Free for suppliers — no credit card
Calculate once. Share with every customer.
The carbon footprint calculator built for the company answering the question, not the one asking it. Enter your data once. Get a Carbon Passport, a PPN 006 CRP, and exports for CDP, CSRD, and CBAM.
GHG Protocol aligned
UK DEFRA 2025 factors
PPN 006 CRP generator
CDP-compatible output
Three steps. Fifteen minutes.
1
Enter your data
Energy bills, fuel spend, business travel. Don't know your kWh? Enter your annual spend in £ — we convert it for you.
2
We calculate
Using official UK Government DEFRA emission factors. The same data used by the Big Four and every major framework.
3
Share your passport
One link for every customer. Plus a PPN 006 CRP, CDP export, and more.
Built for your sector
Construction
PPN 006 CRPs for public sector bids
Get started IT & Digital
G-Cloud and DOS framework requirements
Get started Food & Drink
Supermarket supply chain data requests
Get started Manufacturing
CBAM compliance for EU exports
Get started Professional Services
Accountancy, legal, and consulting firms
Get started Simple pricing. Start free.
Save 20%
Free
£0forever
For getting started
- Scope 1 & 2 calculations
- Basic Scope 3 (travel, waste, water)
- 1 Carbon Passport
- PPN 006 CRP generator
- Basic CSV export
- DEFRA emission factors
- Year-on-year comparison
- 1 delegate invite
Starter
£29/month
For growing businesses
- Everything in Free
- 3 Carbon Passports
- Company logo on passport
- Remove AtmosLedger branding
- "Verified" badge
- Passport view analytics
- 3 delegate invites
Most popular
Pro
£79/month
For compliance-focused teams
- Everything in Starter
- Unlimited passports
- Scope 3 Category 1 (spend-based)
- CDP & CSRD exports
- Reduction tracking & targets
- Market-based Scope 2
- 5 delegate invites
Business
£199/month
For advisors & enterprises
- Everything in Pro
- Multi-client advisor dashboard
- REST API access
- CBAM data pack
- Multi-site & group rollup
- Team access (5 users)
- Unlimited delegates
- Priority support (24h SLA)