It can
- Calculate your BMI from your height and weight
- Show in plain language which pathway the IFSO/ASMBS 2022 thresholds suggest discussing
- Let you contact the coordination team with only your BMI range
Free BMI tool
Is weight-loss surgery worth discussing for you?
Enter your height, weight and two short answers to see your BMI and the pathway the international guideline suggests discussing with a surgeon.
See your BMI and possible pathway
The calculation runs in your browser. Your height, weight and answers are never sent or stored.
cm
kg
ft
in
lb
Please enter a height between 120 and 230 cm (about 3 ft 11 in – 7 ft 6 in).
Please enter a weight between 30 and 350 kg (about 66–772 lb).
Please answer the age and health questions.
Your BMI
— kg/m²
Dashed lines mark the general surgery thresholds: 30 and 35.
Type your height and weight to place the marker on the scale.
What shaped this result
Source: IFSO/ASMBS 2022 indications for metabolic and bariatric surgery (PDF)
Message a coordinator on WhatsApp
Open in the WhatsApp app
The WhatsApp message only includes your BMI range; your height, weight and other answers are not sent.
This tool does not diagnose, confirm surgical candidacy or quote a price. BMI alone is not a decision criterion; the examining surgeon and team decide. SpesHealth coordinates requests.
Get a free consultation
A SpesHealth coordinator reviews your request and contacts you. It is free and you are under no obligation.
What to know before weight-loss surgery
BMI is a starting point. A surgical decision also depends on your overall health, tests and long-term follow-up plan.
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BMI is not the only measure
BMI does not distinguish muscle from fat or show where fat sits. Surgeons also look at waist size, related conditions and previous treatments.
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Preparation requires tests
Blood tests, imaging and sometimes an endoscopy are usually requested before surgery. Keep a list of your medications and previous operations ready.
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Surgery needs lifelong follow-up
Diet changes, vitamin supplements and regular check-ups keep results lasting. Ask about the follow-up plan once you are back home.
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Compare methods with the surgeon
Gastric sleeve and gastric bypass have different benefits and risks. Ask why a method is recommended for you and what complications can occur.
What this tool can and cannot do
The tool helps you prepare for a conversation with a specialist. It is not a medical assessment.
It cannot
- Confirm that you are a candidate for weight-loss surgery
- Recommend a surgical method or assess your risks
- Quote a price or promise results
BMI and weight-loss surgery questions
How is BMI calculated?
BMI is your weight in kilograms divided by the square of your height in metres. For example, someone 1.70 m tall weighing 100 kg has a BMI of about 34.6.
What BMI do you need for weight-loss surgery?
The IFSO/ASMBS 2022 guideline recommends surgery at a BMI of 35 or more, and suggests considering it at 30–34.9 when a metabolic disease such as type 2 diabetes is present. For people of Asian descent the threshold is 27.5. The surgeon makes the final decision.
Are my values stored?
No. The calculation runs in your browser; your height, weight and answers are not sent to SpesHealth. If you choose to message us on WhatsApp, the message only includes your BMI range.
Does my result mean I qualify for surgery?
No. The result only shows which conversation makes sense under the guideline thresholds. Candidacy is decided after an examination, tests and a review of your overall health.
What happens after I send a message?
A coordinator replies, asks for the information and tests the surgeon needs, and arranges a review at a partner hospital. Treatment decisions are made by the treating surgeon.
Ready to talk to a specialist?
Start with your BMI, then request a weight-loss surgery review from the coordination team.
Calculate my BMI