Calculadora de Gráfico de Pizza
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
° = valor / total × 360
About this calculator
This pie chart calculator converts your numerical data into angles for each slice. The formula used is: angle = (individual value / total) × 360 degrees. Thus, you get the exact proportion of each category represented in the full circle.
Pie charts are ideal for showing compositions, such as budgets, opinion polls, or vote distribution. Use them when the data adds up to a meaningful total and categories are mutually exclusive. For example, to visualize each product's share in total sales.
Cautions: avoid too many categories (more than 5-6 slices can clutter the chart). Ensure values are positive and the total is not zero. Remember: pie charts compare proportions, not absolute values. Use with data that sums to 100%.
Results are presented in degrees and percentages, making interpretation easy. The calculator is useful for students, marketing professionals, and anyone who needs to create visual reports quickly.
Frequently asked questions
What if the total of my values is zero?
The calculator won't work because division by zero is impossible. Check your data and correct the values.
Can I use negative values?
No, pie charts represent proportions of a whole, so all values must be positive.
How many categories can I enter?
We recommend at most 6 categories to maintain readability. Too many slices make the chart confusing.
How do I interpret the generated angles?
Each angle corresponds to a slice in the circle. For example, 90° represents one quarter of the total (25%).
Does the calculator show percentages?
Yes, in addition to angles in degrees, you will see the percentage of each slice relative to the total.