Deadlift Estimate Calculator Formula

Understand the math behind the deadlift estimate calculator. Each variable explained with a worked example.

Use the Deadlift Estimate Calculator

Formulas Used

Estimated 1RM

estimated_1rm = round(est_max)

Heavy Triple (90%)

heavy_triple = round(est_max * 0.9 / 5) * 5

Working Set (75%)

working_set = round(est_max * 0.75 / 5) * 5

Volume Weight (65%)

volume_weight = round(est_max * 0.65 / 5) * 5

Variables

VariableDescriptionDefault
weightWeight Lifted(lbs)275
repsReps Completed5
est_maxDerived value= weight * (1 + reps / 30)calculated

How It Works

How Deadlift Max Is Estimated

Formula (Epley)

1RM = Weight x (1 + Reps / 30)

Deadlift Standards (Male)

  • Beginner: 1.0x bodyweight
  • Intermediate: 1.5x bodyweight
  • Advanced: 2.5x bodyweight
  • Elite: 3.0x bodyweight

    • The deadlift is typically the heaviest lift for most people and tests total posterior chain strength.

    Worked Example

    You deadlift 275 lbs for 5 reps.

    weight = 275reps = 5
    1. 011RM = 275 * (1 + 5/30) = 275 * 1.167 = 321 lbs
    2. 02Heavy triple = 321 * 0.9 = 289, rounded to 290 lbs
    3. 03Working set = 321 * 0.75 = 241, rounded to 240 lbs
    4. 04Volume weight = 321 * 0.65 = 209, rounded to 210 lbs

    Frequently Asked Questions

    Conventional or sumo deadlift?

    Both are valid. The formula applies equally. Most people pull about the same weight either way, though individual leverages favor one style.

    Why is my deadlift estimate less accurate?

    Deadlift rep estimates can be less accurate because fatigue accumulates differently (each rep starts from a dead stop) and grip can limit reps before muscles fail.

    How often should I deadlift?

    Most lifters do well with 1-2 deadlift sessions per week. Heavy deadlifts are very taxing on recovery, so quality over quantity is important.

    Ready to run the numbers?

    Open Deadlift Estimate Calculator