Free, accurate, and scientifically based tools to achieve your fitness goals
Find out your daily calorie needs for weight loss, maintenance, or muscle gain
Get the ideal ratio of proteins, carbohydrates, and fats for optimal results
Estimate your one-repetition maximum safely, without testing to failure
No hidden fees, subscriptions, or tricks. Just reliable fitness tools.
All calculators use peer-reviewed, validated scientific equations.
Get calculations in seconds, not minutes. Fast and efficient.
Start calculations immediately. No forms, emails, or hassle.
Works perfectly on any device - phone, tablet, or computer.
"The calorie calculator finally helped me understand my daily needs. I lost 7 kg in 3 months!"
"Using the 1RM calculator transformed my workouts. Now I can plan my training with scientific precision."
"The macro calculator made flexible dieting so simple. I can eat my favorite foods and reach my goals!"
"I recommend these calculators to all my clients. They are accurate, free, and based on real science."