Histogram Maker

Create a histogram from raw numeric data and inspect the shape of its distribution. Paste values or import CSV and Excel files, then export the result for free.

✓ Free
✓ No signup
✓ No watermark
✓ Data stays in your browser

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Data

Sample data


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Distribution of Scores

Detected: ScoreRecommended: Histogram chart

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How to make a histogram

1
Add raw observations
Enter one numeric value per row, or paste and import a spreadsheet column.
2
Review the bins
Use the automatic intervals or open Customize to select a different bin count.
3
Customize and export
Adjust labels, color, and grid visibility, then download the completed histogram.

What is a histogram?

A histogram displays the frequency distribution of numeric observations. Values are grouped into continuous intervals called bins, and the height of each touching bar shows how many observations fall in that range.

Unlike a bar graph, a histogram uses numeric ranges rather than separate named categories. The order and width of the intervals carry meaning, so the bars touch instead of appearing as independent columns.

This online histogram maker accepts pasted data plus CSV and Excel files, safely excludes invalid observations, and lets you review or adjust the automatic bin count before exporting.

Example histogram data

Place raw numeric observations in a column. Each row represents one measured value.

Score
72
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71

Histogram vs Box Plot

Both charts summarize raw numeric observations, but they answer different questions about a distribution.

Use a histogram

Use a histogram when the shape of one numeric distribution matters. Touching bars reveal concentrations, gaps, skew, and the frequency of value ranges.

Use a box plot

Use a box plot when you need a compact summary of median, quartiles, spread, and outliers, especially when comparing several groups.

When to use a histogram

Histograms are useful when you want to understand how numeric observations are distributed across a continuous range.

Inspect score distributions

See where test results or ratings are concentrated and whether the values are balanced or skewed.

Review measurements

Study variation in laboratory results, dimensions, durations, or other repeated measurements.

Spot gaps and unusual ranges

Find empty intervals, multiple peaks, or thin tails that deserve closer investigation.

How histogram bins work

A histogram groups nearby observations into intervals so the overall distribution is easier to see.

Automatic bin count

The editor chooses a practical number of bins from the number of valid observations.

Manual adjustment

Open Customize when you need to compare the same data with fewer or more intervals.

Frequency counts

Each bar reports how many observations fall inside its displayed numeric range.

Histogram maker features

Automatic bins

Generate a practical interval count based on the size of the dataset.

Adjustable intervals

Choose a manual bin count from Customize when a different level of detail is useful.

Safe data cleanup

Ignore blanks and clearly report non-numeric observations that were excluded.

Frequency tooltips

Inspect the numeric range and observation count represented by each bar.

Spreadsheet imports

Paste raw values or import them from CSV and Excel files through the shared editor.

Local save and export

Save the project on this device and export the finished histogram as PNG, SVG, or CSV.

Box Plot Maker

Summarize median, quartiles, spread, and outliers from raw numeric data.

Bar Graph Maker

Compare values across separate named categories instead of continuous ranges.

Scatter Plot Maker

Explore the relationship between two numeric measurements.

Histogram maker FAQ

Answers about raw observations, intervals, imports, and excluded values.

Is this histogram maker free?

Yes. You can create and export a histogram without signing up or adding a watermark.

What data should I enter?

Enter raw numeric observations in a column. Do not enter pre-counted categories unless you want a bar graph instead.

How are histogram bins selected?

The automatic setting uses the number of valid observations to choose a readable bin count. You can select a different count inside Customize.

What happens to blank or invalid cells?

Blank cells are ignored. Invalid non-numeric values are excluded and reported beside the chart so the source data can be corrected.

Can I import values from Excel or CSV?

Yes. Paste a spreadsheet column or upload CSV and XLSX files. Processing remains in your browser.