Free widget

Add a live CO₂ counter to your website

Q: Can I show the counter on a big screen or in a presentation?

Yes. Choose a widget and theme, then select Open full screen. The numbers grow to fill the window, so you can show it on a projector or TV, or share that browser window in a video call.

Show global CO₂ emissions rising, or the 1.5 °C carbon budget running out, on your school page, blog, report or event screen. Copy one line of code.

Free
No sign-up
No cookies or tracking
Works on phones

Get the code

Widget

Theme

Embed code

Open full screen

Who uses it

Classrooms

Open a lesson on climate change with a number students can watch grow.

Blogs and newsrooms

Put the scale of global emissions right next to your climate story.

Sustainability pages

Set your organisation’s targets against the global picture.

Events and screens

Run it full screen at talks, exhibitions and climate events.

Add it to your site in a minute

Copy the code above, then:

WordPress: Add a Custom HTML block, paste the code and update the page.
Wix: Choose Add Elements → Embed Code → Embed HTML, select Code and paste.
Squarespace: Add a Code block, paste the code and save.
Google Sites: Choose Insert → Embed → Embed code, paste, then insert.
Any other site: Paste the code into the page’s HTML where the counter should appear.
Slides and screens: Select Open full screen and show that browser window. The numbers grow to fit.

Some free website plans block embed code. If the counter doesn’t appear, check your plan’s embed settings.

How it works

CO₂ counter: CO₂ emitted worldwide so far this year, using the Global Carbon Budget 2025 figure of 42.2 billion tonnes a year (about 1,338 tonnes per second).
Carbon budget: CO₂ the world can still emit for a 50% chance of keeping warming to 1.5 °C. It starts from 170 billion tonnes on 1 January 2026 (Global Carbon Budget 2025) and counts down at today’s rate.
Both are estimates spread evenly over time, not live measurements. See how the counter works.
Resizes to fit: works from about 260 px wide. A height of 160–180 px fits best.
No cookies, no analytics, no third-party scripts, and calm motion for visitors who prefer reduced motion.

Please keep the credit link. It’s how the counter stays free, and it lets your readers explore the full data, including emissions by country.

Questions and answers

Is the CO₂ counter widget free?

Yes. Both widgets are free for any website, including schools, blogs, businesses and non-profits. Please keep the small credit link.

Does the widget track visitors or use cookies?

No. The widget is a small static page with a few lines of JavaScript. It sets no cookies and loads no analytics or third-party scripts.

Where do the widget’s numbers come from?

Both widgets use the Global Carbon Budget 2025. The counter spreads its estimate of 42.2 billion tonnes of CO₂ a year (fossil fuels plus land-use change) evenly over the year: about 1,338 tonnes per second. The carbon budget countdown starts from 170 billion tonnes left on 1 January 2026, for a 50% chance of keeping warming to 1.5 °C, and counts down at the same rate.

Can I show the counter on a big screen or in a presentation?

Yes. Choose a widget and theme, then select Open full screen. The numbers grow to fill the window, so you can show it on a projector or TV, or share that browser window in a video call.