Free Bubble Chart Maker — Plot Three Variables, Download Instantly
A bubble chart puts three variables on one picture: two set the position, the third sets the size. Reach for it when your table has a natural "how big" column — revenue vs. margin with units sold, or spend vs. conversions with audience size. Bubble size is drawn by area, not diameter, so a value twice as large really does look twice as big.
| Month | Product A | Product B |
|---|---|---|
Position is X and Y. Add a third numeric column to vary the bubble size.
Not sure which chart fits? Pick by what you want to show.
Every thumbnail below is drawn from your data — click one to switch. A ★ marks a type that suits this data.
Compare values
Which one is bigger, and by how much?
Change over time
How has it moved, and where is it heading?
Parts of a whole
What is the total made of?
Relationships
Do these things move together?
Distribution
How are the values spread out?
How it works
- Paste a table whose first column names each item and whose next two columns are numbers (X and Y).
- Add a third numeric column and it becomes the bubble size — leave it out and every bubble is the same size.
- Check the axis labels: they are taken from your column headers.
- Download a 2× PNG for a slide, or the .xlsx to keep editing the numbers in Excel or WPS.
Frequently asked questions
How many columns do I need for a bubble chart?
Three numeric columns: the first two set X and Y, the third sets the size. Two columns also work — you get evenly sized bubbles, which is just a scatter plot.
Why do bubbles look bigger than the numbers suggest?
We scale by area, which is the honest way to do it: a value four times larger gets a bubble four times the area. That is why the diameter only doubles.
Can I download the bubble chart as an Excel file?
Yes. The .xlsx download contains a native Excel bubble chart plus your original data, so you can change a number and the chart updates.
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