Plate map maker
Paint the layout by group, export it, and tape it to the bench.
Pick a group, then click or drag across the wells it covers. Add groups for treatments, doses, controls, and replicates, rename them, and export the finished layout. Everything runs on this page: your layout is never uploaded anywhere. The tool opens on the 24 well grid; the switch at the top also rebuilds it as a 96 or 384 well plate.
Click or drag across wells to paint them with the selected group.
How labs use it
Mark fixed positions first: controls and vehicle wells in the same columns every run, so a strange result is comparable across plates. Then paint the experimental groups in blocks that match how the plate is actually loaded, condition by condition, so the map and the bench work agree.
Export formats
The Excel download carries two sheets, the plate map grid and the sample list, matching the downloadable templates on this site. The CSV downloads give the same data for a lab notebook, a LIMS, or an analysis script, and Print produces a clean one page map for the bench binder.
Related guides
Common questions
Is my plate layout uploaded or saved anywhere?
No. The maker runs entirely in your browser. Nothing is sent to a server, and closing the page discards the layout, so export before you close it.
Can I map a 96 or 384 well plate here too?
Yes. The format switch at the top of the tool rebuilds the grid as 8 by 12 or 16 by 24. Switching formats clears the current plate, so export first if you need the layout you have.
Does it work on a phone or tablet?
It works, and a 24 well grid is small enough to map comfortably on a tablet at the bench. A desktop or laptop is still easier for naming many groups.