Commonality put aside, 3-feet is typically the optimal and most ergonomic height for a kitchen counter. It may not be the best for a specific task, but it is the best overall compromise for the majority of tasks done in the kitchen.
For most people, a kitchen counter top height of 3-feet provides a comfortable work station. Extremely short or tall people, or those with special needs, may want to modify that height to better suit their needs.


