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CSV Chart Builder

Upload or paste CSV data, map columns, and generate clean charts in one click.

CSV Input

First row should contain column names. Comma-separated CSV is supported.
Preview appears here after parsing CSV.

Chart Builder

For pie chart, values from the selected value column are summed by label.

About CSV Chart Builder

CSV Chart Builder helps you quickly visualize tabular data without spreadsheets or BI tools. Upload a CSV file or paste raw CSV, select your columns, and render bar, line, or pie charts instantly in your browser.

How to Use

  1. Click Upload CSV or paste CSV data into the text area.
  2. Select the Label Column (X-axis / slice labels) from the dropdown.
  3. Select the Value Column (numeric data to plot).
  4. Choose a chart type: Bar, Line, or Pie.
  5. Click Build Chart — the chart renders instantly.
  6. Click Download PNG to save the chart image.

How It Works

The tool parses your CSV using JavaScript, maps the selected columns, and renders the chart using the Chart.js library directly in the browser. No data is ever uploaded to a server.

Example

Paste a CSV with columns Month,Revenue. Set Label Column to "Month" and Value Column to "Revenue", choose Bar chart, and click Build Chart to see monthly revenue trends instantly.

Frequently Asked Questions

Standard comma-separated CSV with a header row. The first row should contain column names. Values can be numbers or text depending on the column role.
This happens when the Value Column contains non-numeric data. Make sure the column you select as Value contains numbers only (no currency symbols or commas within numbers).
The tool works best with datasets up to a few thousand rows. Very large files may be slow to parse since all processing happens in your browser with no server support.
No. Your CSV data never leaves your browser. Everything is processed locally using JavaScript.