Count cells accurately with flexible hemocytometer inputs. Track viability, dilution, replicate variation, and sample totals. Visualize trends, download reports, and support reliable bench decisions.
Enter counts from up to nine large squares. Leave unused fields blank.
| Square | Total Cells | Dead Cells | Notes |
|---|---|---|---|
| 1 | 92 | 8 | Even spread observed |
| 2 | 88 | 7 | Minimal clumping |
| 3 | 95 | 9 | Clean chamber grid |
| 4 | 90 | 8 | Typical replicate count |
| 5 | 93 | 6 | Stable counting boundary |
Example only. Adjust your dilution factor and sample volume to match your assay setup.
Average cells per square = Total counted cells ÷ Number of counted squares
Cells per mL = Average cells per square × Dilution factor ÷ Large square volume in mL
Default shortcut = Average cells per square × Dilution factor × 10,000
Total cells in sample = Cells per mL × Sample volume in mL
Viability percentage = ((Total cells − Dead cells) ÷ Total cells) × 100
The default factor of 10,000 assumes one large square volume equals 0.0001 mL.
It estimates average cells per square, cells per milliliter, total cells in the sample, and optional viability metrics from hemocytometer counts.
A standard large hemocytometer square usually holds 0.0001 mL. Dividing by that volume is equivalent to multiplying by 10,000.
Counting more squares usually improves reliability. Many workflows use four or five large squares, but the best choice depends on variability.
It reflects how much the original sample was diluted before loading. A one-to-one mix with stain usually gives a dilution factor of 2.
When dead cell counts are entered, viability is calculated as live cells divided by total counted cells, then multiplied by 100.
It measures how consistent counts are between squares. Lower values suggest better distribution and more stable counting conditions.
Yes. Leave the default for standard chambers, or enter a different volume when using another chamber geometry or protocol.
Uneven mixing, clumping, bubbles, poor loading, or boundary counting errors can increase variation across squares and reduce confidence.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.