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Free calculator

Work out your company's carbon footprint

A customer, investor, or platform wants emissions numbers from your company, or you simply want to know where you stand. Answer plain questions about your business, and in about ten minutes you'll have a credible first estimate of your Scope 1, 2, and 3 emissions (that's the standard way emissions are grouped; we'll walk you through it).

Choose your country

What you get

  • Your company's emissions number, with the biggest contributors highlighted.
  • A PDF summary you can send to whoever asked.
  • A clear list of what to gather next, so your numbers hold up when someone wants proof.

Free. No payment details. Built on official government data.

Nine country versions

Choose your country

Every country's calculator runs on published government data.

Somewhere else? Any version gives you a solid starting point. We work with companies worldwide.

Where do the numbers come from?

Every calculation uses published government and public data sources. You can see the full list, check any number, and cite the dataset.

See the data behind the calculator

How accurate is this?

It's a strong first estimate, built from your real activity, and honest about what's estimated. Good enough to respond credibly today and to know where better data matters.

How the estimate works

What if someone is waiting on an answer?

If a customer, platform, or investor has asked you for emissions data, send us the request. We'll tell you what it actually needs before you commit to anything.

Send us the request

Questions before you start

01Is it really free?

Yes. There's nothing to pay and no trial. We ask for your name and work email before showing full results, and that's it.

02Do I need to be a sustainability expert?

No. The questions are about your business: electricity bills, fuel, travel, spending. Every question explains where to find the answer, and "don't know" is always an option.

03How long does it take?

About ten minutes. Faster if you have your utility bills or spend numbers nearby; you can also estimate now and refine later.

04Can I give the result to my customer or investor?

You get a PDF summary made for exactly that. It states clearly what the estimate covers and how it was calculated, so you're not overclaiming.

05What happens to my data?

We use your answers to calculate your result and to follow up about sustainability support. We don't publish them or share them with your customer. See our privacy policy.

Ten minutes to your first real number.

Pick your country and start. If you'd rather hand the whole thing over, send us the request instead.