Strength

Strength Level Calculator

Compare a lift with strength standards for your bodyweight, sex and age, from beginner to elite.

1RM

1RM Calculator

Estimate your one-rep max from the weight and reps of any set, with a percentage chart for training.

1RM

Squat Calculator

Estimate your squat one-rep max from a submaximal set and see training weights at common percentages.

1RM

Bench Press Calculator

Estimate your bench press one-rep max and see how it compares with bench press strength standards.

Training

RPE Calculator

Turn a set’s weight, reps and RPE into an estimated one-rep max and working weights for other sets.

View All Strength Calculators