based on data from: U.S. Forest Products Laboratory Species Weight of Heat Heat Seasoned Producd Producd Cord-lbs per Cord per ton M Btu M Btu Hardwoods Black Ash "2,992" 19.1 12.8 White Ash "3,689" 23.6 12.8 Red Oak "3,757" 24.0 12.8 Beech "3,757" 24.0 12.8 Blue Beech "3,890" 26.8 13.8 White Oak "4,012" 25.7 12.8 White Birch "3,179" 20.3 12.8 Grey Birch "3,179" 20.3 12.8 YellowBirch "3,689" 23.6 12.8 Paper Birch "3,179" 20.3 12.8 Black Birch "3,890" 26.8 13.8 Hickory "4,327" 27.7 12.8 Red or "2,924" 18.7 12.8 Cherry "3,120" 20.0 12.8 BlackCherry "2,880" 19.9 13.8 White Elm "3,052" 19.5 12.8 AmericanElm "3,052" 19.5 12.8 Aspen "2,295" 14.7 12.8 Basswood "2,108" 13.5 12.8 Cottonwood "2,108" 13.5 12.8 Apple "4,140" 26.5 12.8 Hemlock "2,482" 15.9 12.8 BlackLocust "3,890" 26.8 13.8 Sugar Maple "3,757" 24.0 12.8 Eastern "4,267" 27.3 12.8 Hackberry "3,247" 20.8 12.8 Boxelder "2,797" 17.9 12.8 Butternut "2,100" 14.5 13.8 Softwoods White Cedar "1,913" 12.2 12.8 Eastern "2,236" 14.3 12.8 Western "2,236" 14.3 12.8 Ponderosa "2,380" 15.2 12.8 Tamarack "3,247" 20.8 12.8 Spruce "2,100" 14.5 13.8 Black Spruce "2,482" 15.9 12.8 Jack Pine "2,669" 17.1 12.8 Norway Pine "2,669" 17.1 12.8 Pitch Pine "2,669" 17.1 12.8 Balsam Fir "2,236" 14.3 12.8 Willow "2,100" 14.5 13.8