HOMA-B (Steady-State β-Cell Function)
HOMA-B steady-state beta-cell function (Matthews 1985): 20 × fasting insulin / (fasting glucose − 3.5); ~100% is the reference for beta-cell function.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Fasting insulin
- 8 mU/L
- Fasting glucose
- 5.0 mmol/L
Result: HOMA-B 106.7% — steady-state β-cell function (~100% is the reference).
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Meaning
- The β-cell arm complementing HOMA-IR; ~100% is the normal reference.
What you enter
- Fasting insulin
- Fasting glucose
How this is calculated
- Formula
- HOMA-B (%) = 20 × fasting insulin (µU/mL) / (fasting glucose (mmol/L) − 3.5).
Matthews DR, Hosker JP, Rudenski AS, et al. Homeostasis model assessment: insulin resistance and β-cell function from fasting plasma glucose and insulin concentrations in man. Diabetologia. 1985;28(7):412-419. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.