Health
BMI Calculator (Imperial)
Calculate BMI using pounds plus feet and inches—perfect for US measurements and quick weight-class checks.
Imperial-friendly entry with feet/inches height and pounds for weight.
BMI (imperial units)
BMI = 703 × weight_lb ÷ (height_in)²
The constant 703 converts imperial measurements to match the metric BMI standard without manual unit conversion.
How to use
- Enter weight in pounds.
- Provide height in feet and remaining inches.
- The calculator combine the values, applies the BMI formula, and labels the category.
Example
Input: Weight = 150 lb, Height = 5 ft 8 in
Output: BMI ≈ 22.8 (Normal weight)
Student-friendly breakdown
This walkthrough emphasizes the most searched ideas for BMI Calculator (Imperial): bmi calculator, body mass index calculator, bmi calculator metric, bmi chart calculator. Start with the formula above, then follow the guided steps to double-check your work. For quick revision, highlight the givens, plug into the equation, and finish by verifying your units.
Need more support? Use the links below to open the long-form guide, browse additional examples, or hop into adjacent calculators within the same topic — each one is a quick way to double-check your work or handle a related question without starting from scratch.
Deep dive & study plan
BMI Calculator (Imperial): Feet/inches and pounds for BMI plus weight class insights. It's built around bmi, imperial, health, so you can go from a raw question to a checked answer without switching tools.
The math behind it: The constant 703 converts imperial measurements to match the metric BMI standard without manual unit conversion. The core relationship is BMI = 703 × weight_lb ÷ (height_in)², shown above the calculator so you can see exactly how your inputs turn into the result.
To use it well: (1) Enter weight in pounds. (2) Provide height in feet and remaining inches. (3) The calculator combine the values, applies the BMI formula, and labels the category. Keep your units consistent as you go, and re-run a case you already know the answer to — it's the fastest way to catch a typo before it throws off a result you're relying on.
Worked example: entering Weight = 150 lb, Height = 5 ft 8 in returns BMI ≈ 22.8 (Normal weight). Try swapping in your own numbers next, especially a case you're unsure about, before you use this for something that matters.
Quick retention checklist
- Speak the formula aloud (or annotate it) so the relationships stick.
- Write each step in your own words and compare with the numbered list above.
- Swap in new numbers for the Example to make sure the calculator (and your logic) handles edge cases.
- Check at least one related calculator below — it's the fastest way to confirm your numbers still line up from a different angle.
FAQ & notes
Why do we multiply by 703?
703 scales pounds and inches to the same ratio produced by kilograms and meters, delivering the standard BMI reading.
Can I mix feet/inches and decimal values?
Yes. You can type fractional inches such as 5.5 in to dial in precise height measurements.
What formula does the BMI Calculator (Imperial) use?
The constant 703 converts imperial measurements to match the metric BMI standard without manual unit conversion.
How do I use the BMI Calculator (Imperial)?
Enter weight in pounds. Provide height in feet and remaining inches. The calculator combine the values, applies the BMI formula, and labels the category.