From this site

One project, every trade

Each calculator adds its lines to a single estimate — consolidated BOM, schedule and cash-flow included.

Open My Project →

Soffit/Bulkhead Drywall Wrap Area Calculator

Calculate the total drywall area needed to wrap a boxed-in soffit or bulkhead (two side faces plus the bottom face).

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
19.69 ft1.31 ft0.98 ft
Schematic, drawn to the proportions you entered — not to scale on screen.

Total wrap area

64.58 ft²

High confidence

For the dimensions entered, expect a total wrap area of 6 m². Set for United States against IRC 2024. The market selector changes both the units and the code cited.

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

  • Wrap area = 2 × (depth × length) for the two side faces + (bottom width × length) for the bottom face, assuming the top of the soffit is closed against the structure above

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

Why does the formula only cover three faces?
A boxed-in soffit or bulkhead has two vertical side faces and one bottom face exposed to the room — the top is assumed to be closed against the structure above and doesn't need drywall, so only those three faces are counted.
What if the top of the soffit isn't closed against the structure?
This calculator assumes the top is already closed off (against the floor/ceiling structure above), so no top face is included. If your soffit has an open or separately framed top face, add that area separately.
Does this include cutting waste for the drywall pieces?
No — this gives the raw wrap area of the three faces only. Add your own waste allowance when converting this area into sheet counts, since soffit pieces are often small, irregular cuts with more offcuts than a flat wall or ceiling.