Overhead Press Max Calculator
Estimate your standing overhead press one-rep max.
Estimated OHP 1RM
Estimating your overhead press max
The standing barbell overhead press (OHP) is a smaller lift than the squat, bench, or deadlift, so small technical breakdowns — excess back lean, incomplete lockout — have an outsized effect on estimates. Keep your test set as strict as your working sets.
This uses the same formula average as the other lift calculators on this site: Epley, Brzycki, Lombardi, and O'Conner.
Where these numbers come from
The formulas and default values in this calculator are based on:
- Epley (1985), Brzycki (1993), Lombardi (1989), and O'Conner et al. (1989) 1RM prediction formulas
These are planning estimates for training purposes. Check with a coach, trainer, or physician before starting a new program or maxing out.
Frequently asked questions
Is push press the same as strict overhead press for this calculator?
No. Push press uses leg drive and will produce an inflated number relative to a strict press. Only enter strict-press sets if you want a strict-press max.
Why is my OHP max so much lower than my bench?
That's normal — the overhead press lacks the stability and leverage advantages of a bench, and most lifters press well under half of their bench max.
How many reps should I test with?
3 to 6 reps close to failure, same as the other lift calculators on this site.
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