Hemocytometer Cell Counting Calculator
Determine cell density and total yield from grid counts. Ideal for mammalian cell culture, yeast suspensions, and general micro-organism counts.
Grid Counts & Factors
Input your counting counts, grid squares, and dilution factor.
Cell Concentration
* Equal to 500,000 cells/mL.
Inclusion / Exclusion Border Rule
Count cells touching top and left borders; omit cells touching bottom and right borders.
Hemocytometer Chamber Dimensions & Grid Volumes Reference
| Grid Square Type | Dimensions (W × H × D) | Volume (mm³) | Volume (mL) & Conversion Factor |
|---|---|---|---|
| 1 Large Corner Square (16 smalls) | 1.0 × 1.0 × 0.1 mm | 0.100 mm³ | 10⁻⁴ mL (Factor: × 10,000) |
| 1 Central Medium Square (Yeast / RBC) | 0.2 × 0.2 × 0.1 mm | 0.004 mm³ | 4 × 10⁻⁶ mL (Factor: × 250,000) |
| 1 Smallest Inner Square (25 per medium) | 0.05 × 0.05 × 0.1 mm | 0.00025 mm³ | 2.5 × 10⁻⁷ mL (Factor: × 4,000,000) |
Calculation Methodology & Equations
Cell Concentration Equation
Multiplies average cell count per 0.1 mm³ large corner square by the volumetric factor 10,000.
Total Cell Yield
Calculates absolute total cell quantity present in the entire culture flask or pellet suspension.
Frequently Asked Questions
What is the standard volume of a large hemocytometer square? ▼
A standard Neubauer hemocytometer large corner square has dimensions 1.0 mm × 1.0 mm × 0.1 mm depth = 0.1 mm³ or 10⁻⁴ mL.
How do you calculate cell concentration (cells/mL) with a hemocytometer? ▼
Cell concentration = (Total Cells Counted / Large Squares Counted) × 10,000 × Dilution Factor.
What is the border rule for cell counting? ▼
Count cells that overlap the top and left triple-grid boundary lines, but omit cells touching the bottom and right boundary lines to prevent double-counting.
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