Health & Fitness calculator
BMI Calculator
Estimate body mass index from metric height and weight.
About the bmi calculator
The BMI calculator estimates your Body Mass Index from height and weight. BMI is a screening tool that categorizes weight status but doesn't measure body fat directly.
How to use this calculator
- 1
Enter weight
Enter your weight in kilograms.
- 2
Enter height
Enter your height in centimeters.
- 3
View results
See your BMI value and weight category.
How the calculation works
BMI = weight in kilograms ÷ height in meters squared. BMI is a screening measure, not a diagnosis.
Example: 70 kg and 175 cm gives a BMI of approximately 22.9.
Important health disclaimers
These calculators provide estimates based on population averages. Individual results vary based on genetics, body composition, medical conditions, and medications. Always consult a healthcare provider before starting a new diet or exercise program, especially if you have underlying health conditions.
Understanding body composition metrics
BMI doesn't distinguish muscle from fat. Body fat % is more accurate but depends on measurement technique. TDEE varies day-to-day based on activity. Macro targets are starting points — adjust based on your results, energy levels, and goals. Hydration needs increase with exercise, heat, and altitude.
Important limitations
This tool provides a mathematical estimate based only on the values entered. It does not account for regulations, taxes, lender fees, market conditions, or individual circumstances. Results are for planning purposes only — consult a qualified professional for regulated, medical, financial, or construction decisions.
Frequently asked questions about bmi calculator
How accurate is the BMI calculator?+
The calculation follows the displayed formula and retains full numeric precision before formatting the result.
Can I use the result professionally?+
Use it as a planning estimate. Confirm regulated, medical, financial, or construction decisions with a qualified professional.