HOMA-IR Insulin Resistance Calculator

Enter your fasting glucose and fasting insulin values to instantly calculate your HOMA-IR insulin resistance index.

Enter Fasting Lab Values

Normal fasting range: 70–99 mg/dL (3.9–5.5 mmol/L)

Also written as µIU/mL — numerically identical to mIU/L

Reference Ranges

Optimal < 1.0
Normal 1.0 – 1.9
Borderline Resistant 2.0 – 2.9
Insulin Resistant 3.0 – 4.9
Highly Resistant ≥ 5.0

Enter your fasting glucose and insulin values, then click Calculate.

Summary

Enter your fasting glucose and fasting insulin values to instantly calculate your HOMA-IR insulin resistance index.

How it works

  1. Enter your fasting plasma glucose value and select the unit (mg/dL or mmol/L).
  2. Enter your fasting serum insulin value in mIU/L (also written as µIU/mL).
  3. The calculator converts glucose to mmol/L if needed, then applies the HOMA-IR formula.
  4. Your HOMA-IR score is displayed alongside an interpretation band (Optimal, Borderline, Resistant, Highly Resistant).
  5. Review the reference table to understand where your result falls relative to clinical thresholds.

Use cases

  • Screen for pre-diabetes or early metabolic syndrome.
  • Track insulin sensitivity improvements from diet or exercise changes.
  • Understand lab results before or after a doctor visit.
  • Compare fasting insulin values across different glucose units.
  • Research metabolic health and understand clinical HOMA-IR thresholds.
  • Support lifestyle interventions for weight management.

Frequently Asked Questions

Last updated: 2026-06-14 · Reviewed by Nham Vu