Your overhead press set
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Estimating your max overhead press
Your one-rep max overhead press is the most you can press overhead for a single rep. A true max press is a grind with no spotter to help, so most lifters estimate it from a set they've already done. A hard set of 1 to 5 reps gives the most reliable estimate — the more reps, the more the estimate drifts.
Why six formulas
There's no single perfect 1RM formula, so this calculator runs six (Epley, Brzycki, Lombardi, O'Conner, Mayhew, Lander) and shows the average plus the spread. A tight spread means the formulas agree; a wide one means treat the number with caution.
The rep-max table
Below the estimate you get a full table — your 3-rep, 5-rep and 8-rep press and so on, as weights and percentages — the fastest way to pick working weights for your next pressing session.