Climate and Energy Modeling and Calculation Tools
Comprehensive tool collection for greenhouse gas calculation, modeling and climate analysis. Search for tools by sector, software type and functionality.
Individual and Consumer Tools
7 tools
Carbon Footprint Calculator
Quick calculator for households and small businesses covering transport, energy, and purchases; includes carbon offsetting options.
ClimateHero Carbon Calculator
User-friendly online carbon calculator for travel, home, and consumption emissions; offers mitigation suggestions.
myclimate CO2 Calculator
myclimate's CO2 calculator for estimating personal and travel emissions; offers mitigation and offsetting options.
WWF Footprint Calculator
WWF's carbon, water, and ecological footprint calculator.
UN Carbon Footprint Calculator
UN Environment Programme's carbon footprint calculator for individuals and organizations.
Conservation International Carbon Calculator
Conservation International's comprehensive calculator for lifestyle carbon; offers reduction tips and offsetting options.
EPA Personal Emissions Calculator
US EPA's household carbon footprint calculator covering energy, transportation, and waste components.
Business and Corporate Tools
6 tools
GHG Protocol Calculation Tools
Excel tools and guidance for common categories for Scope 1–3 accounting; aligned with GHG Protocol.
Carbon Trust Footprint Calculator
Web-based estimation tool generating report-ready outputs for corporate footprints.
CDP Reporting Platform
Global disclosure system for companies to manage environmental risks and opportunities.
SBTi Target Setting Tool
Science Based Targets initiative guides and tools for corporate climate target setting.
Microsoft Sustainability Calculator
Cloud-based sustainability reporting and carbon tracking tool.
IBM Environmental Intelligence
AI-powered environmental risk assessment and sustainability analytics.
Government, Policy and MRV
5 tools
IPCC Inventory Software
Tier 1–3 worksheets and QA/QC features by source categories for national inventory compilation.
IEA Energy Statistics
Comprehensive energy data and statistics for policy analysis and energy planning.
Climate Policy Initiative Tools
Policy analysis tools and frameworks for climate finance and mitigation strategies.
NDC Partnership
Global partnership providing tools and technical assistance for Nationally Determined Contributions (NDC) implementation.
Climate Action Tracker
Independent scientific analysis tracking government climate actions and commitments.
Buildings and Energy
8 tools
EPA ENERGY STAR Portfolio Manager
Tool for benchmarking and tracking building energy intensity and emissions with a 1–100 scoring system.
TIMES (ETSAP)
Linear optimization framework for long-term energy system planning.
RETScreen
Clean energy project feasibility assessment and performance monitoring software.
HOMER Energy
Optimization software for microgrid and distributed energy resource design.
EnergyPLAN
Advanced energy system analysis software for integrated renewable energy planning.
LEAP (Low Emissions Analysis Platform)
Integrated planning tool for energy policy analysis and climate change mitigation assessment.
BuildingSync
Standardized data language for commercial building energy audit data exchange.
OpenStudio
Cross-platform collection of software tools for building energy modeling.
Transport and Mobility
6 tools
COPERT
European standard model for road transport emission inventories.
MOVES (EPA)
US EPA's motor vehicle emission simulator for on-road and non-road sources.
GHGenius
Life cycle assessment model for transportation fuels and vehicle technologies.
ICCT Transportation Tools
Policy analysis tools from the International Council on Clean Transportation.
Alternative Fuels Data Center Tools
US Department of Energy tools for alternative fuels and advanced vehicle analytics.
Smart Freight Centre GLEC Framework
Global logistics emission calculation framework; carbon footprint methodology for freight transport.
Waste Management
3 tools
Agriculture and Land Use
7 tools
Agriculture and Land Use (ALU) Tool
Country-scale GHG inventory software for AFOLU (agriculture, forestry, and other land use).
EX-Ante Carbon Balance Tool (EX-ACT)
FAO's carbon balance estimation tool for agriculture and land use projects.
REDD+ MRV Tools
Monitoring, reporting, and verification tools for REDD+.
Global Forest Watch
Real-time forest monitoring platform; provides deforestation alerts and data.
USLE/RUSLE Soil Erosion Models
Soil erosion prediction models for land use planning.
InVEST Natural Capital Accounting
Integrated valuation platform for mapping ecosystem services and tradeoffs.
Cool Farm Tool
Global calculator for agricultural greenhouse gas emissions.
