How to Create a Histogram on Histogram Maker

Updated

Histogram Maker (histogrammaker.net) lets you turn a list of numbers or a CSV/Excel file into a downloadable histogram in a few steps: enter or import your data, set the chart and axis titles, pick a histogram type, then generate and download the result as PNG, JPEG, or SVG. You don't need to install anything — it runs in the browser on desktop and mobile. The steps below follow the tool's own interface.

Step 1: Enter or import your data

You have two ways to get data in:

  • Manual entry — type values into the "Enter Values" field, separated by spaces or commas (for example, 12, 15, 15, 18, 22 or 12 15 15 18 22).
  • File import — use the Import CSV/Excel File option to load a dataset instead of typing it.

If you're unsure which to use: manual entry is fine for a short list you can paste in; file import is the practical choice when your data already lives in a spreadsheet.

Step 2: Set titles and chart options

Before generating, fill in the labeling fields so the chart is readable on its own:

  • Chart Title
  • X-Axis Title
  • Y-Axis Title

Then choose the Histogram Type. The tool offers three:

Type What it shows
Count Frequency of data points per bin
Probability Density Distribution normalized so the area reflects probability
Cumulative Running total up to each bin

Pick Count if you just want to see how many values fall in each range. Use Probability Density or Cumulative when your analysis needs a normalized or running-total view.

Step 3: Adjust bins and appearance

  • Bin Size — leave it empty to let the tool calculate an automatic bin size, or enter a custom value to control the interval width yourself.
  • Bar Gap — a slider from 0 to 0.9 controls the spacing between bars.
  • Colors — set the histogram bar color, background color, title color, and axis text color.

If you're not sure about bin size, start with it empty and see whether the automatic result reads clearly; only set a custom size if the default bins are too wide or too narrow for your data.

Step 4: Generate and download

Click Generate Histogram to render the chart. Once it appears, download it in whichever format fits your use:

  • PNG — good for slides, documents, and general sharing
  • JPEG — smaller file for quick sharing
  • SVG — vector format that stays sharp when resized, best for reports and print

Common points to check

  • If the chart looks empty or wrong, confirm your values are separated by spaces or commas and contain no stray text.
  • If bars are hard to distinguish, adjust Bin Size or the Bar Gap slider.
  • If axis labels are missing, go back and fill in the X-Axis and Y-Axis Title fields before regenerating.

The tool is described as working on both desktop and mobile, so you can complete the same steps on either.