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 is a circular statistical graphic 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 one of the most common ways to visualize part-to-whole relationships. The entire circle represents 100% (or the total sum), and each slice represents a category's contribution to that total. They are widely used in business presentations, media, and school projects to show percentages at a glance.

Limitations: Pie charts can be hard to read if there are too many small slices or if the values are very similar (making slice sizes hard to distinguish). In such cases, a bar chart might be better.

This tool lets you easily add categories and values to generate a vibrant, proportional pie chart instantly. It automatically calculates the percentages and degrees for you.

How To Use

  1. Enter a Category Name (e.g., "Rent").
  2. Enter its Value (e.g., 500).
  3. Click Add. Repeat for all categories.
  4. Watch the chart build itself automatically.

Frequently Asked Questions

How is the angle of each slice calculated?+

Angle = (Value ÷ Total Value) × 360°. For example, if a category is 25% of the total, its angle is 0.25 × 360 = 90 degrees.

When should I use a pie chart?+

Use it when you want to compare parts of a whole (like budget allocation or market share). It's best with 3-7 categories. Avoid using it for changes over time.

Can I use percentages or raw numbers?+

You can use either! If you use raw numbers (like $500, $300), the tool sums them to find the total and calculates the percentage slice for each.

Why do statisticians sometimes dislike pie charts?+

Because human eyes are better at comparing lengths (bar charts) than angles/areas (pie charts). Small differences are harder to spot in a pie chart.

What is a 'Donut Chart'?+

It's simply a pie chart with a hole in the center. It functions the same way but has a modern look and space in the middle for a total label.

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.

About

A Pie Chart is a circular statistical graphic 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 one of the most common ways to visualize part-to-whole relationships. The entire circle represents 100% (or the total sum), and each slice represents a category's contribution to that total. They are widely used in business presentations, media, and school projects to show percentages at a glance.

Limitations: Pie charts can be hard to read if there are too many small slices or if the values are very similar (making slice sizes hard to distinguish). In such cases, a bar chart might be better.

This tool lets you easily add categories and values to generate a vibrant, proportional pie chart instantly. It automatically calculates the percentages and degrees for you.

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