Every calculator, free to use
Fourteen tools for carbon projects and company footprints. No account needed to run any of them. Pay only if you want a branded report at the end.
Nothing here is locked. Every calculator runs in full without signing in. An account saves your work and groups it into a project; a report is £29 when you want one.
For companies
Reporting and reductionBusiness carbon footprint
Scope 1, 2 and 3 for an organisation, using UK DESNZ factors. Both Scope 2 methods stated.
Net zero pathway planner
Model a reduction trajectory to a target year, with the residual that needs removals.
Credit price tracker
Observed price ranges by project type and standard, with the date each was recorded.
For carbon project developers
Feasibility and issuanceBiochar carbon removal
Biomass to net removal, with every deduction itemised: process, logistics, permanence, crediting haircut.
Cookstove emission reductions
Household fuel savings with an fNRB factor, across a distribution programme.
Safe water
Emission reductions from displaced boiling, with suppressed demand handled explicitly.
Borehole rehabilitation
Safe water access with uptime and downtime deductions applied to issuance.
Forestry and ARR
Sequestration by hectare and species type, after buffer pool and leakage.
Solar displaced emissions
Generation against a grid emission factor, with the additionality question flagged.
Project feasibility
Revenue against setup and operating cost, with breakeven and the price it depends on.
Validation and verification cost
What a VVB and registry will charge, by standard and project size.
For anyone
Quick answersCO2e converter
Convert between gases, units and common equivalents.
Personal carbon score
A household footprint in a few minutes, against the UK average.
Pension climate impact
The financed emissions behind a pension pot, often larger than everything else combined.