A small, honest set of fitness tools.

Every calculator on this site uses formulas published in peer-reviewed research or used by recognised governing bodies — Mifflin–St Jeor for metabolic rate, Epley and Brzycki for one-rep-max estimation, IPF coefficients for Wilks and DOTS scoring, and so on. Where multiple formulas exist for the same thing, both are shown so you can compare.

Nothing here is medical advice. Calculators are estimates. They are useful starting points for setting a calorie target or comparing your lifts, not a substitute for a coach, a dietitian, or a doctor.

Who builds this

LiftMacro is maintained by Babar Chechi, a long-time lifter who got tired of cluttered fitness sites and decided to build a simpler one. Suggestions, corrections, and bug reports are welcome — see the contact page.

How the site makes money

The calculators are free and will stay that way. Some pages may eventually include affiliate links to fitness products (clearly disclosed) or display advertising once traffic supports it. There are no accounts, no email collection, and no tracking beyond privacy-friendly page analytics.