Free Fitness Tools
The numbers every lifter needs — calculated instantly, free, no signup.
One Rep Max Calculator
Estimate your 1RM from any set — Epley and Brzycki formulas.
TDEE Calculator
Your daily calorie burn, plus cut, maintain, and bulk targets.
Protein Intake Calculator
How many grams of protein you need per day for your goal.
Macro Calculator
Daily protein, carbs, and fat targets from your calories.
Body Fat Calculator
Estimate body fat percentage with the US Navy tape method.
Barbell Plate Calculator
Which plates to load per side for any target weight.
All of this, automatic
Buffro calculates your 1RM, calories, and macros as you train and eat — free on iOS and Android.
4.9Rating · Free on the App Store & Google Play