Free Histogram Maker
Create histograms online. Paste raw values or a frequency table, adjust settings, and download for free.
How to Make a Histogram (3 Steps)
- Paste raw values, or paste a frequency table with a Value column and one or more group columns
- For raw values, adjust bins (3–50). For frequency tables, each group column is drawn side-by-side.
- Save your histogram as PNG, SVG, or PDF — free, with no watermark added
How to Make a Histogram in Excel
In Excel, select your data, go to Insert → Charts → Statistical → Histogram. You can adjust bin width by right-clicking the X axis and selecting “Format Axis.” For more control over bin count or Y axis type, this online tool is faster.
How to Make a Histogram in Google Sheets
In Google Sheets, select your data column, then click Insert → Chart. In the Chart Editor, change the chart type to “Histogram.” Under “Customize → Histogram,” you can set the bucket size (bin width). Google Sheets automatically calculates bin count from the bucket size — divide your data range by your desired bin count to find the right value. For direct control over bin count, this online histogram maker lets you drag a slider from 3 to 50 bins.
Histogram vs Bar Chart
Histograms show the distribution of continuous numerical data — bars touch because there are no gaps between bins. Bar charts compare discrete categories with gaps between bars. Use a histogram for things like test scores, heights, or response times; use a bar chart for sales by region or votes by candidate.
FAQ
How many bins should I use?
A common rule is the square root of n (your sample size). For 100 values, try ~10 bins. Too few bins hide the shape; too many create noise.
What is frequency vs density?
Frequency is count ÷ total values (bars sum to 1). Density is frequency ÷ bin width — useful when comparing histograms with different bin widths.
Can I export for a report?
Yes — PNG at 2× resolution for presentations, PDF for printable output.
Related Tools
- Line Graph Maker — Track ordered values and changes over time.
Related Guides
- What Is a Histogram? — Definition, anatomy, distribution shapes, and when histograms beat bar charts.
- How to Make a Histogram Online — Step-by-step guide to using this tool with bin count tips.
- How to Make a Histogram in Excel — Built-in chart type and Analysis ToolPak methods.
- How to Make a Histogram in Google Sheets — Step-by-step guide with bucket size tips.
- Bar Chart vs Histogram — Why they look similar but answer completely different questions.
- Histogram vs Box Plot vs Dot Plot — Which distribution chart to use for your data.
Further Reading
- Wikipedia: Histogram — Comprehensive overview including Sturges' rule (1926) for choosing bin count.
- Khan Academy: Histograms Review — Approachable introduction to reading and creating histograms.
- NIST Engineering Statistics Handbook: Histograms — Authoritative reference on histogram construction and interpretation for data analysis.
- Wikipedia: Freedman–Diaconis Rule — The statistically robust method for optimal bin width selection based on IQR.