BMI
calculator

Enter your height and weight and we work out your BMI straight away. You get the result first, then the blood tests that see what height and weight cannot.

Go deeper than the number.

A blood test shows what height and weight cannot. Pick a broad first check, or more detail with Plus.

Vitals

The common blood tests, explained together.

23markers1blood draw

Includes

Iron and blood status, Heart and vessels, Blood sugar
Thyroid, Liver, Kidneys
Electrolytes and fluid balance

Price1,145 krView Vitals

Vitals Pro

Vitals plus inherited heart risk, B vitamins and more thyroid.

38markers1blood draw

Everything in Vitals, plus 15 markers

Iron and blood status: RDW
Heart and vessels: Apolipoprotein B, Lipoprotein(a)
Inflammation: CRP
Thyroid: Free T4
Vitamins and minerals: Vitamin B12, Folate (B9)
Liver: ALP, GGT, Bilirubin, Albumin
Kidneys: Cystatin C, Uric acid, Urea
Electrolytes and fluid balance: Phosphate

Price1,545 krView Vitals Pro

BMI does not diagnose anything and does not decide which blood test is right for you.

Your numbers are only the beginning.
What matters is the trend.

Count

Get an instant starting point with BMI and, if you want, your waist measurement.

Measure

A health check shows signals that height and weight cannot measure.

Track

Repeat the test and see whether your markers move over time.

What BMI cannot show.

A BMI value can feel reassuring or worrying and still leave the same questions unanswered. These markers add measurable context.

Blood sugarHbA1c

HbA1c reflects average blood sugar over roughly 8-12 weeks and supports diabetes assessment in appropriate clinical circumstances.

Read about HbA1c

Heart and vesselsTotal cholesterol

Total cholesterol measures the cholesterol carried in all lipoproteins and is interpreted with the rest of the lipid profile.

Read about Total cholesterol

ThyroidTSH

TSH is made by the pituitary gland and signals the thyroid to produce hormones. It is often measured first when assessing thyroid function.

Read about TSH

How BMI is calculated

BMI is your weight in kilos divided by your height in metres squared. Someone who is 178 cm and weighs 82 kg gets 82 divided by 1.78 times 1.78, which is 25.9. The formula uses neither age nor sex, and it was built for adults.

What happens to what you enter

Nothing. Height, weight and waist stay in your browser. The calculation happens there, nothing is sent to us and nothing is saved.

The adult ranges

These are the boundaries the World Health Organization uses for adults, and the ones the calculator classifies with. A value close to a boundary says less than it looks like it does: BMI does not tell muscle from fat.

Below 18.5UnderweightYour BMI is below the standard adult range. The number cannot say why. Iron, thyroid and nutrient status are examples of markers that can add context.
18.5 to 24.9Healthy rangeYour BMI sits in the standard adult range. Reassuring, but incomplete. The number says nothing about blood sugar, blood fats, thyroid, inflammation or nutrient status.
25 to 29.9OverweightYour BMI sits above the standard adult range. It does not decide your health. Blood sugar, blood fats, liver and thyroid can add the context the number is missing.
30 and aboveObesityYour BMI sits in the obesity range. The number is worth taking seriously, but it is not a diagnosis. Blood tests and a doctor's assessment give a fuller picture.

The waist measurement

BMI says nothing about where on the body the fat sits. Waist divided by height is a simple companion to it, with 0.5 the usual reference point. The field is optional and does not affect the BMI value.

What BMI does not measure

BMI does not tell muscle from fat and does not show where the fat sits. It also says nothing about blood sugar, blood fats, liver, kidneys, thyroid or nutrient status. Two people with the same BMI can have completely different blood results.

The BMI calculator is intended for adults and does not replace medical advice.

BMIcalculator