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Pie Chart Maker

Turn a list of labels and values into a clean pie chart and download it as a PNG — right in your browser.

Privacy: your files never leave your device. All processing happens locally in your browser.

How to use

  1. 1.Enter your data in the box, one item per line as "Label, Value" — for example "Chrome, 63".
  2. 2.Watch the pie chart redraw instantly, with each slice colored and a legend showing values and percentages.
  3. 3.Optionally add a chart title, then click Download to save the chart as a PNG image.

About Pie Chart Maker

Pie Chart Maker turns a simple list of labels and values into a finished, color-coded pie chart you can download as a PNG image. There is no sign-up, no software to install, and no waiting on a server: you type your data, the chart redraws instantly, and when it looks right you save the picture. It is built for the everyday moments when you need one clear chart fast — a slide for a meeting, a figure for a report, a screenshot for a message, or a quick sanity check on how a total splits across categories.

Using it takes three steps. First, enter your data one item per line in the format "Label, Value" — for example "Chrome, 63" on one line and "Safari, 20" on the next. Second, add an optional title that appears above the chart. Third, download the PNG. As you type, each slice is sized by its share of the total, given a distinct color from a built-in palette, and listed in a legend that shows the label, the raw value, and the percentage. You do not have to calculate percentages yourself; the tool works them out from the numbers you provide, so the slices always add up to the whole.

The input is deliberately forgiving. Blank lines are ignored, extra spaces around labels and numbers are trimmed, and any line that does not contain a valid non-negative number is simply skipped rather than breaking the chart. Because labels are read up to the last comma on a line, a category name that itself contains a comma still works. That means you can paste a rough column copied from a spreadsheet or a note and get a usable chart without cleaning it up first. Values can be whole numbers or decimals, and a value of zero is accepted — it just produces a slice with no visible width.

Everything happens locally. The chart is drawn on an HTML canvas inside your own browser tab using only the numbers you enter, and the downloaded PNG is generated on your device. Your data is never sent anywhere, which makes the tool safe for figures you would rather not upload — internal metrics, budgets, survey results, or anything confidential. It also means the tool keeps working with no network round-trip, so redraws feel immediate even as you tweak the numbers.

A few practical tips help you get the most from it. Pie charts read best with a small number of slices, so group tiny categories into an "Other" row when you have many. Order your rows from largest to smallest for a cleaner look, since slices are drawn in the order you list them starting from the top. Keep labels short so the legend stays tidy, and use the title to state what the whole represents. When you are happy, the PNG downloads with a white background and crisp edges, ready to drop into a document, deck, or chat. It is a fast, private way to go from a list of numbers to a shareable chart.

Frequently asked questions

Is my data uploaded to a server?
No. The chart is drawn entirely on your device using an HTML canvas inside your browser, and the PNG is generated locally. Nothing you type is ever sent anywhere, so it is safe to use with confidential numbers.
What format should my data be in?
Put one item per line as "Label, Value", such as "Safari, 20". Blank lines and extra spaces are ignored, and any line without a valid non-negative number is skipped. Labels may contain commas because the value is read from the last comma on the line.
How are the percentages calculated?
Each slice's percentage is its value divided by the sum of all values, so the slices always add up to 100%. You only enter the raw numbers; the tool computes the shares and sizes every slice accordingly.
Can I download the chart?
Yes. Once your data produces a chart, a download link appears that saves it as a PNG image with a white background, ready to drop into a slide, document, or message.

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