Free calculators
Numbers as a starting point, not a verdict.
Every calculator runs in your browser and stores no inputs. Each result includes the method, its limits and a sensible next step.
Needs and body measures
Calorie needs calculator
Estimate basal metabolic rate and daily calorie needs with the Mifflin-St Jeor equation and a transparent activity factor.
Open calculatorBMI calculator
Calculate BMI and interpret the result responsibly with adult reference ranges and clear limitations.
Open calculatorHealthy weight range calculator
Calculate a broad adult weight range from height using the common BMI reference span instead of a single ideal number.
Open calculatorProtein needs calculator
Calculate a general protein reference for healthy adults from body weight and age, with practical context and medical limits.
Open calculatorMeals and weekly planning
Recipe calorie calculator
Add ingredients by weight and calories per 100 grams, then calculate total and per-serving calories locally in your browser.
Open calculatorWeekly calorie calculator
Convert a daily calorie target into a weekly range and see how one higher day changes the remaining average.
Open calculatorMovement
Choose the number that answers your actual question.
Calorie needs provide a daily starting estimate. BMI and weight range describe only broad size relationships. Recipe and weekly tools help with practical planning, while activity and protein calculators answer narrower questions.
No result replaces your real trend or qualified personal assessment. Reuse a small number of relevant estimates rather than comparing many calculators until one confirms a preferred answer.