Built for anyone who
works with data
Radar Chart Maker is a free browser-based tool that turns numbers into clear, visual spider charts — no design skills, no signup required.
Data visualization shouldn’t require a design degree or a software subscription.
Our mission
Why we built this
Radar charts are one of the most useful visualization types for comparing multi-variable data — but most tools that make them either require an account, hide the export behind a paywall, or bury the feature inside a complex design platform.
We built Radar Chart Maker to solve exactly that friction. Open the page, enter your data, click generate. That’s it. No registration flow, no credit card, no watermark on your output.
The tool runs entirely in your browser, which means your data never leaves your device. We think that matters — especially when the data you’re charting is internal, sensitive, or proprietary.
A radar chart generated entirely in your browser
What we stand for
Free by default
Core chart creation — entering data, customizing, previewing — is and will remain free. No trial period, no feature lock after a certain number of uses.
Speed over complexity
The tool is intentionally simple. We’ve cut every step that isn’t necessary to produce a good chart. Fast tools get used; complex tools get abandoned.
Privacy by design
All rendering happens in your browser. We have no technical ability to read your chart data — it never touches our infrastructure.
Who uses Radar Chart Maker
Students & educators
Rubric-based assessments, geography fieldwork, academic presentations — radar charts are a staple in education and this tool makes them accessible without any software setup.
Analysts & researchers
Quick profile visualization during exploratory analysis, before committing to a full BI tool. Generate a chart, screenshot it, move on.
Business & product teams
Competitive analysis slides, product feature comparisons, employee performance reviews — radar charts are a reliable choice for multi-attribute comparisons in presentations.
Sports analysts & scouts
Player profiles across multiple performance dimensions. Overlay two athletes on the same chart and the comparison becomes instantly readable for any audience.
🔒 Our privacy promise
The chart builder uses only the HTML5 Canvas API and plain JavaScript. When you type values into the tool, those numbers are stored temporarily in your browser’s memory and used to draw the polygon on the canvas. They are never serialized, never sent over a network request, never logged.
When you export your chart, the image is generated locally using canvas.toBlob() and downloaded directly to your device. There is no server involved in that process at any point.
We believe tools that handle potentially sensitive data — internal KPIs, employee scores, confidential product metrics — have a responsibility to be explicit about this. So we are: your data stays on your device, full stop.
Ready to make your chart?
No account, no download — open the builder and start plotting in seconds.
Build My Radar Chart →Free · No sign-up · Works on any device