> ## Documentation Index
> Fetch the complete documentation index at: https://cubed3-feat-druid-driver-streaming.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Pie & donut

> Show how a single measure is distributed across a small number of categories.

Pie charts divide a circle into slices proportional to each category's share of the total. Best for communicating part-to-whole proportions to a broad audience when you have a small number of clearly distinct categories (typically five or fewer).

## Variants

### Pie

Standard filled circle. Each slice's arc length is proportional to its value.

### Donut

A pie with a hollow center. Increase the **Inner radius** value in the Style tab to any non-zero value to switch to a donut. The hollow center can be used to surface a summary value via a [KPI](/docs/explore-analyze/charts/chart-types/kpi) tile on a dashboard, or simply to reduce visual density.

## Inner radius

Drag the **Inner radius** slider in the Style tab or enter a pixel value. Setting it to `0` returns to a full pie.

## Color and slice ordering

Slices are colored using the active [color palette](/docs/explore-analyze/charts/configuration/color-and-stacking) in palette order, matched to the sort order of your query results. To change which slice appears first, adjust the sort in the results table.