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Calcimator

CBC Differential Calculator

Calculate absolute white blood cell counts from CBC differential percentages and assess the neutrophil-to-lymphocyte ratio (NLR).

Inputs

x10³/µL
%
%
%
%
%

Results

Abs Neutrophils

4.5 x10³/µL

NLR (Neutrophil/Lymphocyte Ratio)

2 (normal <3)

Abs Lymphocytes2.25 x10³/µL
Abs Monocytes0.45 x10³/µL
Abs Eosinophils0.23 x10³/µL
Abs Basophils0.08 x10³/µL
Abnormal Flags0 values
How to Use This Calculator
  1. Enter complete blood count values: WBC (K/uL), RBC (M/uL), hemoglobin (g/dL), hematocrit (%), and platelets (K/uL).
  2. Input the differential percentages: neutrophils, lymphocytes, monocytes, eosinophils, basophils.
  3. Enter MCV, MCH, and MCHC for red cell indices.
  4. Review the calculated absolute cell counts and flag any values outside the reference range.
  5. Correlate flagged values with clinical presentation and prior results.

How the result changes with WBC Count

WBC CountAbs NeutrophilsNLR (Neutrophil/Lymphocyte Ratio)
106 x10³/µL2 (normal <3)
3521 x10³/µL2 (normal <3)
6539 x10³/µL2 (normal <3)
9054 x10³/µL2 (normal <3)

What each input means

WBC Count
Total white blood cell count in thousands per microliter (normal 4.5-11.0).
Neutrophils
Percentage of neutrophils (normal 40-70%).
Lymphocytes
Percentage of lymphocytes (normal 20-40%).
Monocytes
Percentage of monocytes (normal 2-8%).
Eosinophils
Percentage of eosinophils (normal 1-4%).
Basophils
Percentage of basophils (normal 0.5-1%).

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    WBC Count = 7.5, Neutrophils = 60, Lymphocytes = 30, Monocytes = 6 = 6 input(s) provided
  2. Calculate Abs Neutrophils
    Abs Neutrophils
    4.5 = 4.5
  3. Calculate NLR
    NLR
    2 = 2
  4. Calculate Abs Lymphocytes
    Abs Lymphocytes
    2.25 = 2.25
  5. Calculate Abs Monocytes
    Abs Monocytes
    0.45 = 0.45

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