Simple One-Rep-Max Calculator

Stop guessing your max. Train with confidence.

Simple One Rep Max Calculator helps you understand how strong you really are — so every workout has a purpose. By calculating your one-rep max using multiple proven formulas, you get realistic numbers you can trust, not just a single estimate.

Know your limits, choose the right weights, and progress safely — whether you’re pushing for new PRs or building strength over time.

Why you’ll love it

• Clear and reliable max lift estimates

• Multiple formulas for better confidence

• Training weights at the right intensity

• Fast, simple, and distraction-free

Less guessing.

Better progress.