Stop second-guessing your numbers. The Carbon Workbench gives project developers, consultants and corporates a single verified toolkit — from biochar yields to project feasibility to VCM pricing.
The tool suite
Not a consumer carbon footprint quiz. Professional tools for people who need to defend their numbers.
The full biomass → biochar → carbon → CO₂e chain in one tool. Adjust yield, moisture, permanence discount and process emissions. Instant sanity-check ratios so you know if your numbers are plausible before you present them.
Scope 1, 2 and 3 emissions for organisations. BSI PAS 2060 aligned. Breaks down your footprint by source and gives you an instant CarbonZero offset cost at Gold Standard pricing.
Model annual credit volumes, total revenue and simple ROI for any Gold Standard or Verra project. Feed in household count, credit price and project life — get a full P&L projection in seconds.
Try it now
No account needed. Try the two free tools below. Sign up to save your results and access Pro tools.
No black boxes
Every emission factor is sourced, every formula is documented. You can see exactly why you got the number you got — and change any input to stress-test scenarios.
What people say
"Finally a biochar calculator that shows its working. I can adjust every assumption and see exactly how the number changes. This is what we needed for Gold Standard submissions."
"The feasibility modeller saved us days of spreadsheet work. We used it to model three project scenarios before our board meeting. Paid for itself in the first hour."
"The footprint analyser is the first one I've seen that's BSI PAS 2060 aligned and doesn't cost a fortune. Perfect for the SME clients we work with."
Pricing
The free tier is genuinely useful — not a crippled demo. Upgrade to Pro when you need the full suite.
How we compare
Versus generic spreadsheets, expensive enterprise software, or tools not built for carbon project work.
| Feature | Carbon Workbench | Spreadsheet | Enterprise GHG software |
|---|---|---|---|
| Gold Standard methodology | ✓ | — | ✓ |
| Biochar carbon chain | ✓ | — | — |
| Project feasibility modelling | ✓ | Manual | — |
| VCM credit price tracker | ✓ | — | — |
| Free tier | ✓ | ✓ | — |
| Starting price | £0 | £0 | £500+/mo |
FAQ
Everything you need to know before getting started.
All calculations use emission factors from IPCC AR6, UK DESNZ 2024, and Gold Standard approved databases. The biochar methodology is aligned with Puro.earth and Gold Standard permanence requirements. These are estimation tools — for formal credit issuance you'll still need independent verification.
The Carbon Workbench uses Gold Standard aligned methodology and is a strong starting point for project planning and feasibility. For formal submissions, you'll need a registered auditor to verify final numbers — but our tools will get you to the right ballpark quickly.
The full Biochar Carbon Calculator and Carbon Footprint Analyser — both complete, not crippled. No time limit, no credit card required. Upgrade to Pro when you need feasibility modelling, the cookstove estimator, credit pricing or PDF exports.
Yes — cancel any time from your account. No long-term commitment. You keep Pro access until the end of your billing period.
Yes — Enterprise at £299/month includes unlimited team seats, white-label reports, ESOS audit tools and a dedicated account manager. Email hello@thecarbonworkbench.com to discuss.
We update emission factors annually in line with UK DESNZ guidance and IPCC updates. Pro users are notified when factors change so you can rerun affected calculations.
Free to start. No credit card. Upgrade when you're ready.
The Carbon Workbench — Professional carbon tools, free to start.