BMI Calculator
Check your Body Mass Index to see if you are in a healthy weight range.
What is Body Mass Index (BMI)?
Body Mass Index (BMI) is a standard international measurement that relates a person’s weight to their height. Our online BMI calculator allows you to quickly find out which category you fall into (underweight, normal weight, overweight, or obesity) based on guidelines established by the World Health Organization (WHO).
BMI Reference Ranges:
- Under 18.5: Underweight
- 18.5 – 24.9: Healthy weight / Normal
- 25.0 – 29.9: Overweight
- 30.0 or more: Obesity
Note: BMI is an informative tool and does not replace professional medical evaluation, as it does not distinguish between muscle mass and body fat.
How to Use This BMI & Calorie Calculator
This tool helps you calculate your Body Mass Index (BMI) and estimate your daily calorie needs based on your height, weight, age, and activity level. It's a quick way to understand where you stand and how many calories you need to maintain, lose, or gain weight.
Understanding Your BMI Result
BMI is a screening tool that compares your weight to your height. A BMI between 18.5 and 24.9 is generally considered a healthy range, below 18.5 is considered underweight, and 25 and above is considered overweight. BMI doesn't account for muscle mass, so it's most useful as a general guideline rather than a precise health measure.
Calorie Calculator for Weight Loss
To lose weight, you generally need to eat fewer calories than your body burns each day. A common approach is a deficit of 500 calories per day, which can lead to roughly 1 pound of weight loss per week. This calculator estimates your maintenance calories first, so you can adjust from there based on your goals.
Frequently Asked Questions
Is BMI accurate for everyone?
BMI is a useful general indicator, but it doesn't distinguish between muscle and fat. Athletes or very muscular individuals may have a high BMI despite having low body fat.
How many calories do I need to maintain my weight?
This depends on your age, sex, height, weight, and activity level. Enter your details above to get a personalized estimate of your daily maintenance calories.
How fast should I aim to lose weight?
A safe and sustainable rate is typically 1-2 pounds per week, achieved through a moderate calorie deficit combined with regular physical activity.