Forest products conversion factors provides ratios of raw material input to the output of wood-based forest products for 37 countries of the world. Analysts, policymakers, forest practitioners and forest-based manufacturers often have a need for this information for understanding the drivers of efficiency, feasibility and economics of the sector. In addition, conversion factors are often needed to convert from one unit of measure to another. The publication also includes explanations on the units of measure, the drivers of the ratios, as well as information on physical properties of wood-based forest products. Finally, where reported factors were unavailable, factors from other sources are given.