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.