Free Tools

Tools for Serious Lifters

Free calculators built for the gym. No signup, no ads, no BS.

One Rep Max Calculator

Enter weight and reps to estimate your 1RM. Epley and Brzycki formulas. Full training zone table.

Compare your strength across bodyweight classes. Enter your total and bodyweight to get your score.

Generate a week-by-week progression plan. Set your starting weight, reps, and weekly increment.

These tools are also built into the app

IronLog includes the 1RM calculator natively — and automatically tracks your PRs as you log.

Available now on the App Store. Start logging free, then unlock deeper progress tools when you want them.