One-Rep Max (1RM) Calculator – Find Your True Strength
If you’ve ever wondered how much weight you can lift for just one perfect rep, this One-Rep Max Calculator is your ultimate training tool. Whether you’re a beginner exploring strength training or an experienced lifter chasing personal records, knowing your 1RM helps you plan smarter workouts, prevent overtraining, and set realistic strength goals. Our calculator uses proven formulas like Epley, Brzycki, Lombardi, and O’Conner to give you accurate results based on your latest training performance. Perfect for powerlifting, bodybuilding, CrossFit, and gym enthusiasts who want to train with science-backed precision.
Enter Your Details
Your Estimated One-Rep Max:
💡 Tip: Always use proper form and warm up before attempting heavy lifts. Your safety matters more than any number.