Reproducible cell counts, through your own microscope.

One counting standard for the whole lab

CellCount is a web app with a free plan that counts cells in hemocytometer images. Photograph the chamber with a phone at the eyepiece or a microscope camera; CellCount finds the grid by itself (if the rulings cannot be found, you can place the crossings by hand), counts live and dead cells by trypan blue exclusion, and gives viability and cells per mL with the dilution you set. Every count comes back with the image and the metrics behind it.

Counting by hand today? Read how to count cells with a hemocytometer, get cells per mL and viability from the free hemocytometer calculator, or see how to count cells from a phone photo of the chamber. New to it? Start with cell counting methods, the formula and viability in one page.