Self-contained, open-source demos of production calculators from GreenCalculus.com โ the traceable reference layer for corporate carbon accounting, built for sustainability officers, engineers, and CSRD compliance teams. Each demo below is a single HTML file: vanilla JavaScript, zero dependencies, built to GHG Protocol and IPCC AR6. Open the demo, or jump straight to the full live calculator.
The capstone: consolidate all three scopes into one auditable corporate inventory, with two grand totals (location-based & market-based), a scope-split bar, and the Scope 3 share โ the number most companies find dominates the footprint.
Convert fuel burned in owned or controlled equipment into tCOโe across 10 fuel types, with a full emission-factor breakdown. The foundational Scope 1 calculation.
Convert purchased electricity into tCOโe the way the GHG Protocol requires โ both at once: location-based on the grid factor, and market-based on your EAC, PPA or residual mix. See how certificates move one number and not the other.
Category 6 travel emissions across air, rail, road and hotel stays, with the radiative-forcing uplift for flights. A hub linking the full Scope 3 value-chain suite โ freight, commuting, waste, use of sold products and more across Categories 1โ14.
Build a science-based emissions trajectory with the Absolute Contraction Approach. Tests Scope 3 materiality, validates against the 4.2%/yr 1.5ยฐC floor, and projects a year-by-year reduction path.
Forest, Land & Agriculture emissions across land-use change, land management, and carbon removals โ reported as three separate lines per the GHG Protocol Land Sector Standard, with an SBTi FLAG 20% eligibility check.
One engine for all seven PCAF asset classes โ attribution factor = outstanding รท denominator, plus the auto-derived data-quality score (1โ5). A hub linking the full 10-calculator PCAF suite: listed equity, loans, real estate, mortgages, motor, sovereign, facilitated & insurance.
Price the carbon embedded in EU imports across the six CBAM goods โ cement, iron & steel, aluminium, fertilisers, hydrogen, electricity โ with the 2026โ2034 certificate phase-in and an origin carbon-price rebate. A hub linking the full climate disclosure & compliance suite: EU ETS, CSRD E1, IFRS S2, TCFD, CDP, SECR, SEC & more.
Split biomass and biofuel combustion into fossil COโe (counted in Scope 1) and biogenic COโ (reported separately as a memo item) โ the GHG Protocol rule that keeps bioenergy honest.
Direct emissions from ships and aircraft you own or control โ MGO, HFO, Jet A-1 and avgas โ with the aviation radiative-forcing memo. Your own operations, not Scope 3 travel.
Allocate a combined-heat-and-power plant's fuel emissions across its electricity and heat outputs with the GHG Protocol efficiency method โ the operator's Scope 1, the buyer's Scope 2.
Convert purchased steam and hot water into tCOโe on both a location-based and a supplier-specific market-based basis, with the supplier factor back-calculated from fuel + efficiency.
Apply the AIB / Green-e residual-mix factor to untracked electricity โ the correct market-based default for any load you haven't backed with certificates, avoiding double-counting.
Model how RECs, PPAs, VPPAs and onsite generation cut market-based Scope 2 โ matched volume counts as zero, the uncovered remainder reverts to the residual mix.
Convert purchased district heat and cooling into tCOโe on a location- and market-based basis โ networked district energy, complementary to the purchased steam calculator.