Free Resources

Cost of Living Index

The Chapwood Index reflects the true cost-of-living increase in America. Updated and released twice a year, it reports the unadjusted actual cost and price fluctuation of the top 500 items on which Americans spend their after-tax dollars in the 50 largest cities in the nation.

BTU Calculator

A BTU is an abbreviation for British Thermal Unit, which is the amount of energy required to raise 1 pound of water 1 degree Fahrenheit at sea level

Carbon Calculator

You can support Carbon Offsetting Projects that both tackle climate change and support impoverished communities across the world. Just click the ‘Offset’ button after you have finished your calculation.

Energy Calculator

Energy Consumption Calculator. The energy E in kilowatt-hours (kWh) per day is equal to the power P in watts (W) times number of usage hours per day t divided by 1000 watts per kilowatt:

Home Energy Saver

The Home Energy Saver™ (HES) empowers homeowners and renters to save money, live better, and help the earth by reducing energy use in their homes.

Carbon Trade Exchange

Environmental Market Services Limited (Trading as Carbon Trade Exchange)