Deadlift 1RM Calculator
Project your deadlift one rep max with validated formulas and a practical %1RM loading table — works for conventional, sumo and Romanian variants and is ideal for strength and peaking blocks.
Deadlift standards table
Reference profile based on common ExRx/Symmetric Strength ranges.| Level | Relative load |
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FAQ
How accurate is a deadlift 1RM calculator?
When you input a working set between 2 and 8 reps taken close to failure, the average estimate from these four formulas is typically within 5–8% of your real deadlift max. Above 8 reps, the deadlift accumulates so much fatigue that estimates become less reliable than for the squat or bench.
Can I compare conventional and sumo deadlift directly?
You can compare your own progression in either style, but absolute numbers do not transfer 1:1. Sumo typically shifts your max ±5–10% relative to conventional based on hip and torso leverages — track each variant separately if you train both.
Should I use straps or hook grip in the input?
Use whatever you trained with, and stay consistent across sessions. Straps usually let you express 5–10% more leg/back strength on the bar because grip stops being the limiter, so a strapped 1RM is not directly comparable to a competition-grip 1RM.
Why does RPE change my estimated 1RM?
RPE captures how close to failure your set was. RPE 8 means 2 reps in reserve, so the calculator estimates as if you had done 2 more reps. This is especially important for the deadlift, where most lifters stop several reps short of true failure to protect the lower back.
How often should I recalculate?
Every 4–8 weeks is enough. The deadlift is the most fatiguing of the big three lifts, so testing a true 1RM frequently can compromise your training. Recalculate from a top working set at the end of each block instead.
Why are my numbers different from my squat or bench 1RM ratios?
Deadlift is typically the strongest of the big three for most lifters because it involves more total muscle mass and shorter range of motion. Expect a deadlift 1RM around 120–130% of squat and 150–180% of bench, with significant individual variation depending on leverages.