Pie Chart Maker

Pie Chart Maker shows how a whole divides into parts — a budget into its heads, votes among candidates, time across tasks. Paste the parts in the first column and their amounts in the second; each part becomes a slice sized by its share of the total, largest first, and the key beside the chart lists every part with its percentage. As a donut, the total sits in the middle. Pies are good at one thing — showing that one part is about half, or a quarter, of the whole — and poor at comparing many similar parts, so after six slices the smallest are added together as “Other”, and a bar chart is the better choice for more. Zero, negative or empty amounts are left out with a note, since they are not parts of a whole. Hover over a slice or use the arrow keys to read its amount and share, or switch to the table. Download as SVG or PNG — the key is part of the image — or the data as CSV.

1. Paste the parts and their amounts.
2. Give the chart a title; choose pie or donut.
3. Hover or use the arrow keys to read each slice.
4. Download SVG, PNG or CSV.

• One column of amounts; for several, use a bar chart.
• Six slices at most; the rest are grouped as Other (its parts are in the table).
• Percentages are rounded to one decimal, so they may add up to 99.9% or 100.1%.
• The chart is drawn in your browser. Your data is not uploaded or kept.

Divide each amount by the total and multiply by 100. The chart does this and shows it in the key.

They show the same thing; the donut adds the total in the middle and makes slices a little easier to compare by their arcs.

More than six slices are hard to read; the smallest are added together. Use a bar chart to show them all.

Zero, negative or empty amounts cannot be part of a whole and are left out; a note says how many.