Free Fitness & Strength Calculators

Instant, accurate tools for lifters — built on established formulas, no sign-up required.

1RM 1RM Calculator Estimate your one-rep max from any weight and rep count. BP Bench Press Max Calculator Estimate your max bench press from weight and reps. SQ Squat Max Calculator Estimate your max squat from weight and reps. DL Deadlift Max Calculator Estimate your max deadlift from weight and reps. OH Overhead Press Max Calculator Estimate your strict press or military press max from weight and reps. RM Rep Max Calculator Convert a known weight and reps to any target rep count. % 1RM Percentage Calculator Find your weight at any training percentage, or reverse-calculate your 1RM. TM Training Max Calculator Convert your 1RM into a safe training max for 5/3/1 programs. 531 5/3/1 Calculator Generate the full Wendler 5/3/1 four-week cycle from your training max. WU Warm-Up Set Calculator Generate your full warm-up ramp from the empty bar to your working weight. RPE RPE & RIR Calculator Convert a completed set into your estimated 1RM using the RTS RPE chart.