BMI Calculator | AfroTools

📏 Your Measurements

Units

Age (years)

Gender

Height

Weight

Activity Level

Waist (cm)

Hip (cm)

Waist: measure at narrowest point. Hip: measure at widest point around buttocks.

📊 Your Results

✓ Calculations complete! Save to history to track progress.

BMI

BMI Prime

ratio to healthy max

Ponderal Index

kg/m³

Body Age

biological estimate

BMI Range -

Underweight

< 18.5

Normal

18.5 - 25

Overweight

25 - 30

Obese

> 30

Ideal Weight Range

Weight to Goal

Body Composition

Body Fat %

Fat Mass

Lean Body Mass

Metabolic Profile

BMR

cal/day

TDEE

Daily Water Intake

liters

Daily Steps Goal

steps

For Weight Change (0.5kg/week)

Daily Deficit/Surplus

cal/day

Target TDEE

cal/day

🥗 Macro Targets & Nutrition

Goal

Target Calories

cal/day

Protein -

0% 0 cal

Carbs -

0% 0 cal

Fat -

0% 0 cal

Macro Notes:

Lose Fat: High protein (2.2g/kg) to preserve muscle
Maintain: Balanced protein (1.8g/kg) for daily needs
Gain Muscle: Extra protein (2.4g/kg) to build lean mass
Fat always 25% of calories for hormone health

🎯 Goal Timeline Calculator

Target Weight

Target Date

AI Bmi Calculator Advisor Powered by Claude

Ask me anything about this tool — I can help explain results, suggest strategies, and answer questions.

BMI & African Bodies

Research suggests that the relationship between BMI, body fat, and health risks can vary across ethnic groups. Some studies indicate that people of African descent may have a lower body fat percentage at the same BMI compared to European populations.

However, abdominal fat (measured by waist circumference) remains a strong predictor of metabolic risk. Use BMI alongside waist measurements for a fuller picture of your health.

Health Tips

Aim for 150 mins of moderate exercise weekly
Protein at every meal aids muscle retention
Drink water before meals to aid appetite control
Sleep 7-9 hours for optimal metabolism
Reduce added sugars, increase fiber
Track progress beyond the scale (measurements, photos)

Frequently Asked Questions

Is BMI accurate for everyone?

BMI is a useful screening tool but has limitations. It does not distinguish between muscle and fat mass, so athletes or muscular individuals may have a high BMI despite low body fat. It also does not account for age, sex, bone density, or fat distribution. The AfroTools BMI Calculator includes additional metrics like body fat estimation and waist-to-hip ratio for a more complete picture.

What is considered a healthy BMI range?

According to the WHO, a healthy BMI is between 18.5 and 24.9. Below 18.5 is underweight, 25-29.9 is overweight, and 30 or above is classified as obese. However, these ranges are general guidelines and should be considered alongside other health indicators.

Is my health data stored when I use the BMI calculator?

No. All calculations run entirely in your browser. Your height, weight, and other measurements are never sent to any server or stored remotely. Your data stays private on your device.

Does the BMI calculator support both metric and imperial units?

Yes. You can toggle between metric (kg/cm) and imperial (lbs/inches) units. The calculator automatically converts between systems so you can use whichever you are most comfortable with.

What additional health metrics does this calculator provide?

Beyond basic BMI, the AfroTools calculator provides body fat percentage estimation, macro nutrient targets, goal timeline projections, waist-to-hip ratio analysis, and a health risk assessment based on your measurements.

Use BMI Calculator in a safer care workflow

Use this as a screening and trend tool, not a diagnosis. The useful output is a number, a context band, and a clear next step for a clinic conversation.

Use It To Decide

Whether the reading is worth tracking over time
Which lifestyle or follow-up question to raise with a clinician
Whether another health tool should be opened next

Better Workflow

Enter recent measurements and repeat them under similar conditions
Save the result with date, units, and context such as activity or illness
Use the result to prepare better questions for a health worker

Do Not Ignore

Severe symptoms with an abnormal reading
Repeated high or low readings without follow-up
Using one calculator result to start, stop, or change treatment

BMI Calculator: save, export, and continue the workflow

This app now has its own benchmarked improvement layer, dashboard handoff, email-gated PDF plan, and a route into the Vitals checkup workflow.

Competitor feature checked

CDC adult BMI categories: BMI tools should show category, caveats, and follow-up measures.

Implemented here: Added dashboard/PDF plan actions and related vitals workflow links.

CDC adult BMI categories

Dashboard and PDF actions

Save this health plan to the dashboard workspace on this device.
Unlock a PDF version through the Health email gate for follow-up and visit prep.
Signed-in sessions attempt account workspace sync when the shared workspace API is available.

BMI & Body Composition Calculator

📏 Your Measurements

📊 Your Results

Body Composition

Metabolic Profile

For Weight Change (0.5kg/week)

📐 Body Measurements

🥗 Macro Targets & Nutrition

🎯 Goal Timeline Calculator

📈 Progress History

BMI Categories

What is BMI?

BMR & TDEE

BMI & African Bodies

Health Tips

Disclaimer

Frequently Asked Questions

Use BMI Calculator in a safer care workflow

Use It To Decide

Better Workflow

Do Not Ignore

BMI Calculator: save, export, and continue the workflow

Competitor feature checked

Dashboard and PDF actions

Continue in Vitals checkup