Histogram Maker

How to make a histogram online?

Paste numbers into the data box or upload a CSV/TXT file. HistogramMaker.app reads commas, spaces, tabs, semicolons, and line breaks, so data copied from a spreadsheet, lab notebook, survey export, or server log usually works without cleanup. If a CSV has more than one numeric column, pick the column you want to plot.Choose a binning method, then check the preview before exporting.

What is a histogram?

A histogram shows the distribution of numeric data. It groups values into adjacent intervals called bins and draws one bar for each interval. The bar height can show count, relative frequency, density, cumulative count, or cumulative percentage.Use a histogram when you need to see shape, spread, center, skew, and unusual values quickly.

How to choose bin size?

No bin size works for every histogram. Too few bins can hide structure. Too many bins can make random noise look meaningful. Freedman-Diaconis is a good starting point for skewed data and outliers because it uses the interquartile range. Scott often works better when the data are closer to normal.

How to export a histogram for papers and reports?

For journals, use SVG or PDF when the submission system accepts vector files. Text, axes, and bars stay sharp when the figure is resized. If the journal requires raster art, export PNG at 300 DPI or higher and choose dimensions that match the target column width.