Strength Calculators
Scientific fitness intelligence tools for 1RM estimations, body composition, cardiovascular performance, and composite powerlifting scores.
1. One Rep Max & Lift Estimators
One Rep Max (All Lifts)
Estimate your absolute maximum strength for any lift using 6 standard powerlifting formulas with zone breakdowns.
Bench Press 1RM Calculators
Bench Press Estimate your absolute maximum strength for any lift using 6 standard powerlifting formulas with zone breakdowns.
Squat 1RM Calculators
Squat Estimate your absolute maximum strength for any lift using 6 standard powerlifting formulas with zone breakdowns.
Deadlift 1RM Calculators
Deadlift Estimate your absolute maximum strength for any lift using 6 standard powerlifting formulas with zone breakdowns.
Pull-Up 1RM Calculators
Pull-Up Estimate your absolute maximum strength for any lift using 6 standard powerlifting formulas with zone breakdowns.
2. Powerlifting & Composite Scoring
Strength Index
Get a single, composite score from 0 to 100 representing your relative strength, normalized for age and gender.
Wilks & Powerlifting Score & DOTS
Wilks Calculator
Strength Ratio Checker
The definitive platform for strength standards, relative strength, and progress analysis. Derived from real data, not myths.
Standards by Age
Evidence-based strength standards and percentiles across 18+ barbell, dumbbell, and bodyweight exercises. Standardized for bodyweight, age, and sex.
3. Body Composition & Cardiovascular Analytics
Body Fat Calculator (US Navy & BMI Methods)
Estimate your body fat percentage, fat mass, and lean muscle mass using anthropometric tape measurements and standardized algorithms.
Ideal Bodyweight
Determine your recommended weight ranges for athletic wellness or strength training, and see your target lifts.
Relative Strength
Calculate your lift-to-bodyweight ratios and evaluate your neuromuscular performance against standardized tiers.
VO2 Max Calculator
Estimate your cardiovascular endurance using Cooper, Rockport, and Heart Rate protocols.
Cooper 12-Min Test
12-minute maximal running distance VO2 Max calculation.
Rockport 1-Mile Walk
1-mile timed walking and heart rate VO2 Max test.
Resources
Glossary
Explore evidence-based strength metrics, coefficient formulas, and sports science terminology...
Glossary →