Calorie calculator guides
Read practical articles on calorie planning, TDEE, BMR, activity levels, and the limits of formula-based estimates before you set a maintenance, weight-loss, or muscle-gain target. Start with the methodology page if you want the formula and assumption overview first.
Calorie planning guides
The guide library focuses on the decisions that change how useful a calorie estimate becomes in real life.
Compare Sedentary, Light, Moderate, Very Active, and Athlete activity levels with practical examples to find the closest match for your typical week.
Learn how TDEE calculators estimate calorie needs, why your real maintenance calories may differ, and how to refine your estimate using your weight trend.
When your TDEE-based calorie target stops producing progress, use a structured adjustment process instead of cutting aggressively on impulse.
Compare Katch-McArdle and Mifflin-St Jeor, when each formula makes sense, and why the best choice still depends on the quality of your inputs.
Learn how to use your TDEE estimate to set a calorie surplus for muscle gain without letting a bulk turn into unnecessary fat gain.
Use your TDEE estimate to set a calorie deficit you can actually sustain, then adjust it when your body-weight trend says the estimate is off.
Learn the difference between BMR and TDEE, how each is calculated, and which number to use for maintenance calories, weight loss, or muscle gain.