Double Radar Chart Maker
Compare two data sets on a single radar chart for easy analysis.
Export Chart
What is a Radar Chart?
Also known as a spider chart or star chart, a radar chart is a unique visualization tool designed to display multi-dimensional data. Instead of plotting data on a standard X and Y axis, radar charts plot data points on multiple axes starting from a central point.
When the data points are connected by a line, it forms a shape that instantly communicates "balance" or "strengths." If the shape is large and symmetrical, the subject is well-rounded. If it spikes heavily in one direction, it indicates a distinct specialization or weakness.
This chart is particularly effective when you are comparing variables that use the same scale (like scores from 1-100 or ratings from 1-5). With our free radar chart generator, you can build these visualizations in seconds right in your web browser.
How to Create a Radar Chart
- 1Set your variables. Enter your categories in the "Data Entry" section. These will form the spokes of your radar. Usually, you want between 4 and 8 categories for a readable chart.
- 2Input your scores. Give your series a name and enter the corresponding values for each category. Ensure your values are on a consistent scale so the shape makes logical sense.
- 3Style and export. Adjust the fill opacity so the grid remains visible underneath. Toggle markers on or off, select your colors, and download the chart as a high-quality PNG or vector SVG file.
Best Use Cases
Skills Assessment
Evaluate employees or candidates across multiple competencies (e.g., Coding, Communication, Leadership). It instantly reveals a person's specific skill profile.
Sports Analytics
Compare athletes across different performance metrics like speed, strength, agility, and stamina. Widely used in video games and sports broadcasting.
Product Comparison
Compare two or more products across various features (price, durability, battery life, design) to see which offers the best overall value.
Software Evaluation
Rate different software tools based on security, ease of use, integrations, customer support, and pricing to make purchasing decisions.
Gap Analysis
Plot an individual's current skills against the required skills for a role to visually identify areas needing training or improvement.
Quality Control
Measure manufactured items against various quality standards to ensure consistency across multiple manufacturing dimensions.
Tips for Better Spider Charts
- Keep scales consistent. All axes on a radar chart share the same grid rings. If one variable is measured from 1-10 and another from 1-1000, the chart will break. Normalize all your data to a common scale (e.g., percentages or a 1-10 rating).
- Limit your categories. A radar chart with 3 axes looks like a triangle. One with 20 axes looks like a circle and is impossible to read. The sweet spot is usually between 5 and 8 categories.
- Order matters. The order in which you input your categories determines the shape. Placing related categories next to each other can create a more meaningful and readable polygon shape.
- Use transparency. If you plan to add multiple series to the chart later, ensure your fill opacity is set low (around 20-30%) so overlapping shapes don't obscure the data behind them.
Frequently Asked Questions
How do I format data for Excel import?+
When using the "Import Excel" feature, format your spreadsheet with categories in Row 1 (e.g., A1: Speed, B1: Strength, C1: Agility) and your data values in Row 2 directly underneath them.
Can I change the grid background?+
Yes, you can toggle the internal grid lines and alternating shaded polygons on or off using the "Show Grid" checkbox in the "Colors & Styling" section.
Why does my chart look weird?+
This usually happens when your data isn't normalized. If you have values like 5, 8, 7, and 500, the "500" value will stretch the axis so far that the smaller numbers collapse into the center. Ensure all values are measured on the same relative scale.
Is this tool really free?+
Yes. There are no paywalls, watermarks, or account requirements. You can generate and download as many high-resolution charts as you need.
Explore More Chart Tools
Radar charts offer a compelling way to visualize multi-variable data, making them indispensable for HR assessments, product comparisons, and performance reviews. With this browser-based tool, you can skip complex spreadsheet formatting and create beautiful, client-ready spider charts in just a few clicks.