Eucalyptus wood is generally harder than Maple wood. This conclusion is based on the Janka hardness scale, which measures the resistance of wood to indentation. On the Janka scale, Eucalyptus wood typically ranges from 1,100 to 1,600 pounds per square inch (psi), while Maple wood scores between 1,450 and 1,450 psi. The higher the Janka score, the harder the wood. Eucalyptus, therefore, has a higher Janka rating, making it harder than Maple.