Pie Chart Percentage Calculator
Calculate the percentages and degree angles for each slice of a pie chart. Enter up to 8 category values and instantly see each category's share of the total, the angle of its pie slice, and which category is largest.
A pie chart represents data as proportional slices of a circle. Each slice's angle is proportional to its share of the total: Degrees = (Value / Total) * 360. Similarly, each percentage is calculated as Percentage = (Value / Total) * 100. The slices must sum to 360 degrees (or 100%).
Pie charts are best suited for showing the relative proportions of a small number of categories (ideally 2-6). When there are too many slices, especially small ones, the chart becomes difficult to read. In such cases, grouping small categories into an 'Other' category or using a bar chart instead may be more effective.
When creating pie charts, start with the largest category at the 12 o'clock position and arrange slices clockwise in decreasing order. Use distinct colors for each category and label slices with both the category name and percentage. Avoid 3D effects, which distort the perceived size of slices.