Enter the red blood cell % and mean corpuscular volume (MCV) into the calculator to determine the hematocrit (HCT).
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HCT Formula
The following formula is used to calculate a hematocrit:
HCT = RBC * MCV / 10
- Where HCT is the hematocrit
- RBC is the red blood cell percentage (%)
- MCV is the mean corpuscular volume
HCT Definition
What is HCT?
HCT, short for hematocrit, is a blood test performed to determine the number of red blood cells in someone’s blood.
Example Problem
How to calculate HCT?
- First, determine the red blood cell percentage (%).
For this example, the red blood cell percentage is found to be 47%.
- Next, determine the mean corpuscular volume.
For this problem, the mean corpuscular volume is found to be. 750 mL.
- Finally, calculate the hematocrit.
Using the formula above, the hematocrit is found to be:
HCT = RBC * MCV / 10
HCT = 47% * .750L / 10
HCT = 3.52%/L
