BMI & Healthy Weight Calculator.

Check your body mass index, see healthy weight ranges, and review waist measurement guidance in one place.

BMI & Healthy Weight Calculator

Enter your details to calculate body mass index, see your weight category, and review healthy ranges at a glance.

Show percentile estimate

Available for adults aged 20 years and older.

Your BMI snapshot

Based on the details you provided.

BMI

23.9

Healthy weight

Weight is in the range typically associated with the lowest health risk.

Healthy weight range for your height

50.4 67.8 kg

Estimated BMI percentile (adult)

50th percentile

Category reference

Underweight
0 18.4

Weight is below the range most associated with lower health risk.

Healthy weight
18.5 24.9

Weight is in the range typically associated with the lowest health risk.

Overweight
25 29.9

Moderately higher risk for cardiometabolic conditions.

Obesity
30+

High risk for heart disease, diabetes, and other conditions.

Use cases

Real-world uses.

Wellness Checkups
Track BMI alongside vitals during annual physicals or workplace wellness programs.
Coaching & Accountability
Nutritionists and coaches can evaluate BMI trends for clients and align targets with lifestyle habits.
Weight Management Planning
Set realistic goals for weight loss or gain and monitor progress with healthy range benchmarks.
Healthcare Documentation
Add BMI summaries to telehealth visits, chronic disease management plans, or electronic medical records.

How it works

Four steps.

  1. 01

    Enter your height and weight using metric or imperial units.

  2. 02

    Add waist circumference for additional cardiometabolic screening context (optional).

  3. 03

    Review the BMI value, category, percentile estimate, and healthy weight range.

  4. 04

    Copy the summary or explore charts and tips to plan next steps with your healthcare provider.

Features

Understand BMI With Context.

Calculate BMI with precision, review healthy ranges, and explore guidance to interpret results responsibly.

  • Precise BMI Calculation

    Switch between metric and imperial units to compute BMI instantly. View the exact value, category, and percentile estimate for adults.

  • Healthy Weight Range

    See the recommended weight span for your height with automatic conversions between kilograms and pounds.

  • Waist Circumference Insight

    Input waist measurements for cardiometabolic risk context with sex-specific advisory thresholds.

  • Classification Summary

    Review WHO BMI classification cards with category descriptions and quick badge highlights.

  • Shareable Results

    Copy a ready-made BMI summary for coaching, check-ins, or personal records in one click.

  • Evidence-Based Guidance

    Get quick reminders about BMI limitations and how to pair results with medical screening or body composition data.

FAQ

Questions.

Can't find an answer? Send us your question.

Is BMI an accurate measure of body fat?

BMI is a broad screening tool that correlates with body fat for most adults, but it does not directly measure fat distribution or muscle mass. Pair it with waist circumference, body composition tests, and medical labs.

How often should I track my BMI?

Checking every few months is adequate unless you are actively undergoing weight management or medical guidance. Focus on trends rather than single readings.

What if I have high muscle mass?

Athletes and lifters may have higher BMIs due to muscle. Use additional measurements such as DEXA, calipers, or InBody scans, and discuss results with a healthcare professional.

Does BMI apply to children?

Children and teens require age- and sex-specific BMI percentiles (CDC/WHO growth charts). This calculator is intended for adults age 18+.

How do waist measurements fit in?

Waist circumference complements BMI by identifying abdominal fat and cardiometabolic risk. Combine both metrics for a fuller picture.

Can I share these results with my doctor?

Yes. Use the share button to copy a quick summary and send it to your doctor, dietitian, or coach for collaborative planning.

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