Square Footage Calculator
Find the total square footage of a single space or several rooms at once. Enter each length and width, pick your unit, and read the area in square feet, meters and yards.
How to calculate square footage
- Choose the unit your measurements are in: feet, inches, meters or yards.
- Enter the length and width of each space, adding rows for more rooms.
- Read the total square footage along with square meters and square yards.
Examples
Two 10 by 12 ft bedrooms
Room 1: 10 x 12 ft, Room 2: 10 x 12 ft
240 sq ft total (22.3 sq m, 26.67 sq yd)
Frequently asked questions
How do I calculate square footage?
Multiply the length by the width of each space in feet, then add the rooms together. For a 10 by 12 foot room that is 120 square feet.
Can I measure in inches, meters or yards?
Yes. Pick your unit and the calculator converts each dimension to feet first, so a 120 by 120 inch room correctly comes out to 100 square feet.
How do I find the total for multiple rooms?
Add a row for each room and enter its length and width. The tool sums every space so you get one combined square footage figure.
How many square feet are in a square meter?
One square meter is about 10.76 square feet, and one square foot is about 0.0929 square meters. The result shows both units side by side.
How do I handle an L shaped or odd room?
Split it into rectangles, enter each part as its own row, and the calculator adds the pieces into a single total square footage.
Related tools
Paint Calculator
Estimate how many gallons of paint you need for a room or wall. Enter dimensions, coats, doors and windows to get paintable area and gallons.
Flooring Calculator
Find how many boxes of flooring you need for a room. Enter length, width, box coverage and waste to get square footage, boxes and total cost.
Baseboard Calculator
Estimate linear feet and pieces of baseboard or trim for a room. Enter length and width, subtract doorways, set piece length and add waste.
BTU Calculator
Calculate the air conditioner BTU size for a room. Enter the room size and adjust for sun, occupants and a kitchen to find the right cooling capacity.
Concrete Calculator
Calculate concrete for a slab or footing. Enter length, width and thickness to get cubic yards plus 60 and 80 lb bag counts, with a waste allowance.
Deck Calculator
Estimate deck boards, joists and screws for a deck. Enter length and width, set board size, gap and joist spacing, and add waste for cuts.