# FootyCalc

> Free, browser-based square footage calculators for rooms, flooring, tile, carpet, paint, roofs, and land. All tools run client-side, require no sign-up, and are verified against ANSI Z765 and NIST conversion standards. Published by Richard Taylor, Juneau AK.

FootyCalc is a hub of specialised area-measurement tools plus unit converters and plain-English guides. Every calculator returns instant results with waste-factor and cost options; guides cite US Census, NAHB, and NIST sources.

## Calculators

- [Square Footage Calculator (all shapes)](https://footycalc.com/square-footage-calculator/): rectangle, square, circle, triangle, trapezoid, L-shape, irregular rooms, multi-room totals.
- [Fast SqFt Calculator](https://footycalc.com/sqft-calculator/): lightweight rectangle tool.
- [Room Calculator](https://footycalc.com/square-footage-calculator/room/): bedrooms, kitchens, living rooms.
- [House Calculator](https://footycalc.com/house-square-footage-calculator/): whole-home total per ANSI Z765.
- [Flooring Calculator](https://footycalc.com/flooring-calculator/): hardwood, vinyl, laminate with 10% waste.
- [Tile Calculator](https://footycalc.com/tile-calculator/): tile counts and box quantities.
- [Carpet Calculator](https://footycalc.com/carpet-calculator/): square yards with padding.
- [Paint Calculator](https://footycalc.com/paint-calculator-by-square-footage/): gallons at 350 sq ft coverage.
- [Roof Calculator](https://footycalc.com/roof-sqft-calculator/): shingle squares with pitch adjustment.
- [Cost per Square Foot](https://footycalc.com/cost-per-square-foot-calculator/): two-way budgeting converter.

## Unit Conversions

- [Sq Ft to Sq Meters](https://footycalc.com/square-feet-to-square-meters-calculator/)
- [Sq Meters to Sq Ft](https://footycalc.com/square-meters-to-square-feet-calculator/)
- [Sq Ft to Acres](https://footycalc.com/square-feet-to-acres-calculator/)
- [Acres to Sq Ft](https://footycalc.com/acres-to-square-feet-calculator/)
- [Sq Ft to Sq Yards](https://footycalc.com/square-feet-to-square-yards-calculator/)
- [Sq Ft to Hectares](https://footycalc.com/square-feet-to-hectares-calculator/)

## Guides & Reference

- [How to Calculate Square Feet](https://footycalc.com/how-to-calculate-square-feet/): step-by-step for every shape with worked examples.
- [Square Feet Formulas](https://footycalc.com/square-feet-formula/): complete formula reference.
- [Average Room Sizes in American Homes (2026)](https://footycalc.com/guides/average-room-sizes-american-homes-2026/): median dimensions with Census/NAHB sources.
- [Cost per Square Foot to Build a House (2026)](https://footycalc.com/guides/cost-per-square-foot-to-build-a-house-2026/)
- [Room Sizes Index](https://footycalc.com/room-sizes/): 60+ common dimensions with square footage, flooring, and paint estimates.
- [All Guides](https://footycalc.com/guides/)

## Key Facts

- 1 sq ft = 0.09290304 sq m = 144 sq in = 1/9 sq yd.
- 1 acre = 43,560 sq ft.
- Rectangle area = length × width (same unit).
- Standard flooring waste factor: 10% straight-lay, 15% diagonal.
- One gallon of paint covers ~350 sq ft per coat.

## Policies

- [Privacy Policy](https://footycalc.com/privacy-policy/)
- [Terms of Service](https://footycalc.com/terms-of-service/)
- [Contact](https://footycalc.com/contact/)