The standard height of a bar top is 42 inches. This height allows both a standing person and a person seated on a bar stool to be comfortable, and it makes it easy to reach drinks and food placed on the bar top from both positions.
This height is also the most ergonomic solution for the comfort of a standing bartender. This height also provides enough space for a standard counter with a backsplash to be placed behind the bar.
The height of 42 inches is common for both home bars and commercial bars. A height of a bar stool suitable for use with a table height between 40 and 42 inches ranges between 28 and 30 inches.