How To Measure Your Above Ground Pool

Measure twice, order once! With our simple measuring guide it is easy to measure your pool, but always remember to double check your measurements for the perfect fit.

Round Pool Liners

If you have a round above ground pool, measure the diameter straight across the center of the pool from a couple of different spots, inside the top of the pool liner wall to inside the top of the opposite wall. Sometimes above ground pools shift slightly (becoming less round in spots), so taking the average of 2 or 3 diameter measurements is the best way to be accurate.

Oval Pool Liners

If your above ground pool is oval, you will want to measure the length from end to end at the center of the pool, and the width in 2 or 3 spots. Then, take the average width from your measurements. Again, measure from one inside wall to the other inside wall for length and width to get the correct measurement.

Rectangular Pool Liners

If your above ground pool is rectangular, measure the length and width and be sure to note what type of corners your pool has. Some rectangular pools have square corners, some pools have diagonal corners and some have rounded corners. If you are ordering a stock rectangular pool liner, those will have with 90 degree (square) corners.

Measuring the Pool Perimeter

In some cases, measuring the perimeter of your pool may be required to verify the correct size of liner is ordered. To properly measure an above ground pool's perimeter, you will require string, a tape measure and some tape.

To start, tape the string to the pool wall, at any starting location. Now, holding the string tightly, tape it to the same spot on the next section of the wall, ensuring the string is slipped between the wall and the uprights of the pool (ensure you do not stretch the string by over tightening it). Repeat this process until you are back to the starting position, and then cut the string at this point. Measure the entire length of the string; this measurement will be the perimeter of your above ground pool.

Measuring the Pool Wall

When you measure the height of your pool wall, measure from outside the pool (not inside the pool), from the bottom rail to just under the top rail to ensure the most accurate pool wall height. Measuring from outside the pool ensures that sand or pool cove on the inside will not throw off your measurement.

Above ground pools typically have 48 inch, 52 inch or 54 inch high walls.