How to use the cell counting calculator
Compute cell concentration from a hemocytometer count. Enter cells counted, squares counted, dilution factor in the fields above; the cell concentration, cell concentration are computed instantly and plotted on the chart so you can see how the answer changes.
Formula
Variables
- c — Cells counted
- sq — Squares counted
- df — Dilution factor
Worked example
With cells counted = 180, squares counted = 4, dilution factor = 2, the calculator gives cell concentration ≈ 900,000 cells/mL; cell concentration ≈ 0.9 million cells/mL.
Frequently asked questions
What is the formula for the cell counting calculation?
Cell concentration (cells/mL) = c / sq × df × 1e4. Cell concentration (million cells/mL) = [Cell concentration] / 1e6. Here c is cells counted, sq is squares counted, df is dilution factor.
What inputs do I need for the cell counting (hemocytometer) calculator?
You need cells counted, squares counted, dilution factor. 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 this 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 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.