Health & Wellness
Use private browser-based wellness calculators with published formulas, clear assumptions, and non-medical guidance.
Tools in this collection
- BMI Calculator — Estimate adult BMI, WHO classification, and a healthy-weight range.
- Body Fat Calculator — Estimate body-fat percentage with the US Navy circumference equations.
- Calorie Needs Calculator — Estimate BMR and daily maintenance energy with Mifflin–St Jeor.
- Ideal Weight Calculator — Compare Devine, Robinson, Miller, and Hamwi reference-weight formulas.
- Pregnancy Due Date Calculator — Estimate a pregnancy due date and gestational weeks from the first day of the last period, with clear assumptions and clinical limitations.
- Water Intake Calculator — Estimate general daily water intake from weight, climate, and activity.
Understand estimates, not diagnoses
These calculators apply published equations to the values you enter. They cannot evaluate individual health or replace professional care.
Use consistent measurements when comparing results and read each calculator’s assumptions and limitations.
Related collections
- Everyday Utilities — Practical date, cooking measure, electricity, code, and percentage tools for everyday tasks.