Estimate your deadlift 1RM from a completed set, compare formulas, and generate practical percentage-based training loads.
Unit
Formula
For better estimates, use sets with strong technique and lower reps where practical.
Use Calculate to generate an estimated deadlift 1RM and training weights.
Formulas
Epley, Brzycki, Lombardi, O'Conner
Rep range
1 to 15 reps
Output
Estimated max + percentage table
Export
Clipboard and CSV
Quick explanation
Use estimates as a programming anchor, not as a guaranteed max.
Your one-rep max is the heaviest load you can lift once with sound technique. Estimation formulas use a submaximal set to approximate that value so you can plan training without always max testing. [2][1][5]
Formula comparison
Different models interpret rep fatigue differently, so compare outputs before choosing loads.
Balanced default for most deadlift planning when sets stay relatively low-rep.
Often yields a slightly lower estimate at higher reps and can be useful when you want conservative loading.
Exponent-based model that can differ more as reps increase; useful to compare sensitivity across formulas.
Simple linear adjustment model. Helpful as a second opinion when cross-checking your working max.
How to use
Generate a usable deadlift estimate in under a minute.
Input the load you lifted and how many strict reps you completed.
Choose your preferred formula and round to a practical plate increment.
Apply the estimated max to build deadlift working sets for upcoming sessions.
FAQ
Practical answers for programming and progress tracking.
Related tools
Bridge max estimation with session structure and technique checks.
Live tool
Use your estimated max to generate practical ascending, descending, or full pyramid sessions.
Live tool
Pair load planning with side-view form feedback for cleaner technique under fatigue.
Live tool
Convert your estimated loading choices into session tonnage and intensity context.
Live tool
Use RPE-adjusted effort context to estimate deadlift rep maxes and working 1RM range.
Live tool
Compare your estimated strength with ratio categories and set your next milestone target.
Live tool
Plan warm-up sets with plate loading to ramp efficiently into your working weight.
Live tool
Compare previous and current lifts to detect multiple types of personal records.
Article
Review unilateral hinge context to pair accessory work with your primary max-strength plan.
Sources
References used for estimation guidance and copy claims.
[1] The Accuracy of Prediction Equations for Estimating 1-RM Performance
LeSuer DA, et al. Journal of Strength and Conditioning Research. 1997.
Direct comparison of common rep-based prediction equations including deadlift testing.
[2] ACSM Position Stand: Progression Models in Resistance Training for Healthy Adults
American College of Sports Medicine. Medicine & Science in Sports & Exercise. 2009.
Supports practical use of rep ranges and loading progression for resistance training.
[3] Progressive Overload Without Progressing Load?
Plotkin DL, et al. PeerJ. 2022.
Supports that progression can come from rep and load changes across training cycles.
[4] Resistance Exercise for Health and Fitness
Kraemer WJ, Ratamess NA. Medicine & Science in Sports & Exercise. 2002.
General resistance training context for submaximal loading and progression decisions.
[5] Prediction of 1 Repetition Maximum in High-School Power Lifters
Kravitz L, et al. Journal of Strength and Conditioning Research. 2003.
Deadlift-inclusive prediction work using submaximal sets in powerlifting populations.
[6] Validity and Reliability of the Load-Velocity Relationship to Predict the 1RM in Deadlift
Ruf L, Chery C, Taylor KL. Journal of Strength and Conditioning Research. 2018.
Supports that non-max deadlift 1RM estimation methods can be valid when protocol quality is high.