Back to calculators

Construction

Square Footage Calculator

Use this calculator to estimate square footage for rooms and property spaces.

How this calculator works

Estimate area and perimeter for rectangular spaces in square feet.

Formula

area = length * width, perimeter = 2 * (length + width)

Step-by-step

  1. Enter length in feet.
  2. Enter width in feet.
  3. Calculate to get area and perimeter.

Example

  • Length = 14 ft
  • Width = 10 ft

Area = 140 sq ft, Perimeter = 48 ft

FAQs

Does this support irregular room shapes?

For irregular spaces, split into rectangles, calculate each area, then sum them.

Can I use meters?

Yes, but keep units consistent and interpret output in square meters.

Related Construction calculators