VivMetric

All Health Calculators

Free, US-units health calculators with no signup. Composite scoring, population percentiles, and official standard checkers (CDC, WHO, NHANES, AR 600-9, IOM, EWGSOP2) — plus the classic BMI, body fat, BMR and TDEE tools.

⚖️ Body Composition View hub →

BMI, body fat, waist ratios and composite scoring

BMI Calculator
CDC adult categories and healthy weight range.
Composite Health Index
One 0-100 score for BMI + waist + body fat, with radar chart.
Body Fat Calculator
Navy-method body fat estimate.
Waist-to-Height Ratio
Central adiposity screening (0.50 threshold).
Waist-to-Hip Ratio
WHO central-obesity thresholds.
Four-Metric Comparison
BMI vs waist vs body fat side by side.
Lean Body Mass
LBM estimate from height and weight.
Ideal Body Weight
Hamwi / Devine reference formulas.

🔥 Metabolism & Calories View hub →

BMR, TDEE, calorie budgets and deficits

BMR Calculator
Mifflin-St Jeor / Harris-Benedict.
TDEE Calculator
Daily energy needs by activity level.
Calorie Deficit
Deficit needed to hit a weight goal.
Reverse Target Weight
Goal BMI to target weight + weekly plan.
Fitness Goal Guide
Fat loss vs muscle vs health path.

🏃 Activity & Burn View hub →

Exercise calories, running and step estimates

Exercise Calories
Calories burned by activity.
Water Intake
Daily hydration target by weight.

😴 Sleep & Wellness View hub →

Sleep cycles and health screening

Sleep Cycle
Best bed / wake times for 90-min cycles.
Sarcopenia Screener
EWGSOP2 SARC-F muscle-loss screen.
Printable Health Report
PDF-ready body metrics summary.

🎖️ Population Standards View hub →

Official standards, percentiles and medical guides

NHANES BMI Percentile
Where you rank among U.S. adults.
Child BMI Percentile
CDC 2-20 growth reference.
Military Body Fat
AR 600-9 / AR 40-501 go-no-go.
Pregnancy Weight Gain
IOM 2009 ranges by pre-pregnancy BMI.
Teen BMI Calculator
CDC percentile for ages 2-19.

All tools provide educational health metric estimations only — not medical advice, diagnosis, or treatment.