Business travel is GHG Protocol Scope 3, Category 6 — emissions from employee
transport in vehicles not owned by the company. The activity method multiplies a travel amount by
a mode-specific factor — emissions = activity × factor — with a
radiative-forcing uplift for the non-CO₂ effects of flying at altitude. Pick a mode,
enter the trip, and roll it up across the whole value chain below.
Category 6 is one of the fifteen Scope 3 categories. Each calculator below runs the full activity- or spend-based methodology on GreenCalculus.com — with live emission factors, audit trails, and schema-aligned exports. The GHG Inventory Aggregator rolls Scope 1, 2 and all of these into one auditable total.
×1.9 multiplier to convert the CO₂e of a flight into a fuller climate
impact. It is optional under the GHG Protocol, so most companies report both with and without it — which
is why this demo lets you switch it on and off. Rail and road have no such uplift. Factors here are
illustrative DESNZ 2024 averages; the live tools use distance bands (domestic / short-haul / long-haul),
cabin class, and vehicle-specific factors.
The methodology, standards, definitions and related tools behind this calculator — all live on the platform.