# Construction & DIY Calculators

- **URL:** https://codeasystem.com/calculators/construction/
- **Markdown index:** https://codeasystem.com/calculators/construction/index.md
- **Calculators in this category:** 8

Construction calculators for concrete volume, paint coverage, tiles, gravel, drywall, square footage and roof pitch.

Focus areas: Concrete, paint, tiles, mulch and roof pitch.

## All calculators
- [Concrete Calculator](https://codeasystem.com/calculators/construction/concrete-calculator.md); Estimate cubic yards of concrete for a slab, plus the number of 80-lb or 60-lb bags to buy with a waste allowance.
- [Paint Calculator](https://codeasystem.com/calculators/construction/paint-calculator.md); Work out how many gallons of paint cover your walls after subtracting doors and windows, for one, two or three coats.
- [Tile Calculator](https://codeasystem.com/calculators/construction/tile-calculator.md); Count how many tiles fill a floor or wall, including a waste allowance for cuts, breakage and future spares.
- [Mulch & Gravel Calculator](https://codeasystem.com/calculators/construction/mulch-gravel-calculator.md); Convert bed area and depth into cubic yards of mulch or gravel, plus 2-cu-ft bag counts and an estimated gravel tonnage.
- [Drywall Calculator](https://codeasystem.com/calculators/construction/drywall-calculator.md); Estimate 4×8 drywall sheets and screw weight needed to cover a wall or ceiling area, rounded up to full boards.
- [Roof Pitch Calculator](https://codeasystem.com/calculators/construction/roof-pitch-calculator.md); Turn a roof’s rise-in-12 pitch into degrees of angle, grade percent and the slope multiplier that scales footprint to roof surface.
- [Square Footage Calculator](https://codeasystem.com/calculators/construction/square-footage-calculator.md); Add up to three rectangular sections to find total square footage, with acre equivalents for land-scale projects.
- [Stud Calculator](https://codeasystem.com/calculators/construction/stud-calculator.md); Count studs for a wall framed at 16 or 24 inches on center, with plate lumber and corner/opening guidance included.

Each link above points to the full Markdown reference for that calculator (inputs, formula, worked example, FAQs). The interactive HTML version lives at the same path without the `.md` suffix.

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Last updated: 2026-08-23 · [Section overview](https://codeasystem.com/calculators/index.md)