🧮 Free Health Tools

Evidence-based health calculators

21 clinically-grounded tools covering heart, diabetes, kidney, women's health, mental health, and lifestyle — with personalised next steps and PDF export.

✓ Free✓ No account✓ Private✓ Physician-reviewed sources

❤️Heart Health

Cardiovascular risk, blood pressure, and rhythm tools.

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Blood Pressure Calculator

Check whether your reading is normal, elevated, or high.

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Heart Age Calculator

Estimate your heart's age compared with your real age.

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ASCVD 10-Year Risk Calculator

10-year risk of heart attack or stroke (Pooled Cohort Equations).

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Heart Rate Zone Calculator

Target heart rate zones for training.

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CHA₂DS₂-VASc Calculator

Stroke risk in atrial fibrillation.

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HAS-BLED Calculator

Bleeding risk on anticoagulation.

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🩸Diabetes

Risk screening and lab value converters.

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Diabetes Risk Calculator

ADA-style 7-question screen for type 2 diabetes risk.

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HbA1c Converter

Convert between % and mmol/mol, estimate average glucose.

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🫘Kidney Health

Kidney function and filtration estimates.

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eGFR Calculator

Estimate kidney filtration with the 2021 CKD-EPI equation.

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🌸Women's Health

Pregnancy and reproductive health calculators.

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Pregnancy Due Date Calculator

Estimate your due date from your last menstrual period.

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Ovulation Calculator

Predict your fertile window and next ovulation date.

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🧠Mental Health

Validated depression and anxiety screening tools.

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PHQ-9 Depression Screen

Validated 9-question depression screen.

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GAD-7 Anxiety Screen

Validated 7-question anxiety screen.

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😴Sleep Health

Sleep quality and apnea risk screens.

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STOP-BANG Sleep Apnea Screen

Identify your risk for obstructive sleep apnea.

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⚖️Weight & Fitness

Body composition and energy needs.

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BMI Calculator

Body Mass Index with WHO category and healthy weight range.

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Body Fat Calculator

US Navy body fat estimate.

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Calorie Requirement Calculator

Estimate daily calorie needs.

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Water Intake Calculator

Daily hydration target by weight and activity.

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🌿Lifestyle

Long-term wellbeing and habit calculators.

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Smoking Cost Calculator

See what smoking costs your wallet and your life expectancy.

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Alcohol Cost Calculator

Track the financial and health cost of weekly drinking.

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Life Expectancy Calculator

Lifestyle-adjusted life expectancy estimate.

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⚕️ All tools are educational — they support but do not replace a clinical conversation. Use the results to make your next medical appointment more productive.