Free · Show uncertainty

Error Bar Chart Maker

Plot measured values with plus-or-minus error bars so uncertainty stays visible beside each result.

  • Live interactive chart
  • Data stays in this tab
  • PNG, SVG, and Plotly JSON

Build the data plot

Use the example or paste local CSV. Nothing is uploaded.

CSV dataexample.csv
Headings: x · y · error · series (optional)103 / 1,000,000 characters
8 points in 2 traces are ready to explore.Drag to zoom. Double-click to reset.
Rows8
Plotted8
Traces2
Warnings0
Starting the interactive plotPlotly is loading in this browser tab.

Three simple steps

How to use it

  1. Use the example or paste your own x, y, and error columns.
  2. Check the interactive plot and change its title or colours.
  3. Download a PNG, SVG, or reusable Plotly JSON file.

Your formulas and data stay on this device

Plotly.js and Papa Parse draw the graph inside this browser tab. Bookify does not upload or save the table. Formula tools use a small math parser, not code evaluation. Close the tab and the working copy is gone.