1RM Calculator & Strength Log

Know exactly how much you can lift. Enter any set — the weight and the reps — and the app estimates your true one-rep max, then turns it into a full training plan. Seven proven strength formulas (Epley, Brzycki, Lander, Lombardi, Mayhew, O'Conner and Wathan) plus a blended average give you a number you can trust for squat, bench, deadlift and overhead press. WHY LIFTERS USE IT - Estimate your 1RM from any weight and rep count, with no risky max-out attempt - Full percentage table for programming — see your exact load for 5x5 at 85%, heavy triples, hypertrophy and warm-up ramps - Log every lift, track personal records and watch your strength trend on clean charts - Get a strength-level estimate, from Beginner to Elite, scaled to your bodyweight - Learn the science with plain-English guides and cited references - Fully private: every number stays on your device HOW IT WORKS 1. Enter the weight (in lb) and reps you lifted 2. Read your estimated 1RM and full percentage chart 3. Log it and follow your progress over time Full access unlocks all seven formulas, the complete percentage table, unlimited logging and progress charts — through a weekly, yearly or one-time lifetime option. Stop guessing your numbers — train with real ones. Download the app and lift with a plan. — LEGAL — Terms of Use: https://web-levi.web.app/terms Privacy Policy: https://web-levi.web.app/privacy-policy Questions? tphuc.work@gmail.com