BMI Calculator

Use the free BMI Calculator to calculate your Body Mass Index (BMI) from height and weight. Enter your values below and get an instant, accurate result.

BMI Calculator

Free & Instant

The BMI Calculator helps you calculate your Body Mass Index (BMI) from height and weight. Simply fill in the fields above and click Calculate to get an instant result.

This calculator is part of Calculate Wiki’s Health & Fitness Calculators collection.

What You’ll Need

  • Weight (lb)
  • Height (feet) (ft)
  • Height (inches) (in)

Formula Used

BMI = (Weight in lb ÷ (Height in inches)²) × 703

Example Calculation

Using example inputs — Weight = 160 lb; Height (feet) = 5 ft; Height (inches) = 9 in — the BMI Calculator returns:

ValueResult
BMI23.6
CategoryNormal weight

23.6 BMI. Category: Normal weight

Helpful Information

Results from the BMI Calculator are estimates based on standard formulas used in the health & fitness calculators field. For projects with significant cost, health, or safety implications, consider verifying results with a qualified professional.

Frequently Asked Questions

Is the BMI Calculator free to use?
Yes — the BMI Calculator on Calculate Wiki is completely free, with no sign-up required.
How accurate is the BMI Calculator?
The BMI Calculator uses a standard, well-documented formula from the health & fitness calculators field. Results are for informational and planning purposes.
Can I use this on my phone?
Yes, this calculator is fully mobile-friendly and works on any modern browser.
What does the result mean?
For the example values shown above, the result is 23.6 BMI. Category: Normal weight

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