The critical thing is to consider the total height of your bed setup.
How to measure a mattress height.
Then use a measuring tape to measure the length of your bed from the top edge straight down to the bottom edge.
Typical mattress pocket depths vary from 8 to 18 inches and box springs usually measure 8 to 12 inches deep.
Measure from the bottom of the foundation not the floor to the top of the mattress.
Otherwise only measure the height of the mattress itself.
People often assume the upper seam is the top of the mattress it s not.
To measure your bed start by stripping the bedding so you can accurately measure it.
How to measure bed height.
The average height of a mattress plus foundation and frame is around 25 inches though it can be more or less depending on your height and personal preference.
If you only measure up to the upper seam the actual bed height could be off by as much as 3 inches.
How to properly measure the length width and depth of your mattress and box spring.
If you re measuring for fitted sheets or a comforter and you have a padded mattress topper include the mattress topper in your measurement.
Pairing a thick mattress with a high foundation may make it difficult to get in and out of bed.
Measure in inches from the bottom where it rests on the box spring to the top of the mattress including any pillow top.
Bunkie boards allow for a lower bed height since they measure only 1 1 2 to 2 1.
If necessary repeat for box spring.
Next measure the width by seeing how long your bed is from the left edge straight across to the right edge.