Craft Quantities
Plan & Takeoffs

Measurements & Conversions

Area & land

Floor areas, façade areas, and the units land is bought and registered in.

  • 16Calculators
  • 16Work in imperial
  • 12Work in metric

What this covers

Square feet, square metres and square yards between one another; square inches and square millimetres for section properties and small components; acres, hectares and square feet for plots; and area straight from a set of dimensions when what you have is a room rather than a figure.

What decides which one you need

Whether the number in front of you is measured flat or measured over a surface. A roof plan and a roof slope differ by the secant of the pitch, and at 30° that is 15% more covering than the plan says; a wall area net of openings and the same wall gross can differ by a third. Every page here converts the figure it is given faithfully and none of them can tell which kind it was, so the page says which one you should have brought.

What this does not cover

How much paint, tile or turf the area consumes, which belongs to the material being laid on it.

Every calculator in this family

16 calculators

Acreage Calculator

Convert a plot's length and width into acres, hectares and square feet for land, site and agricultural work.

Imperial / Metric

Land Area Converter

Convert land area between acres, hectares, square feet, and square meters — all shown simultaneously.

Imperial / Metric

Square Footage Calculator

Calculate the area of a rectangle, circle, or triangle, shown simultaneously in square feet, square meters, square yards, and acres.

Imperial / Metric

All of Measurements & Conversions