Health Calculators
Explore health calculators for BMI, body fat, nutrition, sleep, medication dosing, medical risk assessment, and clinical scores. Access reliable health tools designed for patients, students, and healthcare professionals.
20/20 Vision Calculator
Estimate and understand 20/20 vision measurements with a simple, easy-to-use calculator.
4T Score Calculator | HIT
Calculate the 4T score to assess the likelihood of heparin-induced thrombocytopenia (HIT).
6 Minute Walk Test Calculator
Calculate and interpret 6-minute walk test results for quick functional exercise assessment.
90 Minute Sleep Cycle Calculator
Calculate ideal sleep and wake times based on 90-minute sleep cycles.
A1c Calculator
Convert hemoglobin A1c into an estimated average blood sugar level.
AA Gradient Calculator
Check whether a gradient meets WCAG AA contrast requirements for readable text and accessible design.
ABI Calculator
Calculate the ankle-brachial index from blood pressure readings in the arms and ankles.
ABSI Calculator
Calculate your A Body Shape Index (ABSI) using height, weight, and waist circumference.
Absolute Eosinophil Count Calculator
Calculate the absolute eosinophil count from a white blood cell count and eosinophil percentage.
Absolute Lymphocyte Count Calculator
Calculate absolute lymphocyte count from a CBC and differential percentage.
Absolute Reticulocyte Count Calculator
Calculate the absolute reticulocyte count from reticulocyte percentage and red blood cell count.
ACFT Calculator
Calculate your Army Combat Fitness Test score based on your event results.
Acid Base Calculator
Calculate acid-base values for common health and chemistry use cases.
Added Sugar Intake Calculator
Estimate your daily added sugar intake and see how it compares with recommended limits.
Adderall Dosage Calculator
Estimate Adderall dosage based on the details you enter for a quick, easy reference.
Addiction Calculator
Estimate addiction risk based on common behavioral and health factors.
Adjusted Age Calculator
Calculate adjusted age based on a baby’s birth date and gestational age.
Adjusted Body Weight Calculator
Calculate adjusted body weight using your height, actual weight, and ideal body weight.
Adrenal Washout Calculator
Calculate adrenal washout values to help assess adrenal lesions from CT imaging measurements.
AFT Calculator — US Army Fitness Test
Calculate and estimate US Army AFT fitness test results based on your performance inputs.
Age-Adjusted D-dimer Calculator
Calculate an age-adjusted D-dimer threshold based on the patient’s age to help interpret test results more accurately.
AHI Calculator
Calculate your apnea-hypopnea index from the number of apneas, hypopneas, and sleep hours.
Air Force PT Calculator
Calculate your Air Force physical fitness test score based on your event results and age standards.
Albumin Creatinine Ratio Calculator
Calculate the albumin-to-creatinine ratio from urine test results to help assess kidney health.