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Overweight Risk Calculator

Work out overweight risk instantly with clear inputs, formula shown and shareable results.

About Overweight Risk Calculator

BMI and waist circumference capture different aspects of risk, so clinical guidelines assess them together. A BMI of 28.5 with a 98 cm waist scores 2 plus 2 - high risk for a man, since central fat compounds the effect of excess weight. A high waist at normal BMI still raises risk, which is why one measure alone is insufficient.

Formulas

Composite score

score = BMI points (0-6) + waist points (0-4)

Waist thresholds

men 94 and 102 cm; women 80 and 88 cm

Worked example

With the default values below, Overweight Risk Calculator returns Combined Risk Score of 4. Change any input above and every figure here is recalculated in your browser.

Inputs used

Body mass indexaccepts 10–70 kg/m2
28.5 kg/m2
Waist circumferenceminimum 30 cm
98 cm
Sexone of Male, Female
Male

Results

Combined Risk Score
4 /10
Points From BMI
2
Points From Waist Circumference
2
Risk Category
Increased risk

Step by step

  1. 1Values used
  2. 2Composite score
  3. 3Waist thresholds
  4. 4Combined Risk Score= 4 /10
  5. 5Points From BMI= 2
  6. 6Points From Waist Circumference= 2
  7. 7Risk Category= Increased risk

Assumptions and limits

  • The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to whole numbers, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
  • These figures are population-average estimates, not a medical assessment or diagnosis. Body composition equations carry errors of several percentage points, and healthy ranges vary with age, ethnicity, muscularity and medical history. Discuss weight or body composition goals with a qualified clinician or dietitian.
  • This is an estimate for general information and not professional medical advice. See the full disclaimer for the limits that apply to this kind of calculator.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

These figures are population-average estimates, not a medical assessment or diagnosis. Body composition equations carry errors of several percentage points, and healthy ranges vary with age, ethnicity, muscularity and medical history. Discuss weight or body composition goals with a qualified clinician or dietitian.

Frequently Asked Questions

Can I be at risk with a normal BMI?

Yes - normal weight central obesity carries measurable metabolic risk, which is exactly why waist is assessed separately.

Which measure should I try to change first?

Waist. Visceral fat responds quickly to modest calorie deficit and aerobic exercise, and it is where most of the risk sits.

Related Calculators

Overweight Risk Calculator – Calculate Combined Risk Score