Life Cycle Analysis (LCA)
6 toolsGREET (Argonne)
LCA software suite covering fuels, vehicles, electricity, and materials.
SimaPro
Leading LCA software for sustainability professionals and product environmental assessment.
openLCA
Free open-source LCA software offering comprehensive impact assessment capabilities.
GaBi Life Cycle Assessment
Professional LCA software for product sustainability and environmental impact assessment.
Umberto LCA+
Material and energy flow analysis software; includes integrated LCA capabilities.
Ecoinvent Database
Review of the world's leading life cycle inventory database for LCA studies.
Integrated Assessment Models
4 tools
GAINS
Model assessing cost and health impacts by linking air pollution and GHG mitigation.
IMAGE (PBL)
Integrated assessment model for global environmental change and policy analysis.
FUND
Framework model for uncertainty, negotiation, and distribution.
DICE/RICE
William Nordhaus's Dynamic Integrated Climate-Economy model.
Energy Systems and Modeling
7 toolsMESSAGEix (IIASA)
Open-source system optimization model for energy economics and roadmaps.
PyPSA
Power system analysis and optimization library in Python.
OSeMOSYS
Open-source energy modeling system for long-term integrated assessment and energy planning.
PLEXOS
Integrated energy market simulation software for electricity, gas, and water systems.
PowerWorld Simulator
Power system simulation software for transmission planning and operations.
GridLAB-D
Open-source power distribution system simulation and analysis tool.
NREL System Advisor Model (SAM)
Techno-economic model for renewable energy project analysis.
Air Quality and Environmental Modeling
6 tools
Community Multi-scale Air Quality (CMAQ) Model
3D Eulerian atmospheric chemistry and transport modeling system.
WRF (Weather Research and Forecasting)
Mesoscale numerical weather prediction system for atmospheric research and forecasting.
AERMOD
EPA's preferred air quality dispersion model for regulatory applications.
CALPUFF
Non-steady-state puff dispersion model for complex terrain and meteorology.
HYSPLIT
Single particle Lagrangian tracking model for atmospheric transport.
SMOKE
Emission data conversion system for air quality modeling.
Climate Projections and Mitigation
7 toolsCMIP6 via ESGF
Provides search and download access for CMIP6 model outputs and scenarios.
Climate Explorer
Web tool for analysis of climate data and indices worldwide.
Giovanni (NASA)
NASA's web-based tool for analysis and visualization of Earth science data.
Climate Data Online
NOAA's comprehensive climate data access and analysis platform.
WorldClim
Global climate and weather data for ecological modeling and GIS applications.
Climate Change Knowledge Portal
World Bank's climate data and information platform for development planning.
ClimateNA
Downscaling software for climate normals for North America.
Climate Finance and Carbon Markets
5 toolsClimate Policy Initiative (CPI) Tools
Climate finance tracking and policy analysis tools.
Carbon Pricing Dashboard
World Bank platform tracking carbon pricing initiatives.
ICAP ETS Map
International Carbon Action Partnership's map of emissions trading systems.
Green Climate Fund Tools
Climate investment and project development tools and frameworks.
CDM/JI Pipeline Analysis
CDM and JI project database and analyses.
Climate Adaptation and Resilience
3 toolsSectoral Climate Tools
4 toolsGSTC Sustainability Tools
Global Sustainable Tourism Council's sustainability tools for tourism sector operations.
Health Care Without Harm
Climate impact calculation tools and sustainability resources for the healthcare sector.
World Green Building Council
Sustainable building assessment frameworks and green building certifications.
IFC Sustainable Finance
IFC's sustainability and climate risk assessment tools for the banking and finance sector.
Resource Hubs and Directories
9 hubsNREL Bioenergy Models Directory
Curated database for bioenergy-related models and datasets; includes documentation links.
Environmental Expert Software
Comprehensive directory for environmental management software and emission inventory tools.
Climate Change AI Tools
AI tools and applications for climate change.
Climate-KIC Innovation Tools
Climate tools and acceleration programs from the European innovation community.
Carbon Brief Tools and Data
Climate science and policy analysis with interactive tools and datasets.
Climate Outreach Communication Tools
Climate communication tools and resources for public engagement.
Climate Trace
Platform tracking global emissions using satellite data and AI.
Global Carbon Atlas
Platform for exploring and visualizing global carbon data and trends.
Climate Interactive En-ROADS
Climate solutions simulator for policy scenario analysis.