Tools
Free nutrition tools
Fast, free, no-sign-up calculators to take control of your nutrition. Based on validated formulas as a starting point — then Renzy helps you track it day to day.
Calorie calculator
How many calories to eat per day for your goal, with your TDEE and macro split.
BMI calculator
Your Body Mass Index, WHO category and healthy weight range.
And after you calculate?
Knowing your numbers is step one. Renzy calculates them for you and then TRACKS them: photograph your food and see what’s left each day.
Try Renzy free