Carbon Footprint Calculator
Every emission factor here is an input, not a claim.
Work out Carbon Footprint. Every emission factor here is an input, not a claim. Names the misconception directly.
CO₂e per year
9 t
4.5 t per person · Flights is the largest at 28%
Every factor above is an input rather than a constant, because none of them are stable. Grid carbon intensity has moved faster than almost any number in public policy — the same kWh emits a fraction of what it did a decade ago in some countries and several times more in others. Flight figures vary enormously between methodologies. Some include radiative forcing at altitude, which roughly doubles the number; some do not, and few say which. A footprint quoted without that is not comparable to one that includes it. This reports a total and deliberately attaches no verdict. What counts as a good footprint depends entirely on the comparison, and comparisons to national averages largely measure income rather than choices.
How the Carbon Footprint Calculator works
Household emissions from electricity, gas, driving, flights, diet and everything else, broken down by share with the largest identified. It reports a total and deliberately attaches no verdict to it.
Also known as: what is my carbon footprint · household co2 emissions per year · carbon footprint per person · how much co2 does flying produce
Frequently asked questions
Why are the emission factors editable?
Because none of them are stable. Grid carbon intensity has moved faster than almost any number in public policy — the same kWh emits a fraction of what it did a decade ago in some countries and several times more in others.
What is a typical carbon footprint?
It varies by more than tenfold between countries, and comparisons to a national average largely measure income rather than choices. That is why this page reports a total without grading it.
Why do flight figures vary so much between calculators?
Some include radiative forcing at altitude, which roughly doubles the number, and some do not. Few say which, so two footprints are rarely comparable.
What should I change first?
Whatever the breakdown shows as largest. If one category is over half the total, changes elsewhere barely move the number — the arithmetic decides the priority, not the guilt.
How many trees offset a tonne of CO₂?
At around 22 kg a year for a mature tree, roughly 45 tree-years per tonne. The figure varies enormously with species, age and climate, which is why it is an input here.
Put this calculator on your own site
Free to use, on any site, commercial or not. Paste this where you want it to appear. It is a plain iframe, so it works in WordPress, Squarespace, Wix, Webflow, Ghost and anything else that accepts HTML.
<iframe src="https://www.thecalclibrary.com/embed/carbon-footprint-calculator" width="100%" height="640" style="border:1px solid #e2e8f0;border-radius:12px" loading="lazy" title="Carbon Footprint Calculator"></iframe>
<p style="font:13px/1.5 system-ui,sans-serif;margin:6px 0 0;color:#64748b">Powered by <a href="https://www.thecalclibrary.com/carbon-footprint-calculator" style="color:#64748b">Carbon Footprint Calculator</a> from The Calc Library</p>The only condition is that the credit line below the frame stays in place. That one line is what pays for the tool being free — it is how anyone else finds it.