BMI Calculator (Imperial)

Body Mass Index Calculator (ft/in/lbs)

BMI Calculator (Imperial)

BMI for Height

ft
in

and Weight

lbs

Imperial BMI Calculator: Body Mass Index Calculation in Feet and Pounds

What is an Imperial BMI Calculator?

An imperial BMI calculator computes body mass index using the imperial measurement system: feet, inches, and pounds. The formula is: BMI = (weight in pounds × 703) ÷ (height in inches)². This calculator is particularly convenient for US residents and others using the imperial system.

How to Use the Imperial BMI Calculator

  1. Enter your height in feet (e.g., 5 feet)
  2. Add the inches (e.g., 10 inches)
  3. Input your weight in pounds (e.g., 190 pounds)
  4. Click the "Calculate" button

BMI Categories in Imperial System

  • Underweight: BMI less than 18.5
  • Normal weight: BMI 18.5-24.9
  • Overweight: BMI 25.0-29.9
  • Obesity Class I: BMI 30.0-34.9
  • Obesity Class II: BMI 35.0-39.9
  • Obesity Class III: BMI 40.0 and above

Example BMI Calculation in Pounds and Feet

Example: Height 5 feet 10 inches (70 inches), weight 190 pounds:

BMI = (190 × 703) ÷ (70 × 70) = 133570 ÷ 4900 = 27.26

The result indicates overweight status.

Benefits of Imperial BMI Calculator

  • Familiar measurement units for Americans
  • Accurate calculation using the 703 conversion factor
  • Instant result categorization
  • Healthy weight recommendations in pounds

Limitations of Imperial BMI Calculator

It's important to note that the imperial BMI calculator doesn't account for:

  • Muscle-to-fat ratio and body composition
  • Body frame size and constitution
  • Age-related metabolic changes
  • Individual genetic factors

Converting Between Imperial and Metric BMI

The 703 conversion factor bridges imperial and metric systems:

  • 1 pound = 0.453592 kg
  • 1 inch = 2.54 cm
  • 703 factor accounts for unit conversion in BMI formula

Common Imperial BMI Examples

Check the BMI for common height and weight combinations:

Note: BMI is a screening tool, not a diagnosis. Consult a healthcare professional for a personal health assessment.

See Also

BMI Calculator (Imperial)

This calculator will help you to calculate Body Mass Index (BMI) for a given weight (lbs) and height (feet & inches). For example, it can help you find out what is BMI for 5ft 10in and 190 lbs? (The answer is: 27.26). Enter height (e.g. 5ft 10in) and weight (e.g. 190 lbs) and hit the 'Calculate' button.

FAQ

What is a healthy BMI?

A BMI between 18.5 and 24.9 is considered a normal, healthy weight for most adults. Below 18.5 is underweight, 25 to 29.9 is overweight, and 30 or above is classified as obese.

Does BMI account for muscle mass?

No. BMI is calculated only from height and weight, so it cannot tell muscle from fat. Very muscular people can have a high BMI while carrying little body fat, which is one of the formula's main limitations.

What is the BMI formula in the imperial system?

In imperial units, BMI equals your weight in pounds times 703, divided by your height in inches squared (BMI = lbs × 703 ÷ in²). For example, a height of 70 inches and 190 lbs give a BMI of 27.26.