Heatmap Online Tool

Create interactive heatmaps from your data with custom colors and dimensions. Upload CSV/Excel or enter data manually.

Request Feature / Support

8,024+

Total Calculations Run

< 15ms

Browser Execution Speed

100%

Client-Side Privacy

4.9 / 5.0

User Satisfaction

AI Web Tool Generator

Build Your Own Custom Web Calculator in Seconds

Type what tool or calculator you need below. Our AI will build it instantly for your site.

About This Tool

This Heatmap Online Tool allows you to transform numerical data into visual heatmaps for easy pattern recognition. Simply upload a CSV or Excel file with your data matrix, or manually enter values in a text area. Customize the color scheme (from cool blues to warm reds), adjust dimensions, and generate a high-quality heatmap visualization. The tool includes interactive features like hover details, click-to-edit values, and export options to PNG or CSV. Perfect for data analysis, presentations, and reports.

Save your calculation history with a free account

How to Use

Upload a CSV/Excel file with your data matrix or manually enter values in the text area.
Configure the heatmap settings: choose a color scheme, set row/column labels (optional).
Click 'Generate Heatmap' to create the visualization.
Interact with the heatmap: hover to see values, click cells to edit data.
Export your heatmap as PNG image or download the data as CSV.

Frequently Asked Questions

Find Quick Answers

What file formats are supported for data upload?

You can upload CSV files (comma-separated values) or Excel files (.xlsx, .xls). The data should be in a matrix format with numbers only.

Can I edit the heatmap after generating it?

Yes, you can click on any cell in the heatmap to edit its value. The visualization will update automatically.

How do I download the heatmap?

After generating, use the 'Export as PNG' button to download a high-resolution image, or 'Export Data as CSV' to get the numerical data.

Is there a limit to the data size?

The tool handles moderate-sized datasets efficiently. For very large matrices (e.g., over 100x100), performance may vary based on your browser.

Need to run multiple calculations?

Create a free account today to unlock unlimited daily runs, access advanced parameters, save your history, and request custom features.

Related Tools

Other useful calculators and utilities you might like

Spotify to MP3 Converter

Convert Spotify tracks and playlists to MP3 format instantly with our free online converter.

Road Distance Calculator

Calculate the driving distance and travel time between two addresses with our free online road dista...

Age Calculator

Calculate your exact age in years, months, and days from any birth date to any target date.

Currency Converter

Convert currencies instantly with real-time exchange rates and historical data support.

Your Feedback Matters

Help Us to Improve