🩺 Free Health Calculators

All our health tools in one place. Calculate your BMI, daily calories, protein intake, body fat percentage, basal metabolic rate, and much more — quickly, freely, and accurately.

✓ 12 free calculators • 100% no sign-up required
12
Calculators
3
Categories
100%
Free
0
Sign-ups
⚖️

BMI Calculators

5 tools
📊

BMI Calculator

General BMI

Calculate your Body Mass Index quickly and find out your classification based on WHO guidelines.

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👨

BMI Calculator for Men

BMI — Men

Personalized BMI calculator for adult men with specific reference ranges and health classification for the male profile.

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👩

BMI Calculator for Women

BMI — Women

Personalized BMI calculator for adult women with classification tables and interpretation tailored to the female profile.

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👴

BMI Calculator for Elderly Men

BMI — Seniors

BMI calculator adapted for men aged 60 and over, with criteria specific to the senior population and aging-related health factors.

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👵

BMI Calculator for Elderly Women

BMI — Seniors

BMI calculator adapted for women aged 60 and over, taking into account the particularities of female aging and senior health.

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🥗

Nutrition Calculators

4 tools
🔥

Calorie Calculator

Nutrition

Find out how many calories you need per day to lose, maintain, or gain weight in a healthy and sustainable way.

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🏃

Calories Burned Calculator

Physical Activity

Find out how many calories you burn during physical exercises and daily activities based on your weight and intensity.

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🥩

Protein Calculator

Nutrition

Calculate your ideal daily protein intake based on your weight, fitness goal, and physical activity level.

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⚡

BMR Calculator

Metabolism

Calculate your Basal Metabolic Rate (BMR) and find out how many calories your body burns at rest to keep functioning.

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💪

Body Calculators

3 tools
📏

Body Fat Percentage Calculator

Body Composition

Estimate your body fat percentage and understand how it relates to your overall health and fitness level.

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🎯

Ideal Weight Calculator

Ideal Weight

Discover your ideal weight range based on your height, gender, and body frame for a healthier lifestyle.

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💧

Water Consumption Calculator

Hydration

Find out exactly how many liters of water you should drink per day to stay properly hydrated and healthy.

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💡 Why use our calculators?
All Maniari calculators are based on scientifically recognized formulas endorsed by the WHO and leading health organizations. All calculations are performed locally on your device — no personal data is ever collected or stored. Use freely, with no sign-up and no cost!

🇧🇷 Versão em Português

All our calculators are also available in Portuguese for Brazilian users.