Strength Science & Performance

Train Smarter.
Lift Heavier.

Strength training insights and powerful fitness tools — for competitive athletes and everyone who wants to stay strong and healthy.

Free Education From Experts
Free Tools Calculators & More
All Levels Beginner to Elite
Fitness Tools

Calculate. Measure. Optimize.

Free online calculators built for lifters. Get your numbers, track your progress.

Body Composition

BMI Calculator

Calculate your Body Mass Index instantly. Supports both metric (kg/cm) and imperial (lb/in) units with an interpretation guide.

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Body Composition

FFMI Calculator

Fat-Free Mass Index — the gold standard for evaluating muscle development potential and tracking lean gains over time.

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Strength

1-Rep Max Calculator

Estimate your one-rep max from any set and rep scheme using multiple validated formulas (Epley, Brzycki, Lombardi).

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Why LiftingNexus?

Free Education

Gain an edge with training wisdom earned by years under the bar. The LiftingNexus blog provides the veteran perspectives you won't find in a basic fitness blog.

Free Tools

Leverage professional lifting tools to optimize every set. Designed for those who demand more from their training than just "good enough."

Built for All Levels

No matter if you are a beginner or a seasoned athlete, LiftingNexus has something for you.