Histogram example
Start with raw numeric observations and let Vizvero group them into continuous bins.
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Free histogram maker & histogram generator
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See the shape of a numeric distribution
Understanding histogram
Use Vizvero as a free histogram maker and generator for raw numeric data. Paste one column of observations, start with automatic bins or choose the count yourself, switch between frequency and relative frequency, then style, animate, and export the chart.
A histogram, sometimes described as a histogram graph or histogram chart, shows the distribution of a numeric variable by grouping observations into continuous ranges called bins. Adjacent bars represent neighboring numeric intervals, so their position and continuity carry meaning.
In Frequency mode, bar height is the number of observations in each bin. Relative frequency uses the same bins but expresses each count as a share of all valid observations, making the Y axis and value labels percentages instead of counts.
Use this chart when
- You have raw observations from one numeric variable and want to see the shape of the distribution.
- You want to inspect concentration, skew, peaks, gaps, spread, or an approximately uniform or bell-shaped pattern.
- Grouping continuous values into intervals is more useful than comparing named categories.
Choose another chart when
- You are comparing named categories; use a bar chart.
- You need a compact summary of quartiles and potential outliers; use a box plot.
- You have two numeric variables and want to inspect their relationship; use a scatter plot.
Prepare your data
- 01Paste one numeric column; each valid cell is treated as one observation and Vizvero calculates the bins for you.
- 02Start with Auto bins for a stable default, then switch to Count when you want to test a specific number from 3 to 30.
- 03Use Frequency for absolute counts or Relative frequency when percentages are easier to compare or explain.
Editable examples
Histogram examples and layouts
See the layout with real sample data first, then open the exact example in this maker and replace the data with your own.
Four-step workflow
How to make a histogram in Vizvero
- STEP 1
Paste raw numeric values
Use one spreadsheet column or import a CSV containing the observations you want to distribute into bins.
- STEP 2
Choose automatic or manual bins
Start with Auto or switch to Count and test nearby bin counts until the structure is informative without becoming noisy.
- STEP 3
Choose frequency or relative frequency
Show absolute observation counts or switch the Y axis and value labels to percentages of the full sample.
- STEP 4
Style, animate, and export
Adjust labels, grid, theme, palette, background, and animation, then export PNG, SVG, or MP4.
Make the chart easier to read
- Try more than one bin count before drawing conclusions from the shape; bin boundaries can make a small sample look smoother or rougher.
- Read a long right tail as right or positive skew and a long left tail as left or negative skew; the direction refers to the tail, not where most values sit.
- A bell-shaped histogram can resemble a normal distribution, but appearance alone does not prove statistical normality.
- Use relative frequency when the percentage share in each interval matters more than the raw number of observations.
From data to finished asset
Designed themes
Change typography, spacing, geometry, axes, background, and palette without rebuilding the chart.
Static and animated export
Export the same chart scene as PNG, true vector SVG, or frame-rendered MP4.
Browser-first workflow
Editing and chart rendering happen in the browser, so you can work without creating an account.
Frequently asked questions
What is a histogram?
A histogram groups continuous numeric observations into adjacent intervals called bins. The height of each bar shows either the number of observations in that interval or their relative frequency.
What is the difference between a histogram and a bar chart?
A histogram uses adjacent bins on a continuous numeric scale. A bar chart compares separate named categories, so the spacing and order of its bars do not represent continuous numeric intervals.
What is a relative frequency histogram?
It shows each bin as a share of all valid observations rather than an absolute count. Vizvero calculates the percentages automatically and formats the Y axis and value labels as percentages.
How many bins should I use?
There is no single correct number. Start with Auto, then test nearby manual counts when you need more or less detail. A useful setting reveals structure without turning random variation into a story.
What do right-skewed and left-skewed histograms mean?
Right or positive skew has a longer tail toward larger values. Left or negative skew has a longer tail toward smaller values. Vizvero includes editable examples of both shapes.
Can I paste raw data instead of pre-counted bins?
Yes. Vizvero expects raw numeric observations and calculates bin ranges, frequencies, and relative frequencies for you.
Can I animate and download a histogram?
Yes. Histogram bins use Vizvero’s deterministic animation pipeline and can be exported as PNG, SVG, or MP4.
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