What a pie chart is
A pie chart divides a single whole into proportional slices. It works when the point is "this category dominates" and the slice count is small.
When to use one
- Showing budget, headcount or effort split across a handful of categories
- One share is obviously dominant and that is the message
- A single composition is being presented, not a comparison over time
The data format
One slice per line: Label, Value. Percentages are computed.
Paste rows like this — copy the example straight into the builder to see it render:
Engineering, 42 Design, 18 QA, 12 PM, 14 Research, 14
How to make one
- Paste your data into the Studio, or upload a CSV or XLSX file.
- Set your colours — by hand, from pasted brand hex codes, or extracted from your logo.
- Generate and export as PNG or SVG for your deck or report.
One thing people get wrong. Above five or six slices, people cannot compare angles reliably — use a bar chart or a Pareto instead. Pies also cannot show change, so never use two side by side to imply a trend.
Why it runs in your browser
Charts are parsed and drawn entirely on your own device. No rows, files or logos are uploaded, so a pie chart built from confidential project or process data never touches a server. You can verify it: open your browser's network tab while you generate one.