Free Nutrition Tools
Quizzes, calculators, and guides to understand your body and habits — built by Healthly.
Featured · Free quiz
What kind of eater are you?
Map your relationship with food, stress, and self-talk — get a personalised playbook by email.
TDEE Calculator
Calculate your Total Daily Energy Expenditure based on age, weight, height, and activity level.
Use calculatorMacro Calculator
Get personalised protein, carb, and fat targets for your goal — whether cutting, bulking, or maintaining.
Use calculatorBMI Calculator
Check your Body Mass Index and understand what your number means with context on healthy ranges.
Use calculatorWhy use nutrition calculators?
Understanding your body's energy needs is the foundation of any nutrition plan. Whether you're trying to lose fat, build muscle, or maintain your weight, knowing your TDEE and macro targets gives you a clear roadmap.
Our calculators use evidence-based formulas (Mifflin-St Jeor for TDEE, flexible dieting ratios for macros) to give you personalised numbers in seconds. Pair these results with Healthly's AI-powered food tracking to stay on target every day.