Health calculators
Body metrics, energy needs, and pregnancy timing tools.
8 calculators
BMI Calculator
Calculate body mass index from height and weight, or solve for a target weight or height with cautious screening interpretation. Use the calculator above.
BMR Calculator
Estimate basal metabolic rate in calories per day from age, sex, height, and weight using the Mifflin–St Jeor equation. Use the calculator above.
Calorie Calculator
Estimate BMR and daily calorie expenditure from age, sex, height, weight, and an activity factor using Mifflin–St Jeor. Use the calculator above.
eGFR (CKD-EPI simplified) Calculator
Estimate glomerular filtration rate from creatinine, age, and sex using the calculator’s simplified CKD-EPI-style equation. Use the calculator above.
HOMA-IR Insulin Resistance Calculator
Estimate HOMA-IR from fasting glucose and fasting insulin with a clear formula, interpretation guidance, and medical limitations. Use the calculator above.
IV Drip Rate & Infusion Calculator
Estimate an IV flow rate in drops per minute and mL per hour from volume, infusion time, and tubing drop factor. Use the calculator above.
Pregnancy Due Date Calculator
Estimate a due date and conception date from the first day of a last menstrual period using the standard 280-day convention. Use the calculator above.
Waist-to-Hip Ratio Calculator
Calculate waist-to-hip ratio from matching measurements and understand this body-fat distribution screening measure with examples.