Calculators

BMI Calculator

Enter your height and weight in metric or imperial units to see your Body Mass Index and the WHO category it falls into.

Height (cm)Weight (kg)

22.9

Healthy

Step-by-Step Workflow

How to use BMI Calculator

Intuitive, friction-free workflow designed to get you from blank slate to job-ready in minutes.

01Step 1

Select or Import

Switch between metric (cm / kg) or imperial (ft, in / lb).

02Step 2

Edit & Polish

Enter height and weight.

03Step 3

Export ATS PDF

Read your BMI and category.

Core Capabilities

Engineered for speed, privacy, and recruiter compliance

Metric and imperial units

WHO category labels

Visual range indicator

Healthy weight range for your height

Common Scenarios

Targeted for modern job applications and career moves

Tracking weight progress over time

Initial fitness assessment

Filling medical or insurance forms

Comparing against WHO healthy ranges

Client-Side Privacy · Zero Paywalls

Why use Synctoolo's BMI Calculator?

BMI is a quick screening tool, useful as a starting point but never a full picture of health. Our calculator shows the result with context, not just a number.

100% Free Forever

Zero paid tiers, hidden subscriptions, or paywalls

Zero Account Walls

No forced email signups or credit meters

Local Memory Safe

Parsed inside your browser, never stored in DB

Clean PDF Exports

No watermark branding or export limits

Recruiter Guide: BMI Calculator

Authoritative standards for passing ATS filters and catching hiring managers' attention.

Understanding BMI and its limits

Body Mass Index divides weight by height squared to place adults in broad categories: underweight, healthy weight, overweight and obese. Health organisations use it as a population screening tool because it is fast and requires only two measurements.

BMI does not distinguish muscle from fat. Athletes with low body fat often score overweight. It also does not account for age, sex or ethnicity. Use BMI as one data point, not a complete health diagnosis. Consult a medical professional for personalised advice.

Frequently Asked Questions

Straightforward answers regarding ATS compliance, PDF rendering, and data privacy.

Is BMI accurate for athletes?+

Not very. Muscle is denser than fat, so athletes often score in the 'overweight' range despite low body fat. Use body-composition measurements for a fuller picture.

What BMI is considered healthy?+

The WHO defines 18.5 to 24.9 as the healthy range for adults. Below 18.5 is underweight, 25–29.9 is overweight and 30+ is obese.

Does BMI work for children?+

Not directly. Children use age- and sex-specific BMI percentiles. Our calculator targets adults aged 20 and over.

Why is BMI criticised?+

It doesn't distinguish fat from muscle, doesn't account for fat distribution, and was developed from data on European men. Treat the result as one data point, not a diagnosis.

How do I calculate BMI in imperial units (feet, inches, pounds)?+

Switch to imperial and enter your height in feet and inches plus your weight in pounds. The calculator applies the standard BMI formula (weight in lb × 703 ÷ height in inches²) and shows your result and category instantly.

What is a healthy BMI range?+

A BMI under 18.5 is underweight, 18.5–24.9 is a healthy weight, 25–29.9 is overweight, and 30 or above is obese. BMI is a general screening tool and doesn't account for muscle mass, so treat it as a guide, not a diagnosis.

Guides & Tutorials for BMI Calculator

In-depth articles and tutorials to get the most out of BMI Calculator.

All guides →

Calculators•8 min read

The Complete BMI Chart for Adults: Health Categories, Calculation Formulas, and Limitations Explained

Understand Body Mass Index categories defined by the World Health Organization. Learn metric and imperial formulas, muscle mass limitations, and health risk indicators.

Read guide

Calculators•10 min read

BMI Calculator: How to Calculate Your BMI and Understand the Result

Calculate your Body Mass Index (BMI) using your height and weight. Learn the BMI formula, understand common BMI categories, see how BMI is calculated, and discover the limitations of using BMI as a measure of health.