Use a dot plot
Choose a dot plot when you want readers to see every observation. Repeated values stack vertically, so exact values, small clusters, gaps, and unusual points remain visible.
Dot Plot Maker
Create a dot plot from raw numeric observations in seconds. This online dot plot maker stacks repeated values, supports paste, CSV, and Excel, and requires no signup.
- Free to use
- No watermark
- No signup
- Data stays in your browser
Graph editor
Loading your locally saved graph…
How to make a dot plot
- 1
Add raw observations
Enter one numeric value per row, paste a spreadsheet column, or upload a CSV or Excel file.
- 2
Review the stacked dots
Confirm that repeated values stack vertically and use Customize to choose a series or adjust dot size.
- 3
Label and export
Use the real column header for the title and axis, then download the dot plot as PNG or SVG.
What is a dot plot?
A dot plot places each raw numeric observation on a number line. When a value occurs more than once, its dots stack vertically to show the frequency without hiding any observations.
The horizontal axis uses true numeric spacing, so the visual distance between 12 and 14 is twice the distance between 14 and 15. This makes a dot plot useful for inspecting exact values in a small or medium-sized dataset.
Example dot plot data
These 20 sample observations each become one dot. Repeated values stack into visible frequency columns.
| Value |
|---|
| 12 |
| 14 |
| 14 |
| 15 |
| 15 |
| 15 |
| 16 |
| 17 |
| 17 |
| 18 |
| 18 |
| 18 |
| 18 |
| 19 |
| 20 |
| 20 |
| 21 |
| 22 |
| 22 |
| 24 |
Dot Plot vs Histogram
Both charts show a numeric distribution, but they preserve different levels of detail.
Use a histogram
Choose a histogram for a larger dataset when grouped intervals communicate the overall distribution more clearly than individual observations.
When to use a dot plot
A dot plot generator is most useful when exact observations still matter and the dataset is small enough to read point by point.
Compare repeated measurements
See which scores, durations, or measured values occur most often without grouping them into bins.
Find gaps and clusters
Spot concentrations, empty ranges, and isolated observations along a true numeric scale.
Teach distributions
Show students how individual observations build a frequency distribution while keeping the raw values visible.
Dot plot maker features
Repeated-value stacking
Display every observation while stacking duplicate numeric values by frequency.
True numeric spacing
Position dots on a continuous numeric X-axis instead of evenly spaced categories.
Series selection
Choose one numeric column in Customize when the dataset contains several series.
Compatibility guidance
Get a clear explanation and a better chart recommendation when the data is categorical, time-based, or paired XY data.
Spreadsheet imports
Paste values or import CSV and Excel files through the shared graph editor.
Local save and export
Save on this device and export the finished dot plot as PNG, SVG, or CSV.
Related graph makers
Dot plot maker FAQ
Answers about observations, repeated values, imports, and series selection.
Is this dot plot maker free?
Yes. This free dot plot maker works online without signup and exports clean PNG and SVG files without a watermark.
What data works best in a dot plot?
Use one numeric column of raw observations. Each row becomes one dot, and repeated numbers stack vertically.
How are repeated values displayed?
Every repeated observation receives the same horizontal position and the next available vertical stack position. In the sample, 4 occurrences of 18 appear as 4 dots above 18.
Can I choose between multiple numeric columns?
Yes. The dot plot creator uses the first numeric series by default and lets you choose another series inside Customize. Columns are never merged silently.
Can I paste data or upload Excel and CSV files?
Yes. Paste a spreadsheet column or upload CSV and Excel files. Your data is processed locally in the browser.