Star Chart Generator — Radar and Spider Charts

Create radar and spider charts instantly. Compare multivariate data visually for skills assessments, stats analysis, and performance reviews for free.

Data (Label, Value per line)

Example: Quality,4

Quality4

Speed3

Comfort5

Support2

Value4

How this Star Chart works

This astronomical tool renders a map of the night sky for a specific date, time, and location. Users input their city or coordinates, and the tool calculates the positions of stars, constellations, and planets visible at that moment. Useful for education, stargazing planning, or creating custom "star map" gifts. It relies on precise celestial mechanics algorithms to project the 3D sky onto a 2D map relative to the observer's horizon.

Multi-Metric Visualization

Compare multiple variables at once with radar/spider charts. Perfect for skills assessments, product comparisons, game stats, and performance reviews. See strengths and weaknesses at a glance with this powerful visualization.

Radar Visualization

Star Chart Features

100% Private

Your data stays in your browser. No uploads, no tracking.

Multiple Axes

Compare 3-8 variables on a single radial grid for comprehensive analysis.

Compare Profiles

Overlay multiple data sets to see how they stack up against each other.

SVG Export

Download high-quality SVG files for presentations and reports.

How this Star Chart Generator — Radar and Spider Charts works

The Star Chart Generator runs entirely in your browser using JavaScript. Unlike other tools that send your data to a server, we process everything locally on your device. This guarantees 100% privacy and blazing fast speed.

No server interaction – data never leaves your device
Instant results since there is no network latency
Works offline once the page is loaded
Free to use with no usage limits

How to Use

Input

Enter or paste your content into the input field.

Action

Click the primary button to generate or format.

Result

Copy your result immediately from the output box.

Frequently Asked Questions

What does a Star Chart Generator do?

Also called radar or spider charts, star charts display multivariate data on a radial grid. They are great for comparing profiles, skills, or performance across multiple categories.

When should I use a star chart?

Use star charts when you have 3-8 variables and want to compare one or more entities across all of them. Common uses include skill assessments, product comparisons, and sports analytics.

How many axes can I include?

For readability, stick to 3-8 axes. Too many axes make the chart crowded and hard to interpret. If you have more variables, consider grouping or using a different chart type.

Is this Star Chart Generator private?

Yes. It runs 100% client-side, so your data stays in your browser and is never uploaded to any server.

Related Tools

The Star Chart Generator is maintained by CodeItBro. We aim to provide the best free developer tools on the web. If you have feedback or suggestions, please visit our contact page.

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