Eosinophils fight parasites and take part in allergic reactions. High counts are seen in allergies, asthma, eczema, parasitic infections, some drugs and, rarely, blood disorders. Persistent counts above 1,500 (hypereosinophilia) can damage organs.
How to use the Absolute Eosinophil Count Calculator
- White blood cell count
- Eosinophils
Results update as you type, and every field accepts the units shown in its menu.
How it works
Enter the white cell count and eosinophil percentage.
Inputs explained
| Field | What to enter |
|---|---|
| White blood cell count | Units: ×10⁹/L (= ×10³/µL), cells/µL |
| Eosinophils | In % |
Example values
How the main result changes when White blood cell count changes and everything else stays at the example values above:
| White blood cell count (×10⁹/L (= ×10³/µL)) | Absolute eosinophil count (cells/µL) |
|---|---|
| 4 | 240 |
| 6 | 360 |
| 8 | 480 |
| 10 | 600 |
| 12 | 720 |
| 16 | 960 |
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
AEC = WBC × eosinophils % ÷ 100
Eosinophilia: mild 500–1,500 · moderate 1,500–5,000 · severe > 5,000 cells/µL
Worked example
Inputs — White blood cell count: 8 ×10⁹/L (= ×10³/µL); Eosinophils: 6 %.
Results — Absolute eosinophil count = 480 cells/µL.
Key terms
- AEC
- Absolute eosinophil count.
Frequently asked questions
What is a normal eosinophil count?
Below 500 cells/µL.
What causes high eosinophils?
Allergies, asthma, eczema, parasites, drugs, and less often autoimmune disease or cancer.
When should I worry?
Counts above 1,500 for several weeks need investigation.