Statistics Tool
Pie Chart Creator
Create colorful Pie Charts.
Category A
40
Category B
30
Category C
30
Σ The Formula
Slice Angle = (Value / Total) × 360° | Percentage = (Value / Total) × 100%
Real World Examples
Budget Breakdown
Rent: 40%, Food: 30%, Savings: 30% → Visual proportion of expenses
Market Share
Company A: 50, Company B: 30, Company C: 20 → Shows relative market positions
Survey Results
Yes: 60, No: 30, Maybe: 10 → Instant visualization of opinion
Dietary Habits
Fruit: 300g, Veg: 400g, Meat: 200g → Proportional intake analysis
# About This Calculator
A Pie Chart (or Circle Chart) is a circular statistical graphic which is divided into slices to illustrate numerical proportion. In a pie chart, the arc length of each slice (and consequently its central angle and area) is proportional to the quantity it represents.
It is widely used in the business world and the mass media because it is easy to understand at a glance. It excels at showing how a "whole" is broken down into parts (e.g., how a budget is spent, or the market share of different companies).
Best Practices
- Limit Slices: Pie charts work best with 2-7 categories. If you have more, consider combining small slices into "Other" or using a Bar Chart.
- Order Matters: It's often helpful to order slices by size (largest to smallest) for easier reading.
- Different Colors: Ensure each slice has a distinct color to make them easily distinguishable.
How To Use
- Type a Category Name (e.g., "Rent").
- Type a Value (e.g., 1200).
- Click **Add**.
- Repeat for all your categories.
- The chart updates automatically to show the new proportions.
Frequently Asked Questions
When should I use a bar chart instead?+
If you have more than 7 categories, or if the values are very similar (making slices look identical), a bar chart is better. Bar charts are also better for comparing changes over time.
How are percentages calculated?+
The tool sums all your values to get a Total. Then for each slice: (Slice Value ÷ Total) × 100%.
Can I use this for survey results?+
Yes! Pie charts are perfect for survey responses like 'Yes/No/Maybe' where the result is a breakdown of the total respondents.
Why does the total need to be 100%?+
It doesn't! You can enter raw numbers (like 50 apples, 30 oranges). The tool treats the sum of all inputs as the 'Whole' (100%) and calculates the relative share for you.
What is a donut chart?+
It's essentially a pie chart with the center cut out. It functions identically but can look cleaner and offers space in the center for a total value or logo.
Is Pie Chart Creator free to use?+
Yes, Pie Chart Creator on Matheric is completely free to use. We believe in accessible education and utility for everyone.