Measuring your bed for custom sheets is probably
the most critical of measurements for bedding products. A fitted
bottom sheet must fit a mattress in a certain way. The corners must
be at the corners of the mattress (not off the side, or somewhere else
along the edge), and the elastic around the bottom must be tucked
slightly under the mattress itself. It takes a very carefully
arranged set of numbers to bring that about, and you are the only one
who can provide it for us.
first step in getting a custom sheet that fits, is to measure the
length and width of your mattress. There is no legal
requirement for mattress manufacturers to conform to "standard"
sizes in making their beds.
It could be a mistake to assume they stuck to standard sizes
on your bed.
NOTE: Be sure to have your mattress pad and topper
on the mattress before performing the measurements as these
items add to the size you need.
Next is the tricky part.
The depth shouldn't be measured from cord-to-cord. As
you can see from this picture, the bottom-most cord is above the
box spring, and the top cord is below the upper loft of the
As tempting as it may be to use the cord as a neat
measuring point, you'll end up with sheets that just don't fit.Instead, place the end of the tape measure on the top of the
box spring, as shown here. Then place your hand on the top of the
mattress and measure up to it. As you can see here, the depth of
this mattress is 14".
Remember to round off your depth to the nearest inch.
Also, bear in mind that the sheets you order will actually
be one inch deeper than the mattress measurement you give us.
This is to provide enough sheet to tuck under the depth, not just
fit to the bottom edge of your mattress.