HOMA-IR is widely used in research and some clinics to track insulin resistance, though cut-offs vary between populations.
How to use the HOMA-IR Calculator
- Fasting glucose
- Fasting insulin
Results update as you type, and every field accepts the units shown in its menu.
How it works
Multiply fasting glucose by fasting insulin and divide by 405 (or by 22.5 when glucose is in mmol/L).
Inputs explained
| Field | What to enter |
|---|---|
| Fasting glucose | Units: mg/dL, mmol/L |
| Fasting insulin | In µU/mL |
What each result means
- HOMA-IR = [Fasting glucose] × [Fasting insulin] ÷ 405
- HOMA-%B (beta-cell function) = 360 × [Fasting insulin] ÷ ([Fasting glucose] – 63)
Example values
How the main result changes when Fasting glucose changes and everything else stays at the example values above:
| Fasting glucose (mg/dL) | HOMA-IR |
|---|---|
| 47.5 | 1.17 |
| 71.25 | 1.76 |
| 95 | 2.35 |
| 118.75 | 2.93 |
| 142.5 | 3.52 |
| 190 | 4.69 |
Health note: this calculator is for education and screening only and is not a diagnosis or treatment advice. Discuss your results with a qualified clinician.
Formula
HOMA-IR = fasting glucose (mg/dL) × fasting insulin (µU/mL) ÷ 405Worked example
Inputs — Fasting glucose: 95 mg/dL; Fasting insulin: 10 µU/mL.
Results — HOMA-IR = 2.35; HOMA-%B (beta-cell function) = 113 %.
Frequently asked questions
Is there a universal cut-off?
No; thresholds from about 1.9 to 2.9 are used depending on the population.
Do I need to fast?
Yes, both values must be fasting measurements.
What formula does the HOMA-IR Calculator use?
HOMA-IR = fasting glucose (mg/dL) × fasting insulin (µU/mL) ÷ 405.