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Bmi Calculator

Free Online Bmi Calculator (2026)

Calculate your BMI and use the result as one screening input in a broader weight-management conversation. BMI is useful context, but it does not by itself decide whether a person qualifies for Ozempic, Wegovy, or Mounjaro.

Screening Tool
Yes
BMI is useful for a first-pass weight-status screen in adults.
Standalone Eligibility
No
Medication eligibility depends on diagnosis, comorbidities, and the label.
Trend Value
Useful
A consistent BMI trend can help you and your clinician track change over time.
Dashboard
Your complete health overview in one place
🔥
14-day streak
Logged 18 of 18 scheduled shots
Next Shot Reminder
ACTIVE MEDICATIONS
TirzepatideB12
TIRZEPATIDE
🔥 14
2
days away
Thursday · 7.5mg
Medication Supply
Tirzepatide
6.2 / 10 mg · Vial
~42 days left · Mar 15
B12
4.4 / 5 ml · Vial
~88 days left · May 8
Retatrutide
1.2 / 5 mg · Vial
~6 days left · refill soon
Medication Levels
7 Days2 Weeks1 Month90 Days
CURRENT LEVEL
5.42mg
Mar 6
Today
ACTIVE MEDICATIONS
TirzepatideRetatrutide
0mg2.7mg5.4mg
18
Total Injections
💉 All time
122/78
Average BP
🩺 mmHg
8.4
Avg Mood
😊 /10
Health Chart
1mAll
218.6lb
↓ 8.4 lb · 3.7%
WeightInjectionsBPMood
2282222162102277.5mg7.5mg4mg10mg218
Feb 6Feb 14Feb 22Mar 2Today
Photos
12 photos · 2w streak
Week 1
Week 7
Today
Scheduled Reminders
Weight
Due today
Mood
Done
Blood Pressure
Tomorrow
Body Measurements
In 3 days
Dashboard
Your complete health overview in one place
🔥
14-day streak
Logged 18 of 18 scheduled shots
Next Shot Reminder
ACTIVE MEDICATIONS
TirzepatideB12
TIRZEPATIDE
🔥 14
2
days away
Thursday · 7.5mg
Medication Supply
Tirzepatide
6.2 / 10 mg · Vial
~42 days left · Mar 15
B12
4.4 / 5 ml · Vial
~88 days left · May 8
Retatrutide
1.2 / 5 mg · Vial
~6 days left · refill soon
Medication Levels
7 Days2 Weeks1 Month90 Days
CURRENT LEVEL
5.42mg
Mar 6
Today
ACTIVE MEDICATIONS
TirzepatideRetatrutide
0mg2.7mg5.4mg
18
Total Injections
💉 All time
122/78
Average BP
🩺 mmHg
8.4
Avg Mood
😊 /10
Health Chart
1mAll
218.6lb
↓ 8.4 lb · 3.7%
WeightInjectionsBPMood
2282222162102277.5mg7.5mg4mg10mg218
Feb 6Feb 14Feb 22Mar 2Today
Photos
12 photos · 2w streak
Week 1
Week 7
Today
Scheduled Reminders
Weight
Due today
Mood
Done
Blood Pressure
Tomorrow
Body Measurements
In 3 days
01BACKGROUND

How to Use This Calculator

Enter your height and weight to get a BMI result for screening and tracking purposes. For adults, BMI is a useful starting point, but it is only one consideration among history, symptoms, exam findings, and lab data.

Save the result if you want to compare it over time, but do not treat the number as a prescription decision on its own. Medication eligibility depends on diagnosis, comorbidities, and the specific product label.

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02KEY NUMBERS

What BMI Can Tell You

📈
Screening Tool
0Yes
BMI is useful for a first-pass weight-status screen in adults.
💪
Standalone Eligibility
0No
Medication eligibility depends on diagnosis, comorbidities, and the label.
🏆
Trend Value
0Useful
A consistent BMI trend can help you and your clinician track change over time.
03MECHANICS

Step-by-Step Instructions

1
Enter your height and weight in the calculator above
2
Review the calculated results
3
Use the number as one data point in a larger health conversation
4
Save your results to Shotlee if you want a trend over time
04DEEP DIVE

What BMI Can And Cannot Tell You

BMI is a screening tool for adults 20 and older. It helps estimate weight status, but it does not measure body fat directly and it does not decide medication eligibility by itself.

For GLP-1 therapies, the product label matters. Ozempic is a type 2 diabetes medicine; Wegovy is indicated for obesity or overweight with weight-related comorbidity; Mounjaro is also a type 2 diabetes medicine. BMI may start the conversation, but it does not end it.

If you are using this calculator to track change over time, consistent measurements matter. Use the same scale, the same conditions, and the same time of day when possible so the trend is meaningful.

05FAQ

Frequently Asked Questions

Enter your height and weight and the calculator will compute BMI. It is a screening result, not a diagnosis or medication decision.

Yes. All Shotlee calculators are free to use with no registration required.

It uses the standard BMI formula, so the arithmetic is accurate. What BMI cannot do is predict individual body composition or determine medication eligibility on its own.

No. BMI is only one factor. The final decision depends on the diagnosis, comorbidities, and the specific drug label or prescribing guidance.

Monthly is a reasonable cadence for most people tracking weight trends. Use the same conditions each time so the trend is easier to interpret.

That is normal. A changing BMI can help you and your clinician see whether a protocol, lifestyle change, or medication is moving in the right direction.

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📚References & sources

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