Tools
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.
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.
How this fits your work
- 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.
- What LogisticsAI can do
- LogisticsAI keeps WTW and TTW context visible inside evidence packs and methodology statements.
Related guides and tools
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
See the next step
Open a prepared example or check a sample file. If this task comes up regularly, tell us how your team handles it and we can outline the next step.