# HammerCalc

> Free construction and DIY material calculators for US homeowners and
> tradespeople: concrete, paint, flooring, roofing, fence, mulch, drywall,
> tile, gravel, decking, wallpaper, insulation, and wall framing. Every page
> publishes the exact formula, waste factor, and assumptions behind the
> estimate.

Results are returned in the package sizes US stores sell (80 lb bags, shingle
bundles, boxes, 4x8 sheets, cubic yards, tons). Calculations run entirely in
the visitor's browser; no measurements are collected.

## Calculators

- [All calculators](https://hammercalc.com/calculators/)
- [Concrete calculator](https://hammercalc.com/calculators/concrete-calculator/):
  cubic yards and bags for slabs
- [Paint calculator](https://hammercalc.com/calculators/paint-calculator/):
  gallons by room size and coats
- [Roofing calculator](https://hammercalc.com/calculators/roofing-calculator/):
  squares and bundles from footprint and pitch
- [Flooring](https://hammercalc.com/calculators/flooring-calculator/),
  [tile](https://hammercalc.com/calculators/tile-calculator/),
  [drywall](https://hammercalc.com/calculators/drywall-calculator/),
  [fence](https://hammercalc.com/calculators/fence-calculator/),
  [mulch](https://hammercalc.com/calculators/mulch-calculator/),
  [gravel](https://hammercalc.com/calculators/gravel-calculator/),
  [decking](https://hammercalc.com/calculators/decking-calculator/),
  [wallpaper](https://hammercalc.com/calculators/wallpaper-calculator/),
  [insulation](https://hammercalc.com/calculators/insulation-calculator/),
  and [stud/framing](https://hammercalc.com/calculators/stud-calculator/) calculators

## Guides

- [Project guides](https://hammercalc.com/guides/): costs, waste factors, and
  planning walkthroughs with worked examples.

## About

- [Methodology and team](https://hammercalc.com/about/)
- [Contact](https://hammercalc.com/contact/): formula corrections prioritized.