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WTW vs TTW calculator for transport emissions
Compare Tank-to-Wheel and Well-to-Wheel values with cautious assumptions and links to methodology examples.
WTW vs TTW estimate
Use this only to explain the concept. Fuel-specific lifecycle factors are needed for production calculations.
Audience
Teams explaining transport emissions boundaries to customers, procurement, and sustainability reviewers.
Problem
TTW-only figures often omit fuel production emissions and can be misunderstood when compared with WTW reporting.
Product fit
LogisticsAI keeps WTW and TTW context visible inside evidence packs and methodology statements.
What TTW covers
Tank-to-Wheel covers emissions from fuel use in the vehicle. It does not include upstream fuel production or delivery.
What WTW covers
Well-to-Wheel includes TTW plus upstream fuel lifecycle emissions. ISO 14083 aligned workflows need clear boundary documentation.
Explore the evidence workflow
Frequently asked questions
Can I convert TTW to WTW exactly?
Not exactly without fuel and lifecycle factor detail. This page gives a directional estimate only.
Which value should be shared?
Share the value requested by the customer and include the boundary, factor source, and assumptions.
Related resources
Move from content to workflow
Use the public samples and tools to evaluate the workflow, then create a workspace or request async follow-up when real shipment data is ready.