Pregnancy & Women's Health
7 specialized calculators for pregnancy nutrition, due date, weight gain, gestational age, trimester tracking, and pre-pregnancy planning. All include ACOG-referenced guidance.
Explore Calculators 7 CalculatorsFree Health & Medical Calculators
Free, evidence-based health calculators organized by medical category. Each tool includes validated clinical formulas, limitations, and a clear medical disclaimer. No personal data is stored.
Diabetes & Blood Sugar
4 validated tools for blood sugar unit conversion, HbA1c to eAG, diabetes risk assessment, and nutrition education. Based on ADA and NIDDK guidelines.
Explore Calculators 4 CalculatorsHeart & Cardiovascular
7 educational tools for blood pressure classification, pulse pressure, MAP, heart rate zones, maximum heart rate, and cardiovascular risk using validated models.
Explore Calculators 7 CalculatorsCholesterol
5 calculators for LDL, non-HDL, total/HDL ratio, LDL/HDL ratio, and unit conversion. Uses Friedewald and Martin-Hopkins equations with limitations clearly stated.
Explore Calculators 5 CalculatorsKidney Health
3 tools including eGFR (CKD-EPI 2021, no race coefficient), creatinine clearance (Cockcroft-Gault), and creatinine unit converter. Clear estimate disclaimers.
Explore Calculators 3 CalculatorsLiver Health
3 educational tools: AST/ALT ratio, FIB-4 index (validated formula), and liver test unit converter. Not diagnostic — clearly labeled as risk indicators only.
Explore Calculators 3 CalculatorsAnemia & Nutrition
5 calculators for hemoglobin/hematocrit conversion, iron intake reference, protein needs, and general nutrition. Educational only — cannot diagnose anemia.
Explore Calculators 5 CalculatorsWeight & Metabolic Health
Advanced metabolic calculators including BMR, TDEE, BMI, body fat, LBM, WHR, ideal weight, water intake, and macro distribution. Links to full Calorie Calculator.
Explore Calculators 9 CalculatorsCancer Risk Assessment
5 validated risk awareness tools: breast (Gail model), lung, colorectal, skin cancer risk factors checklist. Every result states: "Risk estimate is not a diagnosis."
Explore Calculators 5 CalculatorsGeneral Health
Additional tools for alcohol units, sleep needs, vitamin D, sun exposure, and general wellness metrics. Educational references from WHO, NIH, CDC.
Explore Calculators 5 CalculatorsPopular Individual Calculators
Pregnancy Due Date Calculator
Calculate estimated due date from LMP, conception date, or IVF transfer date.
eGFR Calculator (CKD-EPI 2021)
Estimate glomerular filtration rate using the 2021 CKD-EPI equation without race coefficient.
HbA1c to eAG Converter
Convert HbA1c percentage to estimated average glucose (mg/dL or mmol/L) per ADA formula.
ASCVD Risk Calculator
10-year atherosclerotic cardiovascular disease risk using pooled cohort equations.
LDL Calculator (Martin-Hopkins)
Calculate LDL cholesterol using the more accurate Martin-Hopkins equation vs Friedewald.
FIB-4 Liver Fibrosis Index
Non-invasive liver fibrosis assessment using age, AST, ALT, and platelet count.