The Janka hardness scale is used to determine the hardness of wood surfaces and their suitability as flooring. The test measures the force required to embed a .444 inch steel ball into wood to half its diameter (.222 inch). This results in an indentation 100 square millimeters in size. It is one of the best measures of hardness and durability of wood species.

It is important to remember that just because a wood floor is rated higher, does not mean that if used as flooring it will not dent or scratch. All wood products will dent or scratch. This test helps to evaluate how much force it may take to dent or scratch a wood surface.  

Here we have highlighted a few of the most popular choices of hardwood flooring today. This list is not inclusive of all species of woods or types of flooring available. Generally speaking, the heavier the wood, the harder it is.

Please use this as a guide for. The hardness of the wood should only be one factor when considering a floor. Remember, ALL FLOORS WILL DENT, SCRATCH, OR GOUGE WITH ENOUGH FORCE.