BMI Calculator
NewCalculate Body Mass Index from height and weight, with metric and imperial units.
BMI calculator
BMI Calculator
Calculate Body Mass Index from height and weight, with metric and imperial units.
Switch between metric and imperial units to calculate body mass index and see where it falls on a category scale.
Body mass index
Enter height and weight to calculate BMI.
Frequently Asked Questions
What does the BMI Calculator do?
The BMI Calculator performs bmi calculations entirely in your browser. It handles a wide range of numeric inputs and is designed for both speed and accuracy.
How accurate are the results from BMI Calculator?
The tool uses JavaScript's 64-bit IEEE 754 double-precision floating-point arithmetic, providing 15–17 significant decimal digits of precision — sufficient for most scientific and engineering applications.
What number formats does BMI Calculator support?
The tool accepts integers, decimals, fractions, and scientific notation. Results are clearly formatted and can be copied as plain numbers or in exponential notation.
Can I use BMI Calculator for educational purposes?
Yes. Where applicable the tool displays step-by-step breakdowns, making it useful for students learning mathematical concepts or verifying homework calculations.
Is BMI Calculator free?
Yes, completely free with no limits or sign-up required. All calculations run locally in your browser with no data sent to any server.
Related Tools
Date Difference Calculator
Calculate the exact difference between two dates in days, months, years, and more.
Math Expression Evaluator
NewEvaluate mathematical expressions safely — supports arithmetic, trig, logs, sqrt, and more.
Prime Number Tools
NewCheck if a number is prime, find primes up to N, prime factorization, and nearest prime finder.