Good labels transform a pie chart from confusing to instantly understandable. Learn the best practices for labeling every slice.
To label a pie chart, put the category name and the percentage on or beside each slice, and use a legend only when there are too many slices for that. In this editor the Labels on Slices control (under Title & Text) prints the percentage on every slice by default and also offers value, name and percentage, name only, or none; downloads keep the labels. A label is left off when its slice is too thin to hold it.
Every pie chart needs a title that tells viewers what the data represents without having to study the slices. A good title is specific — 'Q4 2024 Revenue by Product Line' is better than just 'Revenue'. Place the title above the chart where readers look first.
Each slice should be identified by a short, clear label — either directly on the slice, next to it with a leader line, or in a legend. Direct labels are the easiest to read because viewers do not have to match colors between the legend and the chart.
Add numeric context to each slice so viewers know the exact proportion. Display percentages for relative comparisons or raw values when absolute numbers matter. For maximum clarity, show both — for example, 'JavaScript — 32%'.
Place labels inside large slices where there is enough space for legible text. For small slices, use outside labels with thin leader lines pointing to the slice. Avoid overlapping labels at all costs — they make the entire chart unreadable.
Legends require viewers to match colors back and forth, which slows comprehension. Use a legend only when there are too many slices for direct labels, or when the chart is too small for text on each slice. Position the legend to the right or below the chart.
Preview the chart at the size it will actually appear — in a slide, document, or web page. Labels that look fine when editing may be too small when the chart is shrunk to fit a page layout. Increase font size or abbreviate labels as needed.
Practice what you learned with our interactive pie chart editor below. The chart is pre-filled with sample data to get you started.
Labels get crowded as slices multiply. In this site's download log, 16.5% of the 15,727 charts that recorded a slice count had 8 slices or more, and 8.6% had 10 or more. The median chart has just 4 slices, where a label on each slice is easy.
For the crowded 8-plus-slice case, merge the smallest categories into Other, switch the label to name only so the text is shorter, or move to a bar chart.
| Median chart | 4 slices | |
|---|---|---|
| 8 slices or more | 16.5% | of downloads |
| 10 slices or more | 8.6% | of downloads |
Source: this site's own download log (15,737 chart downloads from January 29 to October 3, 2026), counted by us on October 3, 2026. Anonymous: no chart contents are stored.