Mentzer Index
Result
Calculated result
16
Based on the values entered.
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Mentzer Index — free online calculator.
Formula
Mentzer Index = MCV / RBC count. <13: IDA; ≥13: thalassaemia
- Mentzer Index calculates its result from MCV (fL), RBC count (million/µL). It uses the formula Mentzer Index = MCV / RBC count. <13: IDA; ≥13: thalassaemia. Change any input to recalculate the result instantly. This is an informational calculation and is not medical advice.
- The main inputs are MCV, RBC count. Enter them in the units and format shown in the calculator.
- Use the measurement units shown beside each field. The result is an estimate and should be interpreted in context.
- Changing any input above recalculates the result with the same calculation engine used by this page.
Example: Mentzer Index
Inputs
- MCV: 80 fL
- RBC count: 5 million/µL
Using MCV (fL) = 80, RBC count (million/µL) = 5, the calculated result is 16.
Sample result: Calculating…
Frequently asked questions
What does the Mentzer Index calculate?
Mentzer Index — free online calculator.
Which values should I enter?
Enter MCV, RBC count using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: Mentzer Index = MCV / RBC count. <13: IDA; ≥13: thalassaemia.
Why might my result differ from another source?
Results can differ because measurement methods, rounding and assumptions vary. This calculator is an estimate and is not a medical diagnosis.
Does the result update automatically?
Yes. Changing an input updates the result using the same calculation engine shown on this page.