Energy Management Tools

Units Conversion

Online Conversion Tool

This free online "units of measure" conversion tool converts just about anything to anything else. Over 5,000 units, and 50,000 conversions.

Weather Data

Weather Data Depot

The tool provides average daily temperature, cooling degree days, heating degree days, degree day comparaison, and degree day forcast.

Degree Days


This tool generates heating and cooling degree days for thousands of locations worldwide.

Building Benchmarks

Building Benchmarks Logo

This online tool displays “Commercial Buildings Energy Consumption Survey (CBECS)” data which is compiled by the U.S. Department of Energy.

Electric Utility Rates


OpenEI users may browse, edit and add new electric utility rates to OpenEI's repository. EIA provides the authoritative list of utility companies in the United States.

Power Profiler


The Power Profiler report will show you the air emissions attributable to the electricity you use in your home or business during one year.

Greenhouse Gas Equivalencies


This calculator may be useful in communicating your greenhouse gas reduction strategy and targets, or other initiatives aimed at reducing greenhouse gas emissions.

Light Bulb Calculator


This tool compares your existing incandescent light bulb to an ENERGY STAR compact fluorescent bulb, and therefore provide you with estimated energy savings per year.

Target Finder


Target Finder is a no-cost online tool that enables architects and building owners to set energy targets and receive an EPA energy performance score for projects during the design process.

Portfolio Manager


Portfolio Manager is an interactive energy management tool that allows you to track and assess energy and water consumption across your entire portfolio of buildings.



The U.S. Energy Information Administration (EIA) has an online portal that provides a comprehensive, dynamic, and interactive view of the U.S. government's national and state energy data.

International Energy Agency


The International Energy Agency (IEA) website has a wealth of statistics regarding energy production and consumption for any country in the world.

Moisture Control in LS Roofing

Online Conversion Tool

It allows the roofing practitioner to determine if a roofing system design requires a vapor retarder or if the system can be modified to enhance its tolerance for small leaks.

R-Value of Metal Stud Wall

Weather Data Depot

It helps calculating clear-wall R-values for light-gage steel-framed walls with insulated cavities containing 2x4 and 2x6 C-shape steel studs with solid webs.

Roof Savings Calculator


This tool is for commercial and residential buildings using whole-building energy simulations. It is built upon the DOE-2.1E engine for fast energy simulation.

Whole Wall R-value Calculator


The Whole Wall Thermal Performance calculator has fourteen wall details, three types of foundations, five shapes of floor plans, multi-story building options, etc.

Building Codes


This site is designed to allow you to view the International Codes, State-Adopted Codes, and various Archived Codes for free. Click here to access other free resources..

Residential Prescriptive Reqs.


This online tool provides the minimum insulation R-value for wall and ceiling as well as the maximum fenestration U and SHGC factors for each U.S. climate zone.



This online tool simplifies residential energy code compliance by automating the trade-off calculations for the IECC and a number of state-specific codes.



The COMcheck tool simplifies commercial and high-rise residential energy code compliance.