At onerepmaxcalculator.online, we’re passionate about strength training, performance tracking, and practical tools that actually help lifters get better in the gym. This site was built by gym-goers, for gym-goers — whether you’re grinding through 5×5 programs, dialing in accessory work, or testing your limits under the bar.

We know how frustrating it can be to guess your numbers or second-guess your progress. That’s why we created a reliable, straightforward One Rep Max Calculator that works with all major formulas. You can select your lift, plug in your reps and weight, and see your estimated 1RM without the need to max out every week.

From beginners just learning about rep ranges to advanced lifters planning strength blocks, our tool is here to simplify the process. We support popular lifts like bench press, deadlifts, squats, overhead press, pull-ups, dips, and rows — with the ability to calculate using trusted formulas like Epley, Brzycki, Lombardi, O’Conner, Wathan, and more.

This platform is designed to be fast, free, and accurate. No clutter. No signup. No nonsense.

If you lift, you’ve already got enough to focus on. Let us help you with the numbers.

Got feedback or feature requests? We’re always improving. Reach out anytime at
[email protected]

Stay strong. Lift smart. Keep progressing.