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From BMI to medication dosages — instant, private, science-backed answers. No sign-up, no paywall, no fluff.
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Fitness
60 tools9 sub-categories — BMI, Body Fat, Skinfold Body Fat & more.
Health
60 tools12 sub-categories — CHA2DS2-VASc, Heart Rate Target, Blood Pressure Risk & more.
This week's favourites.
BMI Calculator
Calculate your Body Mass Index to assess if your weight is healthy for your height.
Body Fat Calculator
Estimate your body fat percentage using the U.S. Navy method or BMI-based formula.
Skinfold Body Fat Calculator
Estimate body fat percentage using the Jackson-Pollock 3-site or Durnin-Womersley 4-site skinfold method.
Lean Body Mass Calculator
Calculate your lean body mass using three different formulas for comparison.
FFMI Calculator (Fat-Free Mass Index)
Calculate your Fat-Free Mass Index to evaluate muscularity relative to height.
Waist-to-Hip Ratio Calculator
Calculate your waist-to-hip ratio to assess health risk from body fat distribution.
Waist-to-Height Ratio Calculator
Calculate your waist-to-height ratio as a simple indicator of health risk.
Body Type Calculator
Determine your body frame size based on wrist circumference and height.
CHA2DS2-VASc Calculator
Calculate your CHA2DS2-VASc score to assess stroke risk in atrial fibrillation.
Heart Rate Target Calculator
Calculate your target heart rate zone using the Karvonen formula for exercise prescription.
Blood Pressure Risk Calculator
Assess your blood pressure reading against AHA/ACC 2017 guidelines.
Cholesterol Ratio Calculator
Calculate key cholesterol ratios to assess cardiovascular risk.
ASCVD Risk Calculator
Estimate your 10-year risk of atherosclerotic cardiovascular disease using the Pooled Cohort Equations.
Framingham Risk Calculator
Calculate your 10-year coronary heart disease risk using the Framingham Risk Score.
QTc Calculator
Calculate the corrected QT interval using Bazett, Fridericia, Framingham, and Hodges formulas.
Mean Arterial Pressure Calculator
Calculate mean arterial pressure from systolic and diastolic blood pressure.
Calculators you can actually trust.
We don't reinvent science. Every formula links back to its source — WHO, CDC, NIH, peer-reviewed papers — so you can verify before you act.
Read our methodology →Every number traces back to a citation. Not “trust me bro” math.
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Common questions.
Are the calculators accurate?
Yes! Our calculators use formulas from trusted sources including WHO, CDC, and NIH. However, these are general tools and not a substitute for professional advice when it comes to health matters.
Should I use these for professional decisions?
These calculators are educational and informational tools only. For health matters, always consult qualified healthcare professionals. For other important decisions, seek appropriate professional advice.
Is my data private?
Absolutely. All calculations happen entirely in your browser. We don't store, collect, or transmit any of your data. Your information never leaves your device.
How often are the formulas updated?
We regularly review and update our calculators to align with the latest guidelines and research standards. Our formulas are based on current best practices.
Can I use DailyCalc on my phone?
Yes! All our calculators are fully responsive and work perfectly on smartphones, tablets, and desktops—perfect for calculating on the go.
Will DailyCalc always be free?
Yes! DailyCalc is and will always be free to use. No sign-up, no paywall, no premium tier locking the good stuff behind a credit card.
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