HealthNest

Health calculators & tools

Quick, private estimates to support everyday decisions. No login required — sign in only if you'd like to save your results.

Body composition

BMI CalculatorEstimate your Body Mass Index and healthy weight range.
Ideal Weight CalculatorSee a healthy weight range for your height.
Body Fat EstimateEstimate body fat percentage from your measurements.
Waist-to-Height RatioA simple indicator that uses waist and height.

Energy & calories

BMR CalculatorEstimate the calories your body burns at rest.
TDEE CalculatorEstimate your total daily energy expenditure.
Calorie CalculatorEstimate daily calories for your goal.

Nutrition

Protein CalculatorEstimate a daily protein target for your goal.
Water Intake CalculatorEstimate a daily water intake starting point.
Macro CalculatorSplit your calories into protein, carbs and fat.