What measurements do I need for this visceral fat calculator?

You need: biological sex, age (years), body weight (kg or lbs), height (cm or inches), waist circumference (measured at the midpoint between your lowest rib and hip bone), and thigh circumference (measured at the widest part of your upper thigh). The calculator converts imperial to metric automatically.

What do the VAT risk levels mean?

VAT below 100 cm² is Low risk — organs have healthy fat distribution and metabolic risk is low. 100–160 cm² is Moderate risk — some visceral fat accumulation is present; lifestyle changes are recommended. Above 160 cm² is High risk — significant organ fat is linked to elevated risk of type 2 diabetes, cardiovascular disease, and metabolic syndrome.

How accurate is the visceral fat calculation?

The calculator uses the Bonora et al. formula, validated against MRI measurements in peer-reviewed research. Accuracy is within approximately ±15–20 cm² for most adults. It is not equivalent to MRI or CT scanning but is a reliable tool for risk stratification and tracking relative change over time.

How do I measure waist circumference correctly?

Measure at the midpoint between the bottom of your lowest rib and the top of your hip bone (iliac crest) — approximately at navel level. Exhale normally, keep the tape snug but not compressing the skin, and stand upright with feet together. Do not suck in your stomach.

Is this visceral fat calculator free?

Yes, the VAT calculator is completely free with no email or registration required. You receive your visceral fat area in cm², your BMI, and your personalised risk level (Low, Moderate, or High) instantly. An optional personalised 14-day protocol report is available for €29.

Clinically Validated Formula

Your Free VAT Score

Fill in your measurements — takes under 2 minutes.

Enter Your Measurements

Biological Sex *

Male Female

Age (years) *

yrs

Weight * (kg)

Typical adult: 50–130 kg

Height * (cm)

Average adult: 155–195 cm

Waist circumference * (cm)

Measure at navel, relaxed · Healthy: <80 cm (♀) / <94 cm (♂)

Thigh circumference * (cm)

Measure at widest part · Average: 48–65 cm

Educational use only. Not a substitute for medical advice.

Educational estimate only — not medical advice. Formula validated against MRI imaging (Bonora et al.). Results are based on population-validated regression models and are provided for educational purposes only. Not a substitute for clinical assessment. Please consult a qualified healthcare professional for medical advice.

Your Free VAT Score

Enter Your Measurements

Your Results