The standard height guideline assumes you have an average sized sofa in front of the coffee table with a seat cushion height of 17 to 19 inches measured from the floor to the top of the seat cushions.
Standard coffee table height.
Since most sofas have a seat height of about 17 to 19 inches standard coffee tables are about 16 to 18 inches tall.
This allows you to easily grab any drinks or food off the tabletop.
Although the height of a coffee table comes down to personal preference there are some industry standards based on functionality and style.
Ideally the top of a coffee table should be the same height or one to two inches lower than the top of your sofa s seat cushions.