# Pie Chart Percentage Calculator

The pie chart percentage calculator is here to help you create a pie chart — so a chart of percentages of a given dataset. Read on to learn how to calculate pie chart percentages given raw data or angles.

## What is a pie chart used for?

A pie chart is a graph you can use when you want to **visualize proportions in categorical data**. It's called a **pie** chart because, like a pie, it's circular and divided into slices. The slices represent different categories of your data. Each slice shows how much of the data belongs to a certain category, making it easy to see how big each category is compared to the whole.

## How to calculate pie chart percentages?

To calculate pie chart percentages:

- Find the total of all observations in a dataset.
- Divide each observation category value by the total.
- Multiply by 100. These are the corresponding percentages of each group from the total.

If you also want to create a pie chart, then for each category:

- Multiply the value from point 2 by 360°.
- Create a sector with this degree measure in a pie chart.

Repeat for all other categories. All the segments together should create a full circle.

If you don't know the values of each category, you can find the percentages from the angle values with an equation: `Percentage = (Angle/360°) × 100%`

. Additionally, if you know the total value of the dataset, you can recover the value of each category by multiplying the total value by the percentage of each category.

## How to use our pie chart percentage calculator?

To use our calculator and generate a circle graph with percentages:

- Find the number of items/values that fall into different categories. In our calculator, you can create a pie chart with up to 20 different groups.
- Enter values for each group.
- For each group, the calculator will find the percentage fraction of the total, as well as the central angle of the slice on a pie chart.

## Other similar calculators

To learn more about pie charts, percentages, or fractions, go to one of our other calculators:

## FAQ

### How to make a pie chart with percentages?

To create a pie chart with percentages:

- Draw a circle and a straight line from the center of the circle to its side. By adding segments in this circle, you'll make a pie chart.
- Turn the first category percentage into a fraction. For example, 40% would be equal to
`0.4`

.

If you don't know the percentage, calculate it by dividing the category value by the value of the total observations:`Category value / Total observations × 100%`

- Multiple it by 360°. That's the central angle of a segment on a pie chart. On the circle, measure the angle from the previously drawn line, and mark the segment.
- Repeat steps 2 and 3 for each category. Start each segment at the end of the previous one.
- In the end, you should have a completely filled circle graph with visualized percentages.

### Does a pie chart have to equal 100?

Yes. A pie chart is a way to show categories in a data set (so parts of a specific total). The total value of the data set is always equal to 100%, and each category is a fraction of that data.