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Pool Cover & Liner Area Calculator

Work out the cover or liner area for a pool, including the wall wrap a liner needs and the trim a cover does not.

Computed in your browser — nothing you enter is uploaded. Figures are presented for United States against IRC 2024, and every formula is cited under regulatory standards below.

Last verified 2026-08-26 · v1.0.0

Market
Imperial · sales tax
26.25 ft13.12 ft4.92 ft
Schematic, drawn to the proportions you entered — not to scale on screen.

Material area

344.45 ft²

Check your inputs

Rectangular geometry. A freeform pool needs a template or a survey — the perimeter of a curved shell is longer than its bounding rectangle suggests.

Water surface
344.45 ft²
Wall area
387.5 ft²
Liner area with 8% allowance
790.5 ft²
Water volume
62.78 yd³
Area in ft²
344.45 ft²

At the values currently entered, the material area works out to 32 m². The largest intermediate quantity is liner area with 8% allowance, at 73.4 m² — check that step first if the total looks off. Confidence is moderate: the method is sound, but real materials and site conditions vary. Figures are shown for United States, where IRC 2024 is the governing residential reference; switch the market above if you are building elsewhere.

Estimated cost — your price

This site holds no price list for this material — local prices vary too much to publish honestly. Enter your supplier's price and the result is costed with it.

Preliminary estimate, not certified engineering. This tool produces an indicative quantity calculation for planning purposes only — it is not a certified structural analysis, a guaranteed material takeoff, or a substitute for building department approval. Always verify measurements on-site and have a licensed contractor or structural engineer review any load-bearing, code-sensitive, or safety-critical work before purchasing materials or starting construction. Spotted an arithmetic or standards error? Report it to contact@craftquantities.com with your inputs — confirmed fixes become pinned regression tests.

[Schema Verified] Computed in alignment with American Concrete Institute (ACI 318-19) formulas and International Residential Code (IRC 2024) spatial boundaries.

Regulatory standards & verification citations

  • Solar covers are cut to the water surface; overlapping the coping traps debris and shortens cover life
  • Liner area = floor + walls, plus an allowance for the bead track and floor radius

Your workspace

Most jobs need more than one number. Add the calculators you need next and they open right here, underneath this one — your figures stay on screen and nothing is lost to a page change.

Frequently asked questions

Should a solar cover overlap the edge?
No — cut it to the water surface. Overlapping onto the coping traps debris underneath, holds water against the surround and shortens the cover's life. Most covers are supplied oversized so you can trim them in place once, which is the right way to fit one.
Does a solar cover actually heat the pool?
Mostly it stops heat leaving. The direct solar gain through the bubbles is real but modest; the large effect is suppressing evaporation, which is where most of an outdoor pool's heat goes. That is why a cover helps overnight and in wind far more than it helps at midday.
Can I order a liner from this figure?
No. Use it to budget and to sanity-check a quote. A liner must be ordered against the manufacturer's own measuring form, which records the steps, the deep-end transition and the floor radius — all of which change the shape and none of which a rectangle captures.