Tools

HOMA-IR calculator

Put in the fasting glucose and fasting insulin from one blood test, and see your HOMA-IR, a number that estimates how hard your body is working to keep your sugar steady.

Written by Poshan Labs. Sources are named on the page. Last updated 26 October 2026.

Your answer will show here when the boxes are filled in correctly.

Fasting glucose

If your report gives insulin in pmol/L, divide by 6 first.

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What is a normal HOMA-IR?

There is no single agreed cut-off.

  • MDCalc notes that 2.0 to 3.0 is commonly used in the US, and that large US surveys (NHANES) use 2.5 or more.
  • Lower cut-offs, from about 1.4, are reported for metabolic problems in Asian populations.

So treat your number as a question for your doctor, not as a diagnosis.

HOMA-IRHow it is usually read
Under 1.4Below the lower cut-offs reported in studies
1.4 to 2.5The span of cut-offs reported for Asian populations. Read it with your doctor, alongside your other results
2.5 and aboveThe cut-off used in large US surveys (NHANES)

Sources: Matthews et al., Homeostasis model assessment, Diabetologia (1985); MDCalc, HOMA-IR: how the number is read.

How this works

HOMA-IR stands for homeostatic model assessment of insulin resistance. It comes from Matthews and colleagues (Diabetologia, 1985): fasting glucose in mg/dL multiplied by fasting insulin in µIU/mL, divided by 405. If your report is in mmol/L, the glucose is multiplied by 18 first, which is the same as dividing by 22.5. It is an estimate from one fasting sample, and it assumes your body makes its own insulin. Labs and studies disagree on where high starts, so your doctor reads it together with your other reports.

A number is a starting point, not a plan. On a free call, Puja looks at it with your reports and your routine.

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