Pie Chart Maker
Pie and donut charts with clear labels, percentages and an “Other” slice.
One slice per row: a label and a number (two columns, or “Rent: 18000” on each line).
Chart
Arrow keys move from value to value; up and down switch series; Escape hides the tooltip.
Chart data as a table
About the Pie Chart Maker
Type or paste a label and a number for each slice — Rent: 18000, or two columns copied from a spreadsheet — and get a pie or donut chart with the percentages worked out from your raw numbers. Labels sit outside the pie with leader lines that are spread apart so they never overlap, or inside the slices; small slices can be grouped into Other, and one slice can be pulled out to highlight it. A donut can show the total in its centre.
The tool also checks what a pie can honestly show: negative numbers (which cannot be parts of a whole) are left out and listed, labels that appear twice are added together, and you are warned when there are too many slices to compare. Download a sharp PNG or SVG; nothing is uploaded.
How to use it
- Type one slice per line (
Rent: 18000) or paste two columns — labels and numbers — into Your data. You can also open a CSV or Excel file. - Under Pie chart, check the label and value columns, and choose Pie or Donut.
- Choose where labels go (outside with lines, inside, or a legend) and what they show: name and percentage, value, or both.
- Optionally group small slices into “Other”, limit the number of slices, pull one slice out, or change the start angle and order.
- Add a title, pick colours and the number format (₹, lakh/crore, K/M), then download the PNG or SVG.
Examples
Rent: 18000 Groceries: 9500 Savings: 12000 Other: 1900
Rent 43.5%, Savings 29.0%, Groceries 22.9%, Other 4.6%
Each share is the value divided by the total (₹41,400), times 100. Slices are ordered largest first.
Group slices under 4% into “Other”
Brand E (4.4%) keeps its slice; Brands F–I (2.7%, 1.8%, 1.1%, 0.9%) become one “Other” slice of 6.5%
The Other slice lists its members in the tooltip and in the data table.
Three equal values, no decimals
34% + 33% + 33% = 100% (instead of 33% + 33% + 33% = 99%)
With “Make the percentages add up to 100%” ticked, rounding uses the largest-remainder method.
Common uses
- A household or project budget split by category.
- Survey answers where each person picked one option.
- Market share, sales mix or time spent per activity.
- Showing one part of a whole — pull that slice out to highlight it.
When a pie chart works — and when it does not
A pie shows parts of one whole that add up to 100%. It works best with a few slices (up to about 6–7) of clearly different sizes. People compare angles less accurately than lengths, so for many categories, close values or comparisons across groups or over time, a bar chart is easier to read — the Bar Graph Maker takes the same data.
Negative numbers cannot be parts of a whole, so they are left out (with a note), as are empty cells and zeros — and a “Total” row that adds up the other rows, which would otherwise fill half the pie. If a label appears more than once, its values are added together into one slice.
How the percentages are worked out
Each slice’s share is its value ÷ the total of all positive values × 100, and its angle is that share of 360°. Shares are rounded to the decimals you choose, so rounded shares can add up to 99.9% or 100.1%; tick Make the percentages add up to 100% to round with the largest-remainder (Hamilton) method, which gives the leftover units to the shares with the largest remainders. The exact values are always in Chart data as a table.
Labels that stay readable
Outside labels are placed at the height their slice points to and then pushed apart on each side until none overlap; if there is still not enough room, the smallest slices lose their labels first (hover or tap them, or group them into Other). On narrow screens labels move to a legend. Inside labels are shown only where they fit within the slice, in black or white — whichever contrasts more with the slice colour.
Limitations
- One pie per chart; to compare several groups, use the Bar Graph Maker (100% stacked bars).
- Slices are drawn flat — 3D pies distort the angles and are not offered.
- Very small slices (well under 1%) can be too thin to see; group them into “Other”.
Privacy
Everything happens in your browser. What you enter or open here is not uploaded or stored by MySmartCoPilot.
Frequently asked questions
How do I make a pie chart with percentages?
Enter the raw numbers — amounts, counts or hours — and the tool works out each slice’s percentage from the total. Choose Name and percent (the default) or Percent for the labels.
Do my numbers have to add up to 100?
No. Any positive numbers work: each slice is its share of their total. If your numbers already are percentages that add up to 100, the slices show those same percentages.
What is the difference between a pie chart and a donut chart?
Only the hole: a donut is a pie with its centre cut out, which leaves room for the total (or another label) in the middle. The slices’ angles are the same.
How do I combine small slices into “Other”?
Set Group slices under to a percentage (for example 3%) or At most … slices. A single small slice is never grouped on its own, since that would only hide its name.
Why are some of my rows missing from the pie?
Rows with negative numbers, zero or no number cannot be slices, and a “Total” row that is the sum of the other rows is left out. The notes under the chart say how many were left out and why.
Is my data private?
Yes. The chart is drawn in your browser and nothing is uploaded. A share link keeps the data inside the link after the “#”, which browsers never send to a server — anyone you give the link to can see the data.