Strength Calculators
Scientific, data-driven calculators designed to assess your performance, optimize your training zones, and track your development.
Strength Index Calculator
Synthesize your performance across multiple movements into a single score from 0 to 100. Get customized profile analysis, percentile ratings, and muscle balance charts.
One Rep Max Calculator
Estimate your absolute single-rep capability for any movement based on your rep performance. Compares 6 major equations and outputs percent-based load charts.
Ideal Bodyweight Calculator
Find your recommended, athletic, and strength-focused weight classes based on height structure and experience, with target standards.
Relative Strength Calculator
Analyze your absolute lift relative to your bodyweight, mapping ratios to Beginner through Elite tiers with percentile curves.
Wilks & Powerlifting Score
Calculate your Wilks score, DOTS score, and IPF GL points dynamically. Compare your relative powerlifting performance.
Strength Ratio Checker
Check your relative balance across core lifts (squat, bench, deadlift, overhead press, rows) to identify muscle imbalances and joint risks.
Strength Standards by Age
Calculate your age-adjusted strength standards using the official McCulloch coefficients. Compare your squat, bench, and deadlift within your age bracket.
Body Fat Percentage Calculator
Estimate your body fat percentage using the US Navy Tape Measure method or the BMI regression formula. View ideal charts, tracking guides, and health recommendations.
Pull-Ups 1 Rep Max Calculator
Calculate your pull-up and weighted pull-up one rep max (1RM) using scientific formulas adjusted for calisthenics bodyweight loads.
VO₂ Max & Aerobic Capacity
Estimate your VO₂ Max and cardiorespiratory rating using 4 validated tests: Cooper 12-Min, Rockport Walk, 1.5-Mile Run, and Heart Rate. Compare with ACSM charts.
Learning Resources
Strength Training Glossary
Explore plain-English definitions of essential training and powerlifting terminology like 1RM, RPE, RIR, Wilks, and progressive overload.
Browse Glossary →Testing Methodology
Understand the science behind our calculations. Learn how we normalize and evaluate physical standards for general and athletic populations.
Read Methodology →