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Bar Chart Maker — Free Stacked & Grouped CSV Bar Charts

Build bar charts from CSV — stacked, grouped, horizontal. Multi-series, PNG export, no upload.

Free No signup Client-side Privacy friendly Updated

How to use

  1. 1 Paste CSV with headers in the first row and labels in the first column.
  2. 2 Toggle stacked or horizontal to switch layout. Multiple data columns become side-by-side or stacked groups.
  3. 3 Download the rendered chart as PNG for slides or reports.

Why use this tool

  • Stacked and horizontal toggles — one tool covers grouped, stacked and side-bar layouts.
  • Chart.js loaded lazily — fast first paint, no upload.
  • Multi-series ready — every numeric column in your CSV becomes a separate bar series.
  • Quoted CSV cells supported, including commas and newlines inside fields.

Frequently asked questions

Need a different chart type?

Try the <a class="underline" href="/line-chart-maker">Line Chart Maker</a>, <a class="underline" href="/pie-chart-maker">Pie</a> or <a class="underline" href="/scatter-plot-maker">Scatter</a> tools — same CSV input.

How do I convert JSON to CSV first?

Use the <a class="underline" href="/csv-to-json">CSV / JSON converter</a> to flip your data into CSV, then paste it here.

Why are some bars missing?

Non-numeric cells become null and are skipped. Make sure your data columns contain plain numbers.

What is Bar Chart Maker?

A Bar Chart Maker is a tool that builds bar charts from CSV data inside the browser. It renders values as rectangular bars and supports stacked, grouped, and horizontal layouts with multiple data series. The finished chart can be exported as a PNG image, and all processing runs client-side with no file upload required.

Features

Multi-series bars from CSV columns

Every numeric column after the first becomes a separate bar dataset, each auto-assigned a distinct color from a 10-color palette; non-numeric cells are parsed as null and skipped.

Stacked and horizontal layout toggles

Checkboxes switch the chart between grouped and stacked bars (Chart.js scales.x/y.stacked) and between vertical and horizontal orientation (Chart.js indexAxis: 'x' | 'y').

One-click PNG export

Download renders the live canvas to a PNG data URL with canvas.toDataURL('image/png') and triggers a browser download — no server round-trip.

Client-side only, no upload

CSV parsing (RFC 4180-compliant, handles quoted fields with embedded commas/newlines) and Chart.js rendering both run in the browser; the CSV text never leaves the page.

Example

Input

Quarter,Revenue,Cost
Q1,42,30
Q2,55,33
Q3,61,40
Q4,78,48

Output

bar-chart-maker.png — canvas-sized PNG (matches the on-screen preview element, no fixed pixel dimensions), 2 bar series (Revenue, Cost) in grouped layout with a legend, colors #10b981 and #0ea5e9 at 70% fill opacity

Common use cases

  1. 1

    Quarterly revenue vs. cost comparison

    Paste Quarter,Revenue,Cost rows to get side-by-side or stacked bars comparing two metrics per period for a slide deck or report.

  2. 2

    Survey or category breakdowns

    Turn labeled counts (e.g. browser share, source of traffic) into a horizontal bar chart when category labels are long and don't fit on a vertical x-axis.

  3. 3

    Quick visual check before publishing a chart elsewhere

    Preview how multi-series CSV data looks as stacked or grouped bars before committing to the same structure in a BI tool or slide.

Summary

Bar Chart Maker turns pasted CSV text into a bar chart rendered with Chart.js 4 on an HTML canvas. Each numeric column after the first becomes its own data series, with toggles for stacked bars, horizontal orientation (indexAxis), and legend visibility, and the result can be exported as a PNG via canvas.toDataURL(). All CSV parsing and chart rendering happen client-side in the browser — no file is uploaded to a server.

Category
Creator
Pricing
Free
Privacy
Browser-based
Signup
Not required

References

Privacy

Your data never leaves your browser unless explicitly stated. Bar Chart Maker runs entirely client-side — no server upload, no logging, no tracking of your input.

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