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Square Footage Calculator

This square footage calculator multiplies length by width for each room and totals the area in square feet and square meters.

Room 1

Living room: 224 sq ft · 20.8103 m²

Room 2

Bedroom: 132 sq ft · 12.2632 m²

Area totals

Total square feet
356 sq ft
Total square meters
33.0735 m²

Rectangle estimate only. Split L-shapes or closets into extra rooms. Not a contractor bid.

Convert square feet and square meters

Uses the international foot (1 ft = 0.3048 m), so 1 sq ft = 0.09290304 m².

Converted area

Square feet
200 sq ft
Square meters
18.5806 m²

How to use

  1. Enter length and width and choose feet, inches, or meters for that room.
  2. Add another room for each extra rectangle, including closets and hallways.
  3. Split an L-shape into two rooms. Read each area and the running total.

Formula

Area = length × width after converting to feet (inches ÷ 12, meters ÷ 0.3048). Square meters = square feet × 0.09290304. The total is the sum of the rooms.

Example. A 16 ft by 14 ft room is 224 square feet, about 20.81 square meters. A second 10 ft by 8 ft room adds 80 square feet, for 304 square feet combined.

Frequently asked questions

How do I calculate square footage?

For a rectangle, multiply length by width in the same unit. A 16 ft by 14 ft room is 224 sq ft. This tool converts inches (÷ 12) and meters (÷ 0.3048) to feet first, then multiplies, so mixed rooms still total in square feet and square meters.

How do I convert square feet to square meters?

1 square foot equals 0.09290304 square meters, from the international foot (1 ft = 0.3048 m). Multiply sq ft by that factor, or divide sq m by it to get square feet. The converter at the bottom of the page does both.

Can I add more than one room?

Yes. Add a room for each rectangle. The running total is the sum of every room’s area. Name rooms if you want (living room, hallway). Remove a room if you added one by mistake; at least one room must remain.

How do I enter inches versus feet?

Set Units to Feet, Inches, or Meters for that room. A 12 ft 6 in wall can be 12.5 feet or 150 inches. Length and width for a room share one unit. Use a second room if another space is measured in meters.

What about L-shaped rooms or closets?

Treat an L-shape as two rectangles and add both. Closets, hallways, and alcoves are extra rooms. Irregular or circular spaces are not modeled here; this is length × width only.

Is this a materials or contractor estimate?

No. It reports area only. Flooring, tile, and paint need extra for waste, pattern match, and cuts. Confirm coverage with the product label or a contractor. Numbers stay in your browser.

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