Health & Fitness

Free A1C calculator to convert between HbA1c percentage and estimated average glucose (eAG). Supports bidirectional conversion, IFCC mmol/mol, mg/dL and mmol/L units, and ADA risk classification.

Free ABI Calculator to compute the Ankle-Brachial Index for both legs. Detect peripheral artery disease (PAD) risk with clinical six-tier interpretation and visual severity gauge.

Free ACFT and AFT score calculator. Calculate your Army Combat Fitness Test score for all 6 events with gender and age-group adjusted scoring, performance tiers, and training tips.

Free ACR calculator for albumin-to-creatinine ratio. Get KDIGO albuminuria classification (A1/A2/A3), CKD risk matrix, nephrotic range flag, and clinical interpretation.

Free Adderall Dosage Calculator — look up FDA-approved starting doses, dose ranges, and titration schedules for Adderall IR and XR by age group and condition. Includes a medication conversion tool to compare equivalent doses across 10 common ADHD stimulants.

Free Adderall Dosage Calculator — look up FDA-approved starting doses, dose ranges, and titration schedules for Adderall IR and XR by age group and condition. Includes a medication conversion tool to compare equivalent doses across 10 common ADHD stimulants.

Free Adjusted Age (Corrected Age) calculator for premature babies. Calculate your preemie's developmental age, catch-up period, clinical follow-up dates, and developmental milestones using gestational age or due date.

Free Army Fitness Test (AFT) calculator with 2025 scoring tables. Calculate your score for all 5 AFT events (MDL, HRP, SDC, PLK, 2MR) with age and gender-normed results, pass/fail status, and performance tier.

Free age calculator to instantly calculate your age in years, months, days, hours, and more. Find out when your next birthday is!

Free AHI calculator for sleep apnea. Calculate your Apnea-Hypopnea Index, severity classification, and treatment recommendations based on AASM guidelines.

Free Aleve (Naproxen Sodium) dosage calculator — get safe, indication-specific dose recommendations for adults and children, including OTC and prescription naproxen formulations, pediatric weight-based JIA dosing, stomach bleeding risk scoring, and next-dose timing.

Free Aleve (Naproxen Sodium) dosage calculator — get safe, indication-specific dose recommendations for adults and children, including OTC and prescription naproxen formulations, pediatric weight-based JIA dosing, stomach bleeding risk scoring, and next-dose timing.

Free Amoxicillin Pediatric Dosage Calculator — weight-based dose calculator for children covering all major indications including ear infections, strep throat, pneumonia, UTI, and dental prophylaxis. Includes suspension volume, dosing schedule, and multi-formulation comparison.

Free Amoxicillin Pediatric Dosage Calculator — weight-based dose calculator for children covering all major indications including ear infections, strep throat, pneumonia, UTI, and dental prophylaxis. Includes suspension volume, dosing schedule, and multi-formulation comparison.

Free ANC calculator for absolute neutrophil count. Get NCI CTCAE grading, neutropenia severity classification, febrile neutropenia alerts, and clinical guidance for oncology patients.

Free Army Physical Fitness Test (APFT) score calculator. Get instant push-up, sit-up, and 2-mile run scores by age group and gender with pass/fail results.

Free Arterial Age (Vascular Age) calculator using the Framingham Heart Study risk function, MESA CAC Score method, and Carotid IMT method. Discover your biological artery age and 10-year cardiovascular risk.

Free Arterial Age (Vascular Age) calculator using the Framingham Heart Study risk function, MESA CAC Score method, and Carotid IMT method. Discover your biological artery age and 10-year cardiovascular risk.

Free baby due date calculator with multiple formulas (Naegele's Rule, Mittendorf-Williams, Parikh's Formula), IVF support, trimester breakdown, zodiac signs, birthstones, prenatal screening schedule, and pregnancy progress charts.

Free baby growth percentile calculator using WHO and CDC standards. Calculate weight, length, and head circumference percentiles for infants and toddlers 0–36 months.

Free blood alcohol content (BAC) calculator using the Widmark formula. Estimate your BAC based on drinks consumed, body weight, gender, and time elapsed.

Free Body Adiposity Index (BAI) calculator. Estimate body fat percentage using only hip circumference and height — no scale required.

Free BBT calculator and fertility charting tool. Track basal body temperature, detect ovulation, calculate coverline, and identify your fertile window.

Free Biologically Effective Dose (BED) calculator. Compute BED and EQD2 using the Linear-Quadratic model with tissue-specific alpha/beta ratios, protracted delivery correction, boost dose modules, and multi-schema fractionation comparison.