13+ calculators · 100% free

Your body,
by the numbers.

Pick a calculator, drop in your details, and get an instant, easy-to-read answer — backed by the same formulas clinicians use.

Start with BMI Browse calculators
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Your BMI
22.9
Normal weight
Height5'9"
Weight154 lb
BMI CalculatorDaily Calories (TDEE)Ideal WeightWater IntakeBody Fat %Macro SplitRunning PaceDue DateOvulation & FertilityHeart-Rate ZonesOne-Rep Max (1RM)VOâ‚‚ MaxWaist-to-HeightBMI CalculatorDaily Calories (TDEE)Ideal WeightWater IntakeBody Fat %Macro SplitRunning PaceDue DateOvulation & FertilityHeart-Rate ZonesOne-Rep Max (1RM)VOâ‚‚ MaxWaist-to-Height

Pick your calculator

Color-coded by category — every one explains your result in plain language.

Most popular

BMI Calculator

Your body mass index from height & weight.

Calculate now

Daily Calories (TDEE)

Energy you burn per day.

Ideal Weight

A healthy target range for you.

Water Intake

Your daily hydration target.

Body Fat %

Estimate your body fat (U.S. Navy method).

Macro Split

Protein, carbs & fat targets.

Running Pace

Pace, speed & finish times.

Due Date

Estimate your baby’s due date.

Ovulation & Fertility

Find your fertile window.

Heart-Rate Zones

Your training zones by heart rate.

One-Rep Max (1RM)

Your estimated max strength.

VOâ‚‚ Max

Your aerobic capacity.

Waist-to-Height

A simple cardiometabolic-risk screen.

Why VitaDup

Numbers are only useful when you understand them.

Most calculators spit out a figure and leave you guessing. VitaDup always tells you what your result means, whether it’s in a healthy range, and what you can do about it — in language anyone can follow.

Plain language

No jargon. Every result is explained simply.

Trusted formulas

Based on established clinical methods.

Instant & free

Results as you type. No sign-up.

Local units

Right units and language for your country.

1
Enter details

Slide or type your basics — height, weight, age. Metric or imperial, your choice.

2
Read the gauge

An animated gauge shows where you land and marks the healthy range clearly.

3
Know what’s next

Get a plain-language explanation and practical, doable next steps.

Know your numbers today

Start with your BMI and explore free calculators — no account, ever.

Start with BMI
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