Calculate total cells/mL, viable cells/mL, and viability from hemocytometer counts with dilution correction.
Open calculator →cells/mL = average per large square × dilution × 10⁴Turn viable and dead hemocytometer counts into cell density and percent viability for a standard Neubauer chamber workflow.
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Research use only. Verify critical calculations, reagent specifications, route or instrument limits, and procedures against your approved protocol and institutional requirements.
If 92 viable and 8 dead cells are counted across four standard Neubauer large squares after a 1:1 trypan-blue mix, enter dilution factor 2. The calculator uses the average count per large square and the standard 10⁴ chamber factor to estimate total and viable cells per mL.
Try it with your values →For the standard Neubauer large-square method used here, average the counted cells per large square, multiply by the sample dilution factor, then multiply by 10⁴ to estimate cells/mL.
Viability is calculated as viable cells divided by total counted cells (viable plus dead), multiplied by 100. The result depends on the counts and staining method you enter.
For a standard improved Neubauer large square, 1 mm² area × 0.1 mm depth equals 0.1 mm³, or 10⁻⁴ mL. Converting the average count in that volume to cells/mL therefore multiplies by 10⁴.
A 1:1 mix of cell suspension and dye commonly corresponds to a two-fold dilution of the original cell sample. Use the dilution defined by your actual counting method.