About
Numbers you can actually use
The idea behind CalcMyHealth
Most health calculators online do one thing: they take your inputs and hand back a number. What they usually skip is the part that actually matters — what that number means, whether it's good or bad, and what a reasonable next step looks like. CalcMyHealth was built to close that gap.
What's here
Eight calculators cover the questions people search for most: BMI, daily calorie needs, TDEE and macros, body fat percentage, pregnancy due date, ovulation, blood pressure category, and sleep cycle timing. Every result comes with a plain-language readout and, where it helps, a visual gauge showing where you land in the range.
The formulas we use
- Mifflin-St Jeor equation — for calorie and TDEE estimates, widely regarded as one of the more accurate equations for estimating resting metabolic rate in non-clinical settings
- U.S. Navy circumference method — for body fat percentage, accurate to within roughly 3–4 percentage points of a DEXA scan
- Naegele's rule — for pregnancy due date estimates, adjusted for your average cycle length
- American Heart Association blood pressure categories — for the blood pressure checker
- 90-minute sleep cycle model — for the sleep calculator, accounting for average time to fall asleep
What this site isn't
CalcMyHealth doesn't replace a doctor, dietitian, or other qualified professional. Every calculator here works from population-level formulas and averages — useful for context and for tracking your own trends over time, but not a substitute for a real diagnosis or personalized care. We say this clearly on every calculator, not just buried in the fine print.
No accounts, no data stored
Every calculation runs in your browser. We don't ask you to sign up, and we don't store the numbers you enter. See our privacy policy for the full details.
Questions, corrections, or ideas? We'd like to hear them — visit the contact page.