Website Carbon Calculator
Measure your website's carbon footprint — enter a URL to see its emissions per page view.
| What is it | Measure your website's carbon footprint — enter a URL to see its emissions per page view. |
|---|---|
| Pricing | Contact for Pricing |
| Free tier | Yes |
| Platform | Web Application |
| Best for | measuring website environmental impact, comparing carbon footprint against industry average |
| Domain registered | 2017 |
Data updated Aug. 1, 2026
What does Website Carbon Calculator do?
Website Carbon Calculator is a free online tool that estimates the carbon emissions generated by web pages. You simply enter a website URL, and it calculates how much CO2 is produced each time someone views that page. The tool uses version 4 of the Sustainable Web Design Model methodology, which considers factors like data transfer, energy intensity of web data, carbon intensity of electricity, and device usage patterns.
The calculator provides clear metrics showing grams of CO2 per page view and compares your results against the global average of 0.36 grams. It also showcases examples of energy-efficient websites that have achieved low carbon footprints through optimized design choices like compressed images, efficient file formats, and lightweight fonts. The tool is hosted on renewable energy servers, practicing what it preaches about sustainable web operations.
This tool is particularly valuable for web developers, digital agencies, and sustainability managers who want to measure and reduce their digital carbon footprint. It helps identify opportunities to make websites more energy-efficient while raising awareness about the environmental impact of internet usage, which consumes more electricity than entire countries like the United Kingdom.
Key features
What makes it stand outWho is Website Carbon Calculator for?
Who benefits most from this toolPricing
Free tier available — start without a credit cardWebsite Carbon Badge
- Automatic carbon calculation
- Dark theme option
- Light theme option
- Display on website footer
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