Carbon Footprint

How much CO₂ did your browsing just produce? We estimate the emissions of this session from the data your browser transferred — live, in your browser, with no tracking.

0.0

grams CO₂ (session)

0.0

MB transferred

Estimate only. Uses the Performance API (bytes this page loaded) × an average network+datacentre energy intensity (~0.06 kWh/GB) × a grid carbon factor. Real emissions vary by region, device and CDN efficiency.

🌍 Why it matters

Every byte you load costs energy across networks and datacentres. Streaming an hour of 4K video is roughly 36g CO₂; an AI image generation is several times a web search. Small per-session, large at scale.

🧮 The method

CO₂ ≈ GB transferred × 0.06 kWh/GB × grid intensity (gCO₂/kWh). We pick a regional grid factor from your timezone, defaulting to the global average (~475 g/kWh).

♻️ Reduce it

Lower video resolution when you don't need 4K
Block autoplay & heavy ads
Reuse cached content
Prefer efficient, green-hosted sites