Most pool calculators only find volume. This one finds the interior surface area — the actual square footage of vinyl your floor, walls, and sloped deep-end need — so you can size a liner or resurfacing job.
A pool's interior is more than a flat rectangle. It is the floor, the four walls (perimeter times wall height), and the sloped or hopper transition to the deep end. The piece nearly every calculator misses is that a sloped floor is longer than its flat footprint — a floor dropping five feet over a thirty-foot run has a surface length set by the hypotenuse, not the horizontal distance. This calculator adds that extra material, so the square footage reflects the real sheet you need.
The dollar figure here is a rough vinyl-material ballpark per square foot, not a quote for a finished liner. Inground vinyl liners are custom-manufactured to your pool's exact shape and sold as a unit, so the real price is not simply square footage times a rate, and it does not include installation, water, or old-liner disposal. Use this to understand the scale of the job and the material involved, then get a measured quote for the actual liner. The surface-area and weight figures, by contrast, are straight geometry and reliable for planning and shipping.
For a 32 × 16 ft pool, the liner must cover the floor plus four walls — the total square footage is well above the 512 sq ft floor alone, which is why measuring walls matters. This is an estimate, not a custom-liner quote.