Estimate your footprint using scientific data, then track your daily impact — built on peer-reviewed carbon data, designed for real people.
Why this one: country-specific factors from DEFRA / DESNZ (UK Greenhouse Gas Conversion Factors) and SU-EATABLE LIFE — 200+ granular activities, not a generic global average.
For businesses
Enter your bill of materials, site energy and packaging. Get a footprint per declared unit with every emission factor cited — free, printable, no account needed. CBAM mode available for steel, aluminium, cement, fertilisers and hydrogen.
How it works
Answer 4 quick steps about transport, home, food and lifestyle. We estimate your yearly footprint.
Understand where your impact comes from — transport, food, energy, goods — at a glance.
Log meals, trips and purchases in seconds. Watch your real impact unfold over time.
No account required
4 quick answers, a science-backed CO₂e number for your country.
Start calculationEstimate a T-shirt, a bottle, a phone — cradle-to-gate in minutes.
Estimate a productSave your work and access advanced tools
Log meals, trips and energy in seconds. Daily and weekly trends update live.
Create free accountBuild a defensible PCF aligned with ISO 14067 for CDP, CBAM and supplier questionnaires.
Open the ISO wizard30 seconds. No account needed to calculate.