BMI Calculator
Calculate your Body Mass Index to understand your weight category and get personalized health insights.
Generally associated with good health outcomes
Healthy Weight Range
129 - 174 lbs
For your height of 5'10"
Great Job!
On Target
You are within the healthy weight range
Important Note
BMI is a general indicator and doesn't account for muscle mass, bone density, age, gender, or ethnic differences. Athletes and muscular individuals may have a high BMI despite being healthy. Always consult a healthcare provider for personalized health advice.
What is BMI?
BMI (Body Mass Index) is a simple calculation using your height and weight to estimate whether you have a healthy body weight. It was developed by Belgian mathematician Adolphe Quetelet in the 1830s and remains one of the most widely used health screening tools.
The formula divides your weight in kilograms by your height in meters squared. While it doesn't directly measure body fat, research shows BMI correlates with more direct measures of body fat and can indicate potential health risks.
BMI Formula
Metric Formula
BMI = weight (kg) / height (m)²
Imperial Formula
BMI = 703 × weight (lbs) / height (in)²
Why Calculate Your BMI?
Quick Health Screening
Get an instant snapshot of whether your weight is in a healthy range
Track Progress
Monitor changes over time as you work toward fitness goals
Risk Assessment
Identify potential health risks associated with weight
Goal Setting
Determine a target weight range for optimal health
Simple Calculation
Only requires height and weight - no special equipment
Research-Backed
Validated by decades of medical research worldwide
BMI Limitations
While BMI is a useful screening tool, it has important limitations to consider:
- Muscle vs. Fat: BMI doesn't distinguish between muscle and fat mass. Athletes and bodybuilders may have a high BMI despite having low body fat.
- Age Differences: Older adults tend to have more body fat than younger adults with the same BMI.
- Gender Differences: Women typically have more body fat than men at the same BMI.
- Ethnic Variations: Health risks at the same BMI can vary between ethnic groups.
- Fat Distribution: BMI doesn't indicate where fat is stored. Belly fat poses greater health risks than fat in other areas.
Frequently Asked Questions
What is BMI?
BMI (Body Mass Index) is a measure that uses your height and weight to estimate if you have a healthy body weight. It's calculated by dividing weight in kilograms by height in meters squared.
What is a healthy BMI range?
A healthy BMI is generally considered to be between 18.5 and 24.9. Below 18.5 is underweight, 25-29.9 is overweight, and 30 or above is considered obese.
Is BMI accurate for everyone?
BMI is a useful screening tool but has limitations. It doesn't distinguish between muscle and fat, so athletes may have a high BMI despite being healthy. It also doesn't account for age, gender, or ethnic differences in body composition.
How often should I check my BMI?
For general health monitoring, checking your BMI every few months is sufficient. If you're actively trying to lose or gain weight, monthly checks can help track progress. Remember to consider other health markers alongside BMI.
Can BMI predict health problems?
Higher BMI is associated with increased risk of conditions like type 2 diabetes, heart disease, and certain cancers. However, BMI alone isn't a diagnostic tool. Other factors like waist circumference, diet, and activity level also affect health risks.
Related Calculators
For more information about BMI and its use in health assessment, visit the Wikipedia article on Body Mass Index.