Squat from Deadlift Estimator

About this calculator

The squat-to-deadlift ratio is a rough rule of thumb powerlifters use to sanity-check their numbers against each other: for most lifters, a one-rep-max back squat lands somewhere around 80 to 90 percent of their deadlift 1RM, since the deadlift typically allows a heavier load thanks to a shorter range of motion and less reliance on stabilizing the bar overhead of the spine.

Coaches use this kind of ratio to flag an imbalance worth training around — a lifter whose squat is unusually far below this range relative to their deadlift often has a quad or bracing weakness holding the squat back, while a squat close to or above the deadlift can signal a posterior-chain or grip weakness limiting the pull. Powerlifting federations and strength-standard charts (like those built from Wilks or DOTS-adjusted competition data) reference similar ratios when estimating an athlete’s likely total from a single known lift.

Enter your deadlift 1RM and this calculator applies the typical ratio to estimate a plausible squat 1RM — a starting point for programming, not a substitute for actually testing your squat.