Absolute neutrophil count (ANC) calculator

Enter the white blood cell count and the neutrophil percentages from the blood test to get the absolute neutrophil count (ANC) and whether it falls in the mild, moderate or severe neutropenia range. Information only, not a diagnosis.

×10⁹/L
%
%
Absolute neutrophil count3,600 /µL
ANC in ×10⁹/L
3.6 ×10⁹/L
Neutropenia
1500/µL or more: no neutropenia

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How to use it

  1. Enter the white blood cell count. 6.0 × 10⁹/L and 6.0 × 10³/µL (6.0 K/µL) are the same number.
  2. Enter the segmented neutrophil percentage and, if reported, the band percentage.
  3. Read the ANC per microliter, in 10⁹/L, and the neutropenia grade.

How it works

ANC = WBC × (segs % + bands %) ÷ 100.

ANC Grade
1500/µL or more No neutropenia
1000–1499/µL Mild
500–999/µL Moderate
Below 500/µL Severe

Worked example

A blood count shows WBC 2.0 × 10⁹/L with 40% neutrophils and no bands. ANC = 2.0 × 1000 × 40 ÷ 100 = 800/µL (0.8 × 10⁹/L), moderate neutropenia.

With WBC 6.0, 55% segs and 5% bands: 6.0 × 1000 × 60 ÷ 100 = 3600/µL, normal.

Tips

  • Use the percentages from the same blood sample as the WBC.
  • Some reports give the absolute neutrophil count directly; you can check it here.
  • Fever above 38 °C with a known low neutrophil count needs urgent medical care.
  • This page is for information and does not replace your care team’s advice.

Frequently asked questions

How is the ANC calculated?

ANC = WBC × (segmented neutrophils % + bands %) ÷ 100. With the WBC in 10⁹/L (or 10³/µL), multiply by 1000 to get cells per microliter: 6 × (55 + 5) ÷ 100 = 3.6 × 10⁹/L = 3600/µL.

What ANC is normal?

1500/µL (1.5 × 10⁹/L) or more is usually taken as the lower limit. Some healthy people, more often of African or Middle Eastern descent, have a constitutionally lower count without extra infection risk.

What if the report shows only total neutrophils?

Enter that percentage as segmented neutrophils and leave bands at 0. Many automated analysers report a single neutrophil value that already includes bands.

Why does the ANC matter during chemotherapy?

Neutrophils fight bacterial infection. Below 500/µL the risk of serious infection rises sharply, and fever with a low ANC (febrile neutropenia) is treated as an emergency. Treatment teams also use the ANC to decide whether the next cycle can go ahead.

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