About

About Leg Day Supply

Leg Day Supply started as a small shop of hoodies, mugs and gifts for people who spend too much time under a barbell. This site adds the other thing lifters need every week: quick, honest calculators for strength and nutrition.

Every tool explains the formula behind it, runs entirely in your browser and works in pounds or kilograms. Our lifting guides answer the questions that come up around them, from protein to plate math. We add new calculators based on what lifters ask for, so if there's one you'd like to see, let us know.

A note on accuracy

Our calculators use published, widely used formulas, but every result is an estimate. They are not medical, nutritional or coaching advice. If you have a health condition, talk to a qualified professional before changing your training or diet.

Looking for gym apparel? Visit the Leg Day Supply shop.