Beräkna BMI

BMI-kalkylatorn (Body Mass Index) beräknar omedelbart din viktstatus utifrån längd och vikt. Resultatet anger om du är underviktig, normalviktig, överviktig eller lider av fetma — enligt Världshälsoorganisationens gränsvärden. Även om BMI inte skiljer på muskelmassa och fettmassa är det ett brett erkänt och praktiskt screeningverktyg.

Kombinera ditt BMI-resultat med vår Kaloribehovsräknare för en fullständig bild av ditt dagliga energibehov. Och ta reda på hur mycket vatten din kropp behöver dagligen med vår Vattenintag Kalkylator.

What is BMI and how is it calculated?

Body Mass Index is calculated by dividing your weight in kilograms by the square of your height in metres: BMI = kg ÷ m². The WHO defines four categories: Underweight (below 18.5), Normal (18.5–24.9), Overweight (25–29.9) and Obese (30 and above). The formula was developed by Belgian mathematician Adolphe Quetelet in 1832 and remains the most widely used population-level screening tool endorsed by the World Health Organization, the NHS and the CDC. For children and teenagers, age- and sex-specific percentile charts are used instead of adult thresholds.

Why BMI alone is not enough

BMI does not distinguish between fat mass and lean muscle mass, which means a muscular athlete may register as "overweight" while a sedentary person with excess visceral fat may score in the "normal" range. For a more complete picture, doctors combine BMI with waist circumference (risk increases above 88 cm for women and 102 cm for men), body fat percentage, and blood markers such as fasting glucose and cholesterol. Use our Calorie Calculator alongside your BMI result to understand your true energy needs, and our Water Intake Calculator to support your metabolism effectively.