About this calculator

Bench PR Calculator helps you estimate your one-rep max based on a set you benched. You can also see which weights to load during training.

What it's here for

Most bench press calculators won't show a number until you press a button, scroll by a banner or move past a shop header. The answer shows up while you type. Every bit of the math is written out, so you can check it yourself.

What it does

• Using one set's weight and rep count, it estimates your bench PR. The estimate appears in lb or kg.
• That estimate is compared with six other published formulas, and you can see how far apart they are.
• At each step, the list shows the load from 100% of your max down to 50%.

What it does not do

It doesn't ask about your bodyweight, and it doesn't cover other lifts. It doesn't place you in a ranking with other lifters. Since your form isn't visible, an estimate is all you get. The calculator offers no guarantee about what you'll lift that day.

Advertising and money

Using the site costs you nothing. The site has no ads, sponsors, shop or accounts.

Contact

Do any of the numbers seem wrong, or do you have a question? Use contact@benchprcalculator.com to send your note.