Top 5 Health Calculators: BMI, BMR, Calories, Body Fat & Water Intake

Infographic of 5 essential health calculators – BMI, BMR, Calorie, Body Fat, and Water Intake

Advanced Health Calculators

Comprehensive health calculators with accurate metrics and beautiful visualizations

— BMI — Calculate below

— BMR — Basal Metabolic Rate

— Calories / day — Use BMR + activity

— Water / day — Liters (≈ cups)

— Body Fat — Percentage

BMI Calculator

Body Mass Index (BMI) is a measure of body fat based on height and weight that applies to adult men and women.

Weight

Height

Your BMI Result

-

Underweight
<18.5

Normal
18.5–24.9

Overweight
25–29.9

Obese
30+

BMR Calculator

Basal Metabolic Rate (BMR) is the number of calories your body needs to perform basic life-sustaining functions.

Gender Male Female

Age (years)

Weight (kg)

Height (cm)

Your BMR Result

-

This is the number of calories your body needs at complete rest.

Calorie Calculator

Calculate your daily calorie needs based on your activity level and goals.

Your BMR (from above)

Activity Level Sedentary (little or no exercise) Lightly active (1–3 days/week) Moderately active (3–5 days/week) Very active (6–7 days/week) Extra active (physical job)

Goal Maintain weight Lose weight Gain weight

Your Daily Calorie Needs

-

Water Intake Calculator

Calculate your recommended daily water intake based on weight and activity level.

Weight (kg)

Activity (minutes of exercise per day)

Climate Temperate Hot/Humid Cold/Dry

Your Daily Water Intake

-

This is the recommended amount of water you should drink daily.

Body Fat Calculator

Estimate your body fat percentage using various methods. For best results, use skinfold caliper measurements.

Gender Male Female

Age (years)

Height (cm)

Neck Circumference (cm)

Waist Circumference (cm)

Hip Circumference (cm) - Women only

Your BMI (from above)

Enter skinfold measurements in millimeters (mm)

Chest

Abdominal

Thigh

Triceps

Suprailiac

Axilla

Your Body Fat Result

-

Essential Fat
2-5% (M), 10-13% (F)

Athlete
6-13% (M), 14-20% (F)

Fitness
14-17% (M), 21-24% (F)

Obese
25%+ (M), 32%+ (F)

Note: These calculators provide estimates only. For personalized health advice, consult a healthcare professional.

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