Many experts agree that regardless of species, wood fuels
have average higher heating values around 8,500 Btu/ovendry lb.

Data Source: USDA Forest Service, Forest Products Laboratory
General Technical Report FPL 29, 1979
U.S. Government Printing Office   1979-650-028/20
Full Report is archived here

WOOD BTU/pound Ovendried Bigleaf maple 8,410 Black cottonwood 8,800 Cypress 10,660 Douglas-fir 9,200 Hickory 9,360 Lodgepole pine 8,600 Oregon ash 8,200 Oregon white oak 8,110 Pitch pine 12,230 Ponderosa pine 9,140 Poplar 9,630 Red alder 8,000 Red oak 9,360 Redwood 9,210 Sitka spruce 8,100 Western hemlock 8,620 Western red cedar 9,700 White ash 9,630 White birch 9,340 White cedar 9,070 White fir 8,300 White oak 9,510 White pine 9,610 Yellow pine 10,380

BARK TYPE BTU/pound Ovendried American beech 7,993 American elm Ulmus americana 7,385 American sycamore Platanus occidentalis 7,877 Balsam fir 9,339 Balsam fir Abies balsamea 9,437 Balsam (all varieties) 9,100 Beech 7,640 Black cottonwood 9,000 Black gum Nyssa sylvatica 8,412 Black oak 8,340 Black spruce 9,143 Black spruce Picea mariana 8,782 Black tupelo 8,102 Black willow 8,137 Black willow Salix nigra 7,648 Douglas-fir 10,100 Eastern cottonwood 8,422 Eastern hemlock 9,517 Eastern hemlock Tsuga canadensis 9,348 Eastern white pine 9,647 Elm (soft) 7,600 Engelmann spruce 8,830 Engelmann spruce Picea engelmannii 8,820 Green ash 8,367 Jack pine 9,393 Jack pine Pinus banksiana 9,339 Loblolly pine 9,320 Loblolly pine Pinus taeda 9,400 Lodgepole pine 9,382 Lodgepole pine Pinus contorta 10,760 Longleaf pine 9,290 Longleaf pine Pinus palustris 9,130 Northern black cottonwood 8,765 Northern red oak 8,896 Northern red oak Quercus rubra 8,383 Northern white oak 7,536 Northern white oak Quercus alba 7,450 Paper birch Betula papyrifera 9,887 Pin oak 8,883 Ponderosa pine 9,616 Poplar 8,810 Post oak 6,773 Quaking aspen 8,712 Quaking aspen Populus tremuloides 8,897 Red alder 8,760 Red alder Alnus rubra 8,410 Red maple 8,293 Red pine 9,070 Red spruce 8,630 Shagbark hickory 8,423 Shortleaf pine 9,319 Shortleaf pine Pinus echinata 9,550 Silver maple 8,360 Slash pine 9,327 Slash pine 9,380 Southern red oak 8,371 Spruce pine Pinus glabra 8,705 Sugar maple 8,426 Sugar maple Acer saccharum 7,739 Sweetgum 7,650 Sweetgum Liquidamber styraciflua 7,912 Sycamore 7,978 Tamarack 9,010 Virginia pine 9,170 Western hemlock 9,800 Western larch 8,825 Western larch Larix occidentalis 8,750 Western redcedar 8,700 White ash 8,453 White birch 10,332 White spruce 8,913 Yellow birch 9,200 Yellow birch Betula alleghaniensis 9,548 Yellow-poplar 8,956