Stack several series into one bar per category, in absolute values or as a 100% share, with a legend and SVG or PNG download.. Stacked Bar Chart Maker is a free online tool from the ToolsRift Charts & Data Tools collection. It runs entirely in your browser — nothing to install, no signup, and your data never leaves your device.
Paste CSV with categories in the first column and one column per stacked series, choose absolute or 100% mode, set the theme and labels, then export SVG or PNG.
Absolute stacking keeps the real numbers, so bar height shows the total for each category as well as the split. 100% stacking rescales every bar to full height so you compare composition rather than size, which is the right choice when totals differ wildly.
As many columns as you add, though six to eight segments per bar is about the practical limit for readability. The legend lists every series in order, and segment value labels are hidden automatically when a segment is too small to hold text.
Yes. Each bar is stacked independently from its own row, so categories with missing series simply have fewer segments. Blank cells are treated as zero within a stack rather than breaking the bar.