Your emissions, roughly, in a few steps.
A quick estimate — for your company or your home. We cover energy (electricity, gas, vehicles) and, with a few more questions, part of Scope 3: staff commuting and business travel, always from known factors. The rest of the value chain (purchases, materials) we map with you in the demo, from your data.
If you don’t know your kWh, we estimate energy from area and building type.
It’s on your annual bill, or multiply the monthly one by 12.
We estimate commuting: employees × distance × 2 × ~220 days, by car.
A rough sum of the team’s flight km in a year.
Used to estimate the rest of Scope 3 (purchases) from your sector’s intensity.
Pick a country and enter your annual electricity to see the estimate.
We multiply your electricity by your country’s grid intensity factor, and gas, transport, water and waste by standard per-unit factors. If you don’t know your kWh, we estimate energy from floor area. The rest of Scope 3 (purchases) is a spend-based sector estimate. All client-side — your data never leaves your browser.
Indicative, rounded factors from open sources. By country (global): grid intensity and per-capita benchmark (Ember / Our World in Data). Physics, global: gas, transport, water (DEFRA/DESNZ). EU/US-derived, used as a proxy elsewhere: building kWh/m² (ENERGY STAR / Eurostat), waste (Eurostat / EPA) and sector intensity for purchases (US EPA USEEIO). Replace with an authoritative factor library before any reporting use.
A rough estimate, not a measurement. Your real figure depends on your energy mix and operation — we confirm it in the demo.
Frequently asked questions
Is the carbon footprint calculator free?
Yes, and no sign-up. It runs instantly in your browser — nothing is sent without your consent.
How do you calculate the carbon footprint?
We multiply energy by your country’s grid intensity and other usage by published factors (DEFRA, Ember, EPA). The rest of Scope 3 (purchases) is estimated from your sector’s intensity.
Does it cover all of Scope 3?
No. It covers energy (Scope 1 and 2) and part of Scope 3 (commuting, travel, water, waste). Purchased goods and services and use of sold products — often the largest slice — we map with you in the demo.
Does it work for any country?
Yes. Grid intensity and the per-capita benchmark are per country (Ember / Our World in Data); fuel factors are global.