Why Estimate Your Overhead Press Max?
The strict overhead press, also called the military press, is one of
the purest tests of upper-body pressing strength — but it's also one
of the slowest lifts to progress. Because it relies heavily on the
anterior deltoids and triceps rather than the larger pectoral muscles
used in the bench press, most lifters find their overhead press 1RM
sits at roughly 60% to 65% of their bench press max. Comparing the two
numbers directly isn't a fair benchmark — they train different
leverage and muscle patterns.
Testing a true one-rep max overhead is also riskier than most lifts:
lifters who struggle to lock out a heavy single often lean back
excessively to finish the rep, placing unwanted shear stress on the
lower back. Estimating your max from a heavy 3-to-5 rep set avoids
this risk entirely while giving an equally useful number for
programming.
How to Use This Calculator
Enter the heaviest weight you strict-pressed for a clean set, along
with the reps completed. This calculator defaults to the Brzycki
formula since it's the most conservative option for overhead
pressing, but you can switch formulas or units freely. For the
safest, most reliable estimate, use a set of 3 to 6 reps.
Strict Press vs. Push Press: Does Leg Drive Count?
No — if you bend your knees and use leg drive to help initiate the
bar's upward path, the lift becomes a push press, not a strict
overhead press. A true strict press (or military press) requires your
knees, hips, and core to stay locked and completely static from start
to finish. Only enter weight from a genuinely strict, leg-drive-free
set for an accurate 1RM estimate — push press numbers will
significantly overestimate your true strict press strength.
Frequently Asked Questions
Why is my overhead press max so much lower than my bench press?
Smaller muscle groups and worse leverage mean overhead press 1RM is typically about 60-65% of bench press 1RM — this is normal, not a weakness.
Should I test a true 1-rep max for the overhead press?
It's risky — lifters often lean back excessively on a heavy single, stressing the lower back. An estimate from a 3-5 rep set is safer and just as useful.
Which formula is most accurate for the overhead press?
Brzycki is recommended since it's more conservative for fast-fatiguing upper-body pressing movements.
Does leg drive count in a strict overhead press max?
No — using leg drive makes it a push press. A strict press requires locked, static knees and hips throughout.
Does this work the same for men and women?
Yes, these are general-population formulas used for both men and women, though minor accuracy differences can appear at higher rep ranges.