HOMA-IR Insulin Resistance Calculator

Calculate the Homeostatic Model Assessment of Insulin Resistance (HOMA-IR) from fasting glucose and insulin levels. A widely used research and clinical screening tool for insulin resistance.

📊 Clinical Reference📐 HOMA-IR = (Glucose × Insulin) / 405🏥 Health
Fasting glucose (mg/dL)
Fasting insulin (μU/mL)
Please enter valid values.

Formula & Reference

VariableSymbolFormulaUnits
HOMA-IR Insulin Resistance Calculator—HOMA-IR = (Glucose × Insulin) / 405index value

Step-by-Step Examples

Example 1
Optimal Sensitivity

Glucose=85mg/dL, Insulin=5μU/mL.

  • HOMA-IR = (85×5)/405 = 425/405 = 1.05
  • Just at the optimal/normal boundary
  • Good insulin sensitivity
✓ HOMA-IR = 1.05 (optimal-normal)
Example 2
Early Insulin Resistance

Glucose=100mg/dL, Insulin=12μU/mL.

  • HOMA-IR = (100×12)/405 = 1200/405 = 2.96
  • Suggests possible early insulin resistance
  • Warrants further clinical evaluation and lifestyle assessment
✓ HOMA-IR = 2.96 (elevated)
Example 3
Significant Resistance

Glucose=110mg/dL, Insulin=25μU/mL.

  • HOMA-IR = (110×25)/405 = 2750/405 = 6.79
  • Significantly elevated, consistent with marked insulin resistance
  • Common finding in metabolic syndrome and type 2 diabetes risk
✓ HOMA-IR = 6.79 (significantly elevated

Real-World Applications

📚
Research Studies
HOMA-IR is widely used in clinical research to assess and compare insulin resistance across populations.
👨‍⚕️
Metabolic Screening
Healthcare providers may use HOMA-IR alongside other markers when assessing metabolic syndrome risk.
📊
Diabetes Risk Assessment
Elevated HOMA-IR can be an early indicator considered alongside other risk factors for type 2 diabetes development.
🧪
Clinical Trials
Pharmaceutical and lifestyle intervention studies often use HOMA-IR as an outcome measure for insulin sensitivity changes.

Common Mistakes to Avoid

⚠️
Using a single measurement for diagnosis

Insulin and glucose levels fluctuate; a single HOMA-IR value should be interpreted in clinical context with other markers, not used alone for diagnosis.

⚠️
Ignoring assay-specific reference ranges

Insulin assays vary between laboratories, meaning 'normal' HOMA-IR ranges can differ. Always reference your specific lab's normal range when available.

⚠️
Treating HOMA-IR as equivalent to a diabetes diagnosis

HOMA-IR estimates insulin resistance but is not a diagnostic criterion for diabetes — diagnosis requires specific glucose/A1C criteria established by clinical guidelines.

Frequently Asked Questions

What is HOMA-IR used for? ▾
It's a calculated estimate of insulin resistance derived from fasting glucose and insulin levels, widely used in research and as a clinical screening reference for metabolic health assessment.
What is considered a normal HOMA-IR value? ▾
Generally under 2.0 is considered normal/optimal in many reference populations, though exact cutoffs vary by study population, ethnicity, and the specific insulin assay used.
How does HOMA-IR relate to insulin resistance and diabetes risk? ▾
Higher HOMA-IR values suggest the body requires more insulin to maintain normal glucose levels, a hallmark of insulin resistance often preceding type 2 diabetes development.
Can lifestyle changes improve HOMA-IR? ▾
Yes — research consistently shows that weight loss, regular exercise, and dietary changes (particularly reducing refined carbohydrates) can improve insulin sensitivity and lower HOMA-IR over time.
Should I interpret my HOMA-IR result myself? ▾
No — always discuss lab results with a healthcare provider who can interpret values in your complete clinical context, including other risk factors and your medical history.

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