How to use the hematocrit estimate calculator
Estimate the packed cell volume (hematocrit) from haemoglobin concentration. Enter hemoglobin in the field above; the estimated hematocrit is computed instantly and plotted on the chart so you can see how the answer changes.
Common searches this calculator answers include “hematocrit from hemoglobin”, “packed cell volume estimate”, “Hct from Hb”, “calculate hematocrit estimate”, “find estimated hematocrit”.
Formula
Variables
- hb — Hemoglobin (g/dL)
Worked example
With hemoglobin = 14 g/dL, the calculator gives estimated hematocrit ≈ 42 %.
Frequently asked questions
What is the hematocrit estimate calculator used for?
Estimate the packed cell volume (hematocrit) from haemoglobin concentration. It helps with questions such as “hematocrit from hemoglobin”, “packed cell volume estimate”, “Hct from Hb”.
What is the formula for the hematocrit estimate calculation?
Estimated hematocrit (%) = 3 × hb. Here hb is hemoglobin (g/dL).
What inputs do I need for the hematocrit estimate calculator?
You need hemoglobin in g/dL. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use the hematocrit estimate calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the hematocrit estimate result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.