The Free Strength Calculator That Reveals Your Athletic Potential
Enter one lift you do often and we’ll estimate your true 1-rep max, rank you against global strength standards, build your training zones, and reveal the athlete you’re built to become.
No credit card required, because there’s nothing to buy.
Explore your strength scan. Six insights from a single lift.
True 1-rep max
No need to grind a risky max attempt. One comfortable set is enough to estimate your ceiling.
Global strength level
See where you land, from Beginner to Elite, against blended, published strength standards for your sex and bodyweight.
Training zones
Exact weights and rep ranges to train max strength, muscle size, or endurance, personalized to your numbers.
Rep predictions
How many reps could you hit with 1, 2, 3, or 4 plates per side? We do the math for every load.
Projected feats
Playful projections of your max pull-ups, 5K time, and whether a muscle-up is within reach.
Athlete archetype
The fun part: discover the athlete you're built to become, from Calisthenics Machine to Future Olympic Lifter.
Which athlete are you built to become?
Your numbers map to one of six athlete archetypes. Run the scan to claim yours.
Diamond in the Rough
Massive untapped upside. Your numbers only go up from here.
Future Olympic Lifter
Built for the barbell. Raw strength like this is rare.
Calisthenics Machine
Elite strength-to-weight ratio. Bars, rings, muscle-ups: the playground is yours.
Marathoner in the Making
Light, efficient, and strong for your size. The perfect distance build.
The All-Rounder
Balanced power across the board. You'd hold your own in almost any sport.
The Rising Athlete
Solid foundation with clear room to grow. Gains come fast from here.
The evidence behind the numbers
Long-form, footnoted articles on strength, endurance and training over 40. Every figure sourced to primary research or public health guidance.
