BMI (Body Mass Index) is a simple health indicator that estimates body fat based on a person’s height and weight. It is widely used to categorize individuals as underweight, normal weight, overweight, or obese.
Our BMI Calculator lets you:
- Instantly calculate BMI using height (cm) and weight (kg)
- Understand which health category you fall into
- Check BMI without storing or uploading data
- Use it securely — 100% client-side, no server involved
Why Use an Online BMI Calculator?
- ✅ No installations – Works instantly in your browser
- ✅ Fast & simple – Enter height and weight, get instant results
- ✅ Secure – No personal data leaves your device
- ✅ Free – No hidden charges or limits
👉 Try it here: Free BMI Calculator
Common Uses
- Health awareness – Check if your weight is in a healthy range.
- Fitness tracking – Track BMI progress while dieting or exercising.
- Medical reference – Doctors often use BMI as a quick assessment tool.
How Our BMI Tool is Different
Unlike many BMI calculators, Bittools BMI Calculator is designed with privacy and simplicity in mind:
- Instant results → No page reloads, no delays
- Privacy → Runs entirely on your device
- Clean interface → No ads cluttering your input area
Example: BMI Calculation
Formula:
BMI = weight (kg) ÷ [height (m)]²
Example Calculation:
Height: 170 cm
Weight: 65 kg
BMI = 65 ÷ (1.70 × 1.70) = 22.5
Category: Normal weight
Frequently Asked Questions
What is BMI?
BMI (Body Mass Index) is a value derived from a person’s height and weight that helps categorize their health status.
How do you calculate BMI?
Use the formula: BMI = weight (kg) ÷ [height (m)]². For example, 65 kg and 170 cm → BMI = 22.5.
Is BMI always accurate?
Not always. BMI does not account for muscle mass, age, or other health factors. It’s a guideline, not a diagnosis.
Do I need to install anything?
No. This tool is free, works instantly in your browser, and requires no downloads.
Final Thoughts
BMI is a quick way to check if your weight is within a healthy range. While not a perfect measure, it is widely used in healthcare and fitness. Our tool makes it simple, private, and free.
👉 Try our free Online BMI Calculator today.