Insulin Resistance Calculator (HOMA-IR)
Calculate your HOMA-IR score using fasting glucose and fasting insulin levels. This insulin resistance calculator gives a simple educational estimate with result interpretation.
Add your fasting glucose and fasting insulin values to estimate your HOMA-IR score.
What Is HOMA-IR?
HOMA-IR stands for Homeostatic Model Assessment of Insulin Resistance. It is a calculation that uses fasting glucose and fasting insulin to estimate how hard the body may be working to manage blood sugar.
HOMA-IR Calculator Formula
If fasting glucose is entered in mg/dL, this calculator uses: HOMA-IR = fasting insulin × fasting glucose ÷ 405. If fasting glucose is entered in mmol/L, it uses: HOMA-IR = fasting insulin × fasting glucose ÷ 22.5.
| Input | Meaning |
|---|---|
| Fasting glucose | Your blood glucose level after fasting, usually from a lab test. |
| Fasting insulin | Your insulin level after fasting, usually measured in µIU/mL. |
| HOMA-IR score | An estimate of insulin resistance based on glucose and insulin together. |
HOMA-IR Reference Ranges
HOMA-IR ranges can vary between labs, populations, and medical contexts. The categories below are educational guide ranges only and should not be used as a diagnosis.
| HOMA-IR Score | General Interpretation |
|---|---|
| Below 1.0 | Excellent insulin sensitivity range |
| 1.0 – 1.9 | Commonly considered normal range |
| 2.0 – 2.8 | Borderline or early concern range |
| 2.9 – 3.9 | Possible insulin resistance range |
| 4.0+ | Higher insulin resistance risk range |
Insulin Resistance Explained
Insulin resistance means the body may need more insulin than usual to help move glucose from the blood into cells. Over time, this can be linked with higher fasting insulin, higher blood sugar, weight gain around the waist, and metabolic health concerns.
Relationship Between HbA1c and HOMA-IR
HbA1c gives an estimate of average blood sugar over the past few months. HOMA-IR looks at fasting glucose and fasting insulin together. Someone may have a normal HbA1c but still have higher fasting insulin, so these tools look at different parts of metabolic health.
Signs That May Be Linked With Insulin Resistance
- Higher waist circumference
- Frequent hunger or cravings
- Low energy after meals
- Higher fasting glucose or HbA1c
- Difficulty managing weight
Can HOMA-IR Improve?
HOMA-IR may improve when lifestyle factors improve, but this depends on the individual. Common areas people review include body weight, waist size, physical activity, sleep, food quality, fiber intake, protein intake, and total calorie balance.
Limitations of This Calculator
This calculator depends on accurate fasting lab values. It may not be suitable for everyone, especially people using insulin, glucose-lowering medication, or those with specific medical conditions. Always interpret lab results with a healthcare professional.
HOMA-IR Calculator FAQ
Is HOMA-IR the same as diabetes diagnosis?
No. HOMA-IR is an estimate of insulin resistance. Diabetes diagnosis requires proper medical testing and professional interpretation.
Do I need fasting values?
Yes. HOMA-IR is intended to use fasting glucose and fasting insulin values.
Can HbA1c be normal but HOMA-IR high?
It can happen. HbA1c and HOMA-IR measure different things, so both can give different information.
Is a lower HOMA-IR always better?
Generally, lower values suggest better insulin sensitivity, but results should still be interpreted with health context.