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Updated June 2026

Health,
by the numbers.

BMI, calories, body composition and training pace – track your health with science-based tools. Free, instant, and private.

✓ Independently owned14 calculatorsEvery formula shown

Jean Borg

Founder & developer · How I build these →

Health · example

BMI

Body mass index

Your BMI

22.5

Normal · 68 kg at 174 cm

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Most used

Popular in health.

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BMI Calculator

Body mass index, metric & imperial.

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Calorie Calculator

Your daily calorie needs.

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TDEE Calculator

Total daily energy expenditure.

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Body Fat

Estimate your body-fat %.

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14

Health tools

100%

Free, no sign-up

0

Data stored

1 hr

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All 14 tools

Browse every health calculator.

Body composition

BMI CalculatorBody mass index & what it means› BMR CalculatorCalories burned at rest› Body Fat CalculatorEstimate body-fat %› Ideal Weight CalculatorHealthy weight range›

Calories & energy

Calorie CalculatorDaily calorie needs› Calorie Deficit CalculatorDeficit for weight loss› TDEE CalculatorTotal daily energy expenditure› Macro CalculatorProtein, carbs & fat split› Weight Loss CalculatorProject your weight loss›

Activity & training

Pace CalculatorRunning pace, time & distance› Running CaloriesCalories burned running› Walking CaloriesCalories burned walking› Steps to CaloriesCalories from step count› Steps to MilesConvert steps to distance›

Transparent math

Every health answer
shows its work.

No black boxes. Every tool shows the exact method or formula it used – so you can check it, trust it, and learn it.

Try the BMI Calculator ›
the method
# Body mass index
BMI = weight(kg) / height(m)²

# Basal metabolic rate (Mifflin–St Jeor)
BMR = 10·kg + 6.25·cm − 5·age + s

# Total daily energy
TDEE = BMR × activity factor

Questions

Health questions.

Are these health calculators really free?

+

Yes – every one is completely free, with no sign-up, no account, and no paywalled results.

How accurate are the results?

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They use established formulas (Mifflin–St Jeor and others) and are accurate for general guidance – estimates, not medical advice.

Is my data saved anywhere?

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No. Every calculation runs locally in your browser – nothing you enter is stored or sent anywhere.

Can you add a health calculator I need?

+

Yes – request it via the contact page and it can be built and made live fast, free of charge.

The developer

Built by a real person.

Jean Borg

Founder & developer · freecalculators.pro · Malta

I build and maintain every calculator on this site myself, from my desk in Malta. No faceless company and no outsourced content – each tool is coded by hand, shows the exact formula it uses, and gets fixed the moment something’s off. Need a calculator that isn’t here yet? Email me and it’s usually live within the hour, free.

✓ Handbuilt & maintained ✓ Every formula shown ✓ Nothing you enter is stored
About Jean › Contact me ›

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