How is website carbon calculated?

We measure the page weight in bytes, convert to GB, multiply by energy intensity (0.194 kWh/GB), then by grid carbon intensity (494 gCO2/kWh). Green hosting reduces emissions by 24.3%.

What is the carbon badge?

An embeddable SVG badge you can add to your website to publicly display your carbon score. Pro and Business plans include the embeddable badge.

Yes — the basic scanner is completely free with no signup required. Free users get 1 page scan per request. Pro plans unlock 50-page scans and the embeddable badge.

Baserat på SWDM v4-metodiken

Hur mycket CO₂ släpper din webbplats ut?

Q: What is Carbon Badge?

Carbon Badge is a free tool that measures the CO2 emissions of any website using the Sustainable Web Design Model (SWDM) v4, giving a grade from A (cleanest) to F.

Q: What is Ecoping and how does Carbon Badge compare?

Ecoping was a website carbon emissions monitoring tool that has stopped accepting new users. Carbon Badge is a free, actively maintained Ecoping alternative: instant scan with no signup, SWDM v4 methodology, embeddable SVG badge, and a clear A–F grading system.

Q: How does Carbon Badge compare to Ecoping?

Both Carbon Badge and Ecoping measure website carbon emissions. Carbon Badge uses the SWDM v4 methodology with real-time scanning and provides an embeddable badge. Unlike Ecoping, Carbon Badge offers a free instant scan with no account required and is actively maintained with new signups open.

Omedelbar skanning av koldioxidavtryck. Betyg A–F. Kontroll av grön hosting. Inbäddningsbart märke. Gratis, ingen registrering krävs.

Hur det fungerar

Tre steg från URL till märke på under 10 sekunder

Ange din URL

Klistra in valfri offentlig webbplats-URL. Vi hämtar sidan och mäter dess överföringsstorlek i bytes.

Få ditt CO₂-betyg

Vi beräknar gram CO₂ per sidvisning med SWDM v4 och tilldelar ett betyg från A (utmärkt) till F.

Bädda in ditt märke

Pro-användare får ett inbäddningsbart SVG-märke som automatiskt uppdateras vid varje ny skanning.

Allt du behöver

En komplett verktygslåda för att mäta och minska ditt digitala koldioxidavtryck

SWDM v4-metodik

Använder branschstandarden Sustainable Web Design Model: 0.194 kWh/GB × 494 gCO₂/kWh.

Betyg A–F

Omedelbart bokstavsbetyg så att besökare förstår ditt carbon-resultat på ett ögonblick.

Inbäddningsbart märke

Ett live SVG-märke som du kan klistra in i din webbplats sidfot. Återspeglar automatiskt din senaste skanning.

Automatisk övervakning

Vi skannar om din domän varje vecka eller dagligen och varnar dig när ditt betyg förändras.

Kontroll av grön hosting

Vi frågar Green Web Foundation-databasen för att verifiera om din host använder förnybar energi.

API-åtkomst

Business- och Enterprise-planer inkluderar ett fullständigt REST API för integration i CI/CD-pipelines.

Förstå betygen

Poäng anges i gram CO₂ per sidvisning, baserat på en enskild sidladdning

Excellent < 0.15g CO₂ per pageview

Good 0.15 – 0.30g CO₂ per pageview

Average 0.30 – 0.50g CO₂ per pageview

Poor 0.50 – 0.75g CO₂ per pageview

Bad 0.75 – 1.00g CO₂ per pageview

Very Bad > 1.00g CO₂ per pageview

0.5g

Average web page CO₂ (HTTPArchive 2023)

494

gCO₂/kWh world grid intensity (Ember 2023)

SWDM v4

Methodology used by Website Carbon Calculator

Börja minska ditt webb-koldioxidavtryck

Gratis skanning tar 10 sekunder. Ingen registrering, inget kreditkort.

Skanna din webbplats Visa priser

Carbon Badge vs Ecoping: Website Carbon Footprint Tools

Carbon Badge is a free website carbon footprint scanner that uses the Sustainable Web Design Model (SWDM) v4 to measure CO2 emissions per pageview — and a free, actively maintained Ecoping alternative.

Ecoping has stopped accepting new users. Carbon Badge picks up where Ecoping left off: instant results with no signup, A–F grading, green hosting detection, and an embeddable SVG badge to display your carbon score publicly.

Free instant scan — no account needed, open to everyone
SWDM v4 methodology — same as Website Carbon Calculator
Green hosting detection — checks the Green Web Foundation database
Embeddable badge — display your score on your website footer
A–F grading system — clear, actionable results at a glance
API access — integrate carbon checks into your CI/CD pipeline

Vanliga frågor

What is Carbon Badge?

Carbon Badge measures the CO2 emissions of any web page using the Sustainable Web Design Model (SWDM) v4 — the same methodology used by Website Carbon Calculator. Enter any URL and instantly get a grade from A to F with actionable recommendations.

How is website carbon footprint calculated?

We measure the transfer size of a page in bytes, convert to gigabytes, then apply: CO2 = GB × 0.194 kWh/GB × 494 gCO2/kWh. If the site uses green hosting, we apply a 24.3% reduction factor. The 0.194 kWh/GB covers data centres, networks, and end-user devices.

What does "green hosting" mean?

Green hosting providers power their servers with renewable energy. We check each domain against the Green Web Foundation database of verified green hosts. Green-hosted sites get a better CO2 score because their grid is cleaner.

Is the scanner really free?

Yes — the basic single-page scan is free with no account needed. Pro plans (from €9/mo) unlock multi-page scans, the embeddable badge, and automatic monitoring.

Can I display a badge on my website?

Yes. Pro and Business plan subscribers get an embeddable SVG badge that updates automatically. Just paste one line of HTML into your site footer.

What is Ecoping?

Ecoping was a website carbon footprint monitoring tool that calculated an EcoScore out of 100 using the Sustainable Web Design method. Ecoping has since stopped accepting new users. Carbon Badge is a free, actively maintained Ecoping alternative — with instant scans, no signup required, and an open embeddable badge system.

How does Carbon Badge compare to Ecoping?

Both tools measure website carbon emissions, but Carbon Badge uses the SWDM v4 methodology and offers instant, free scans with no account needed. Carbon Badge also provides an embeddable SVG badge and an A-to-F grading system. Unlike Ecoping — which has shut down new registrations — Carbon Badge is actively maintained and free for everyone to use.

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Measure your full environmental impact beyond websites.

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