Square feet(ft) to square meters(m) Square meters(m) to square yards. A centimeter (cm) is a decimal fraction of the meter, The international standard unit of length, approximately equivalent to 39.37 inches. According to the modern definition, one inch is equal to 25.4 mm exactly. Boards are usually supplied in random widths and lengths of a specified thickness, and sold by the board-foot (144 cubic inches).Įngineered Lumber Įngineered lumber is lumber created by a manufacturer and designed for a certain structural purpose. 2.4 cm: 15/16 Inch: 0.94488 Inches: 25 mm: 2.5 cm: 1 Inch: 0.98425 Inches: Area Converter. One inch is defined as 112 of a foot and is therefore 136 of a yard. In North America sizes for dimensional lumber made from hardwoods varies from the sizes for softwoods. Hardwoods Hardwood Dimensional Lumber Sizes But also in running lengths, where each plank in a given packet is different, from 2500mm to 5500mm, though shorter and longer may be present. 18 mm 1.8 cm Just short of 3/4 Inch 0.70866 Inches 19 mm 1.9 cm Little under 3/4 Inch 0.74803 Inches 20 mm 2.0 cm Just short of 13/16 Inch 0.78740 Inches 21 mm 2.1 cm Little over 13/16 Inch 0.82677 Inches 22 mm 2. Lengths can be sold at every 300 mm (a metric approximation of 1'). Sizes are, in some cases, based on the imperial measurement and referred to as such in other cases the sizes are too far removed from the imperial size to be referred to by imperial measurement. Outside North America sizes of timber vary slightly. Non-North American sizes Examples of Dimensional Lumber Sizes (Softwood and Hardwood) In the United States the standard lengths of lumber are 6, 8, 10, 12, 14, 16, 18, 20, 22, and 24 feet. The length of a board is usually specified separately from the width and depth. Dimensional lumber ĭimensional lumber is a term used in North America for lumber that is finished/planed and cut to standardized width and depth specified in inches.