Deadlift 1RM Calculator
Your deadlift one rep max from a set of reps, in lb or kg. Epley and Brzycki formulas, next to the general reps table from a 2024 meta-analysis of about 7,000 people.
Your estimated deadlift 1RM
361 lb
Average of the Epley and Brzycki formulas- Epley 368 lb
- Brzycki 354 lb
- 90% of 1RM 325 lb
- 75% of 1RM 271 lb
Worked example: 315 lb for 5 reps
- Epley = 315 × (1 + 5 / 30) = 367.5 lb
- Brzycki = 315 × 36 / (37 − 5) = 354.4 lb
- Estimated deadlift 1RM = (367.5 + 354.4) / 2 = 361 lb
In kilograms, 143 kg for 5 reps gives 166.8 and 160.9 kg, so an estimate of 164.0 kg.
Your Deadlift weights from 50 to 100%
From the 1RM in the calculator above, rounded to the nearest 1 lb or 0.5 kg. The reps column is what the Epley and Brzycki formulas predict at each percentage (formulas solved for reps).
| % of 1RM | Weight (lb) | Reps (Epley to Brzycki) |
|---|---|---|
| 100% | 361 | 1 |
| 95% | 343 | 1.6 to 2.8 |
| 90% | 325 | 3.3 to 4.6 |
| 85% | 307 | 5.3 to 6.4 |
| 80% | 289 | 7.5 to 8.2 |
| 75% | 271 | 10 to 10 |
| 70% | 253 | 12.9 to 11.8 |
| 65% | 235 | 16.2 to 13.6 |
| 60% | 217 | 20 to 15.4 |
| 55% | 199 | 24.5 to 17.2 |
| 50% | 180 | 30 to 19 |
Reps people actually do at 90, 80 and 70%
Formula predictions next to the averages measured in a 2024 meta-analysis of about 7,000 people (Nuzzo and colleagues). The paper gives separate figures for the bench press; for other lifts it gives a general model. Values marked "~" are the rounded figures stated in the paper's text; "n/s" means the paper does not state one.
| % of 1RM | Epley | Brzycki | Measured, general | Textbook table |
|---|---|---|---|---|
| 90% | 3.3 | 4.6 | ~5 | 4 |
| 80% | 7.5 | 8.2 | n/s | 8 |
| 70% | 12.9 | 11.8 | ~15 | 11 |
What changes versus the general 1RM calculator
- Defaults: 315 lb for 5 reps, a deadlift set, instead of 225 lb for 5 on the general 1RM calculator.
- Reps table: the measured column is the general model from Nuzzo and colleagues (2024). The deadlift was not one of the exercises they compared, so it is the best available average, not a deadlift-specific one.
- Heavier numbers, same rounding: loads round to the nearest 1 lb or 0.5 kg, as on the general calculator; round to the plates you own when you load the bar.
- Same formulas: the estimate is the same Epley and Brzycki average as the general calculator.
Frequently asked questions
How do I estimate my deadlift 1RM?
Pull a set close to failure, between 1 and 12 reps, with the same form you would use for a single, then enter the weight and reps. 315 lb for 5 reps gives an estimated deadlift 1RM of 361 lb.
Is there a reps table made for the deadlift?
Not in the sources this page uses. The 2024 meta-analysis by Nuzzo and colleagues compared the bench press, chest press, squat and leg press, and says its general table applies to exercises other than the bench press and leg press; it also says more data are needed for other exercises. This page uses that general table.
Should I enter conventional or sumo deadlift?
Either, but run the calculator once for each: they are different lifts and your max can differ between them. Enter the style you train and test.
Can I enter my deadlift in kilograms?
Yes. Switch to kg; the result is rounded to the nearest 0.5 kg. 143 kg for 5 reps gives about 164.0 kg.
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Medical disclaimer
This calculator gives an estimate, not medical advice. Equations predict the average of a group; your own needs can sit 10% or more above or below. It is built for healthy adults. If you are pregnant or breastfeeding, under 18, living with a medical condition such as diabetes, kidney disease or an eating disorder, or taking medication that affects appetite or weight, ask your doctor or a registered dietitian before acting on these numbers.
Sources
- Epley B. Poundage Chart. In: Boyd Epley Workout. Lincoln, NE: Body Enterprises; 1985. (read 2026-10-24)
- Brzycki M. Strength testing: predicting a one-rep max from reps-to-fatigue. J Phys Educ Recreat Dance. 1993;64(1):88-90. DOI: 10.1080/07303084.1993.10606684 (read 2026-10-24)
- Richens B, Cleather DJ. The relationship between the number of repetitions performed at given intensities is different in endurance and strength trained athletes. Biol Sport. 2014;31(2):157-161. DOI: 10.5604/20831862.1099047 (read 2026-10-24)
- Nuzzo JL, Pinto MD, Nosaka K, Steele J. Maximal number of repetitions at percentages of the one repetition maximum: a meta-regression and moderator analysis of sex, age, training status, and exercise. Sports Med. 2024;54(2):303-321. DOI: 10.1007/s40279-023-01937-7 (read 2026-10-24)