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Absolute Eosinophil Count (AEC) = WBC x (eosinophil % / 100), the standard published formula for converting a differential eosinophil percentage into an absolute count. Commonly cited normal reference range is roughly 0-500 cells/uL. This calculator performs pure arithmetic on lab values you provide. For general reference and educational purposes only — not a medical diagnosis. Consult a doctor for actual interpretation of a complete blood count with differential.
How it works
Enter your WBC count (x10^9/L) and the eosinophil percentage from your differential. The tool multiplies them to get the absolute eosinophil count in cells/uL and compares it to the standard reference range.
- Enter wBC count (x10^9/L, i.e. x10^3/uL).
- Enter eosinophils on differential (%).
- Click Calculate to see your results.
Examples
WBC 7.0, Eosinophils 3%
AEC = 7,000 x 0.03 = 210 cells/uL — within the commonly cited normal range of 0-500 cells/uL.
Who should use it
- Reviewing a CBC with differential.
- Allergy and hematology education.
Industry applications
- Hematology and allergy/immunology reference
- Clinical education
Advantages
- Simple, standard formula.
- Quick reference against a normal range.
Limitations
- Reference ranges vary slightly by lab.
- Does not replace clinical interpretation.
Common mistakes to avoid
- Entering WBC in cells/uL instead of the standard x10^9/L (x10^3/uL) lab-report units, which would inflate the result 1000-fold.
Best practices
- Always use the WBC count and differential percentage from the same blood draw/report.
Tips
- Trends over multiple CBCs are often more informative than a single AEC value.