BiteCal calculators
Free nutrition calculators
Use transparent estimates for calories, macros, protein, BMI and recipe nutrition. Each tool explains its assumptions and limitations.
Calorie calculatorEstimate daily calories, BMR and activity-adjusted maintenance.Maintenance calorie calculatorEstimate calories to maintain weight and learn how to check the estimate.TDEE calculatorCompare total daily energy expenditure across activity levels.Adaptive TDEE calculatorEstimate maintenance from a multi-week weight and intake log.Calorie deficit calculatorCompare a weekly rate with a dynamic weight-change timeline.Macro calculatorDivide a calorie target into protein, carbohydrate and fat.Protein calculatorEstimate a daily protein range by goal and body weight.Recipe calorie calculatorAdd ingredient weights and nutrition to estimate per-serving totals.Adult BMI calculatorCalculate BMI with WHO, Asia-Pacific or India reference cutoffs.BMI calculator for womenAdult BMI with pregnancy and body-composition context.BMI calculator for menAdult BMI with notes on muscle mass and interpretation.BMI calculator for kids and teensOpen the CDC age- and sex-specific BMI-for-age tool.
Calculators provide estimates for general information and are not medical advice.