How Do You Calculate BMI in Inches & Pounds?
To calculate BMI in inches & pounds, use the formula:
BMI = (Weight in pounds ÷ (Height in inches²)) × 703
Here’s how it works:
- Measure weight in pounds and height in inches
- Convert feet/inches to total inches (e.g., 5’6″ = 66 inches)
- Apply the formula and multiply by 703
- Compare your result to BMI categories (underweight, normal, overweight, obese)
BMI is a quick health check but doesn’t account for muscle mass or fat distribution. For full insight, combine it with other health metrics.
If you’ve ever wondered, “How do I get my BMI in inches and pounds?”, you’re not alone. Understanding your Body Mass Index (BMI) is a simple yet effective way to gauge your overall health. In this article, we’ll explore how to calculate BMI using imperial units (inches and pounds), provide a step-by-step guide, and include a worked example to make the process crystal clear. Whether you want to get BMI for personal records or for health tracking, this guide has you covered.
What is BMI?
Body Mass Index (BMI) is a numerical measure that uses your weight and height to estimate whether you’re underweight, normal weight, overweight, or obese. While it doesn’t measure body fat directly, it’s a widely used screening tool for potential health risks associated with weight.
The BMI Formula (Imperial Units)
When using inches for height and pounds for weight, the BMI formula is as follows:
BMI = (Weight in pounds ÷ (Height in inches × Height in inches)) × 703
The constant 703 is used to convert the result into a standard BMI value for imperial measurements.
Weight
Height
Age

Step-by-Step Guide to Calculate BMI
Let’s break down the formula into simple steps so you can easily calculate your BMI.
Step 1: Measure Your Weight
Start by weighing yourself on a reliable scale. Make sure to record your weight in pounds (lbs). For the most accurate measurement:
- Weigh yourself first thing in the morning.
- Remove heavy clothing and shoes.
Step 2: Measure Your Height
Next, measure your height in inches. If you know your height in feet and inches, convert it entirely to inches. For example:
If you are 5 feet 8 inches tall:
- 1 foot = 12 inches
- So, 5 feet = 5 × 12 = 60 inches
- Add the extra 8 inches: 60 + 8 = 68 inches
Step 3: Apply the Formula
Substitute your weight and height into the BMI formula:
BMI = (Weight in pounds ÷ (Height in inches × Height in inches)) × 703
Step 4: Interpret Your BMI
Once you calculate your BMI, compare it to the standard BMI categories to understand your results:
BMI Range | Category |
Less than 18.5 | Underweight |
18.5 – 24.9 | Normal weight |
25.0 – 29.9 | Overweight |
30.0 and above | Obese |
Worked Example: Calculating BMI
Let’s walk through an example to see how this works in real life.
Example:
Suppose you weigh 150 pounds and are 5 feet 6 inches tall. Here’s how you’d calculate your BMI step by step:
1. Convert height to inches:
- 5 feet = 5 × 12 = 60 inches
- Add extra 6 inches: 60 + 6 = 66 inches
2. Square your height in inches:
- Height × Height = 66 × 66 = 4356
3. Divide your weight by the squared height:
- Weight ÷ (Height × Height) = 150 ÷ 4356 = 0.03444
4. Multiply by 703:
- BMI = 0.03444 × 703 = 24.2
Result:
Your BMI is 24.2, which falls into the Normal weight category.
Why Calculate BMI?
BMI is a quick and easy way to assess your weight relative to your height, helping you understand where you fall on the spectrum of underweight, normal weight, overweight, or obese. It’s valuable for:
- Tracking Health Goals: If you’re working on losing or gaining weight, BMI can help you track your progress.
- Identifying Health Risks: Being underweight or overweight can increase your risk of certain conditions like heart disease, diabetes, and more.
- Creating Awareness: Knowing your BMI can motivate you to adopt healthier habits.
Limitations of BMI
While BMI is a useful tool, it’s not perfect. Here are some limitations to keep in mind:
- Doesn’t Account for Muscle Mass: Muscular individuals may have a high BMI despite being healthy.
- Doesn’t Measure Fat Distribution: BMI doesn’t tell you where fat is stored, which can be an important health factor.
- Not Suitable for Everyone: BMI may not be accurate for children, elderly individuals, or pregnant women.
For a more comprehensive health assessment, consider pairing BMI with other metrics like waist circumference, body fat percentage, or consulting a healthcare professional.

Tips for Maintaining a Healthy BMI
If your BMI indicates that you’re outside the normal weight range, here are some tips to get back on track:
1. Adopt a Balanced Diet
- Focus on whole foods like fruits, vegetables, lean proteins, and whole grains.
- Limit processed foods and sugary drinks.
2. Stay Active
- Aim for at least 150 minutes of moderate-intensity exercise per week.
- Include strength training to build muscle and boost metabolism.
3. Prioritize Sleep
- Poor sleep can lead to weight gain. Aim for 7-9 hours of quality sleep each night.
4. Monitor Your Progress:
- Regularly check your BMI and other health metrics to stay on track and take charge of your weight management.
Final Thoughts
Calculating BMI in inches and pounds is a straightforward process that anyone can do with just a few measurements. By following the formula BMI = (Weight in pounds ÷ (Height in inches × Height in inches)) × 703, you can quickly determine where you stand on the BMI scale.
Remember, BMI is just one part of the puzzle when it comes to health. Use it as a starting point, but don’t forget to consider other factors like diet, exercise, and overall lifestyle. If you’re unsure about your results or need personalized advice, consult a healthcare professional for guidance.
Now that you know how to get BMI using inches and pounds, try calculating your own BMI today and take the first step toward better health!
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