#scope 1

Transparency is the only path to 1.5°C. At GreenCalculus, we believe that the integrity of a carbon inventory is only as strong as the architecture of the math behind it.

We are releasing the MasterBrain Visual Series: 9 high-fidelity blueprints deconstructing the most complex pillars of the GHG Protocol, SBTi, and IPCC AR6 frameworks. From the exponential decay logic of Near-Term Targets to the Tier 1 multipliers of AFOLU Nitrogen soil emissions, these models eliminate the "black box" of carbon accounting.

Built for architects, auditors, and sustainability leads who demand absolute mathematical provenance.

🖥️ Explore the Full Logic Suite: https://greencalculus.com/calculators/

The Collection Includes:

Scope 1: Stationary & Mobile Combustion Logic

Scope 1: Refrigerant GWP (AR5 vs AR6)

Scope 2: Dual-Reporting (Location vs Market)

Scope 3: Spend-Based Fallbacks & Air Travel Multipliers

Targets: SBTi 1.5°C Pathways & FLAG 20% Thresholds

AFOLU: N2O Synthesis & Soil Application Math

One leaked kilogram of SF₆ traps as much heat as 22,800 kg of CO₂.

Refrigerant leakage is the most carbon-dense line on almost any Scope 1 inventory — and the one most people get wrong. A single 12 kg air-conditioning chiller leaking at the standard 8% a year quietly emits the climate equivalent of driving a small car ~9,000 km. Unlike burning fuel, every gram that escapes goes straight to the atmosphere.

The catch: the "right" number isn't fixed. The IPCC revised its warming-potential values between AR5 and AR6, and for some refrigerants the answer shifts by up to 30% — with both versions still legally valid depending on what you're reporting against (EU CSRD, UK SECR, CDP).

We built a free calculator that handles all of it: 51 refrigerants, IPCC Tier 1 defaults, an AR5/AR6 toggle that tells you why your number moves, EU F-Gas phasedown flags, and a full audit trail you can stake a verification on.

Run your numbers → https://greencalculus.com/calculators/scope-1-refrigerant-leakage-calculator/

The same litre of diesel can land in three different places on your carbon inventory. Burned in a company van, it's Scope 1 mobile combustion. Burned in a fixed standby generator, it's Scope 1 stationary. Burned in a courier's own vehicle, it's Scope 3. The chemistry is identical — DEFRA's 2025 factor is 2.57082 kg CO₂e per litre either way — but the asset class decides the line, and misclassifying it is one of the most common Scope 1 audit findings.

This calculator runs the DEFRA 2025 factor set across all 15 mobile fuels — diesel, petrol, LPG, marine grades, aviation, CNG, LNG — and bundles the CO₂, methane, and nitrous oxide into a single CO₂e value automatically. Pick your fuel and unit basis (litres, tonnes, or kWh), enter the quantity, and it returns an audit-ready figure with the full calculation chain exportable for verification.

One genuinely useful detail it gets right: it inherits DEFRA's native AR5 GWP basis rather than silently "converting" to AR6, which keeps a single factor honest to its source even in an AR6 inventory.

Direct GHG emissions are only as reliable as the formulas that define them.

We’ve deconstructed the GHG Protocol Corporate Standard into a high-fidelity, audit-grade interface. This calculator normalizes the fundamental logic of $E = A \times EF \times OF$—integrating the latest DEFRA 2024 and IPCC AR6 emission factors into a single, transparent workflow.

No black boxes. Just pure, verified methodology for stationary combustion.

🖥️ Audit the Logic: Scope 1 Stationary Combustion Calculator