How do you measure your pool to know what size liner you need for an above ground oval pool?
It all depends on what shape the pool is.
Rectangle : L X W X Height
Free-form pools like kidneys etc, need a lot more detailing.
L plus W plus H
The way you would do this is by measuring from the inside on the
wall, to the opposite side, inside on the wall. Do this in both
direction on the pool. Most people measure from top rail to top
rail, this gives them a wrong measurement. Let's say you have a
15x30 oval, you would measure from inside to inside, on the wall to
get you measurements. To determine the height of above ground
pools, you will measure from the bottom track to the top of the
wall. Let's say it is 52"
so you would have a 15x30x52 pool. Just a little side note, not
every above ground pool is exactly a perfect measurement, saying
that a 15x30 might read 14'8"x30'4" but in turn it will be a 15x30