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Global Priorities

Strategic goals

  • Every Flight is Safe and Secure
  • Aviation is Environmentally Sustainable
  • • CORSIA
  • • State Action Plans for Aviation CO2 Reduction
  • • Finvest Hub
  • Aviation Delivers Seamless, Accessible, and Reliable Mobility for All
  • No Country Left Behind
  • • Capacity Development and Implementation Support
  • The International Civil Aviation Convention and Other Treaties, Laws and Regulations Address All Challenges
  • The Economic Development of Air Transport Assures the Delivery of Economic Prosperity and Societal Well-Being for All

Enablers

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  • Next Generation Aviation Professionals
  • Gender Equality
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  • IATA-UPU-ICAO Webinar 2026
  • Global Aviation Gender Summit 2026
  • Twenty-First Symposium and Exhibition on the ICAO Traveller Identification Programme (TRIP)
  • ICAO/EASA Third Global RSOO/RAIO Forum for Aviation Safety

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Resources

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  • ICAO Partnership Programme
  • ICAO API Data Service
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  • Air Transport Monthly Monitor
  • Compendium: Competition Policies/Practices
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  • Unmanned Aviation
  • ICAO GIS Aviation Data
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About ICAO
About ICAO
  • Overview
  • Strategic Plan 2026-2050
  • Latest News and Highlights
  • FAQs
  • List - ICAO Member States
  • ICAO Museum
  • ICAO Carbon Calculator
  • Report Misconduct
  • Contact ICAO
Diplomatic Bodies
  • ICAO Assembly (193 States)
  • Sessions of the Assembly
  • Resolutions in Force
  • ICAO Council (36 States)
  • President of the Council
  • Sessions of the Council
  • Council State Representatives
  • Air Navigation Commission
ICAO Secretariat
  • Secretary General
  • Air Navigation Bureau
  • Air Transport Bureau
  • Capacity Development and Implementation Bureau
  • Legal Affairs and External Relations Bureau
  • Administration Bureau
  • Regional Offices
Global Priorities
Strategic Goals
  • Every Flight is Safe and Secure
  • Aviation is Environmentally Sustainable
  • • CORSIA
  • • State Action Plans for Aviation CO2 Reduction
  • • Finvest Hub
  • Aviation Delivers Seamless, Accessible, and Reliable Mobility for All
  • No Country Left Behind
  • • Capacity Development and Implementation Support
  • The International Civil Aviation Convention and Other Treaties, Laws and Regulations Address All Challenges
  • The Economic Development of Air Transport Assures the Delivery of Economic Prosperity and Societal Well-Being for All
Enablers
  • ICAO Continuous Improvement
  • Innovation in Aviation
  • Next Generation Aviation Professionals
  • Gender Equality
  • ICAO Global Ambassadors Programme
  • ICAO Training
  • Partnerships and Resource Mobilization
Events
Featured Events
  • IATA-UPU-ICAO Webinar 2026
  • Global Aviation Gender Summit 2026
  • Twenty-First Symposium and Exhibition on the ICAO Traveller Identification Programme (TRIP)
  • ICAO/EASA Third Global RSOO/RAIO Forum for Aviation Safety
Event Information
  • Host your Event at ICAO
  • View the full list of Coming and Past Meetings & Events
Resources
Resources
  • ICAO E-Library
  • Publications
  • Annual Reports of the Council
  • Safety Audit Results - Interactive
  • Aviation Benefits Report
  • Economic Facts and Figures
  • Global Aviation Safety Plan
  • Safety Reports
  • Global Air Navigation Plan
  • Air Navigation Reports
  • ICAO Partnership Programme
  • ICAO API Data Service
  • ICAO Data+
  • ICAO iSTARS
  • Air Transport Monthly Monitor
  • Compendium: Competition Policies/Practices
  • Economic Analyses and Forecasting
  • Databases and Studies
  • Environment Reports
  • Environment Publications
  • ICAO TRIP Strategy Compendium
  • Unmanned Aviation
  • ICAO GIS Aviation Data
Procurement
Careers
Featured Articles
ICAO TV
ICAO store
Subscribe
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  1. Homepage
  2. Environmental Protection
  3. Environmental Tools
  • ENV Protection home
  • ENV Tools home
Carbon Emissions Calculator
  • ICEC web
  • ICEC for United Nations
  • ICEC API
  • Methodology
  • ICEC FAQ
Green Meeting Calculator
  • IGMC web
  • IGMC API
Fuel Savings Estimation Tool
  • IFSET web
Environmental Benefits Tool
SAP e-learning course
Eco-Airport Toolkit
Marginal Abatement Cost Curve
CORSIA CERT
  • Contact us

ICAO Environmental Tools (ENV Tools)

ICAO develops and maintains many environmental tools that are made available to States and the general public. These tools support the development of State Action Plans, the implementation of the Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA) and support initiatives to reduce aviation's carbon footprint.

 

Tool

Description

Applicable for

ICAO Carbon Emissions Calculator (ICEC)
ICAO has developed a methodology to calculate the carbon dioxide emissions from air travel for use in offset programmes.
 
For additional information, please access the ICEC Portal.
 
  • ICAO Member States
  • State Action Plan development
  • General public
  • International Organizations
     
ICAO Green Meetings Calculator (IGMC)
 

The ICAO Green Meetings Calculator (IGMC) is a tool designed to support decision-making in reducing the carbon emissions from air travel to attend meetings.

For more information, please access the IGMC portal. 
 

  • ICAO Member States
  • General public
  • International Organizations


 

ICAO Fuel Savings Estimation Tool (IFSET)

Operational measures are one of the instruments available to States to improve fuel efficiency and reduce CO2 emissions. 

For more information, please access the IFSET portal.

  • ICAO Member States
  • State Action Plan development
  • General public
  • International Organizations
Environmental Benefits Tool (EBT)
 

The EBT was created to support States with the development of their State Action Plan. 

For more information, please access the EBT portal.

  • State Action Plan development
Marginal Abatement Cost (MAC) Curve Tool

This tool was developed to support States with the process of selecting mitigation measures as a part of the State Action Plan development process. 

For more information, please access the MAC Curve Portal.

  • State Action Plan development
ICAO E-Learning Course on State Action Plans

The ICAO E-Learning Course on State Action Plans aims to build an understanding of the importance of States' Action Plans to address CO2 emissions from the international aviation sector.

The course has been developed by the United Nations Institute for Training and Research (UNITAR) in collaboration with ICAO.

Access to the tool is available here.

 

  • ICAO Member States
  • State Action Plan development
  • International Organizations
Eco-Airport Toolkit E-Collection 

The objective of the Eco-Airport Toolkit e-collection is to provide practical and ready-to-use information to support the development of airport infrastructure projects. The themes of the publications are chosen based on immediate operational needs of ICAO Member States. Each publication focuses on a specific aspect of environmental planning at airports.

Access to this E-Collection is available here.

  • ICAO Member States
  • Airport planning and design
  • International Organizations
ICAO CORSIA CO2 Estimation and Reporting Tool (CERT)
 

The ICAO CORSIA CERT is one of the five ICAO CORSIA Implementation Elements and is reflected in the ICAO document entitled "ICAO CORSIA CO2 Estimation and Reporting Tool", referenced in Annex 16, Volume IV.

The ICAO CORSIA CERT supports aeroplane operators in fulfilling their monitoring and reporting requirements in CORSIA by populating the standardized Emissions Monitoring Plan and Emissions Report templates. More details on CERT can be found here.

  • ICAO Member States
  • Aeroplane Operators
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