Free Logistics CO2 Carbon Footprint Calculator
Free Logistics CO2 Carbon Footprint Calculator
GLEC-Based, ISO 14083-Aligned Freight Emissions Estimate
Estimate freight emissions with a GLEC-based, ISO 14083-aligned WTW methodology. Calculate indicative CO2e emissions for road, rail, sea, and air freight using shipment weight, distance, transport mode, and transparent default emission factors.
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Freight Emissions Estimate
GLEC-based default-factor estimate | WTW | Version 2026.04
Select a transport mode and enter shipment details to generate an indicative estimate.
Result details
Methodology note
This tool calculates transport activity as shipment weight x distance, then applies a versioned default emission intensity factor for the selected transport mode. Results are WTW estimates and include WTT and TTW components where available.
Estimate details
Methodology: This tool calculates transport activity as shipment weight x distance, then applies a versioned default emission intensity factor for the selected transport mode. Results are WTW estimates and include WTT and TTW components where available.
Limitations of this estimate
This calculator uses default emission factors unless primary carrier data is provided. Results are indicative estimates, not independently verified emissions reports. Actual emissions may vary depending on vehicle type, load factor, routing, fuel type, carrier operations, and data quality.
- Not a certified emissions report
- Not a replacement for carrier-verified primary data
- Not suitable as a standalone audit document
- Useful for early-stage estimates, ESG preparation, supplier questionnaires, and freight comparisons
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Free Logistics CO2 Carbon Footprint Calculator for Practical Freight Decisions
The Free Logistics CO2 Carbon Footprint Calculator is built to give logistics teams a transparent, indicative freight emissions estimate without overstating compliance claims. It uses a GLEC-based, ISO 14083-aligned estimate approach with a deterministic calculation engine, visible WTW, WTT and TTW outputs, and versioned default factors so users can understand how the result was produced.
This makes the tool useful for ESG reporting, supplier questionnaires, freight procurement, customer sustainability requests, internal carbon tracking, and early ISO 14083 readiness. It is designed to support ISO 14083-aligned reporting concepts, but it should not be presented as a certified or independently verified emissions statement.
The calculator applies versioned default emission factors by transport mode and clearly presents the result as a default-factor estimate.
Results show total WTW emissions with WTT and TTW components where available, plus transport activity and emission intensity.
Use the estimate for internal carbon tracking, early client responses, freight comparisons, supplier screening, and sustainability planning.
How this freight emissions estimate works
The method is deterministic. Transport activity is calculated as shipment mass in tonnes multiplied by distance in kilometers. The tool then applies a versioned default emission intensity factor for the selected mode. Where WTT and TTW factor components exist, they are shown separately and rolled up into a WTW total.
Because the result is based on default factors, it is best understood as an indicative logistics emissions estimate. It helps teams compare options and prepare reporting inputs, but actual emissions can vary due to routing, fuel pathway, asset type, operational assumptions, and data quality.
Where this tool is useful
This calculator is well suited to early-stage sustainability analysis across freight procurement, customer reporting requests, internal logistics reviews, ESG preparation, supplier questionnaires, and broader decarbonization planning. It gives teams a consistent baseline when primary carrier data is not yet available.
Frequently Asked Questions
Instantly calculate your supply chain greenhouse gas emissions with our free logistics carbon footprint calculator.
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