Square Footage Calculator
Calculate total square footage and price per square foot
Calculator
Room Breakdown
Common Room Sizes (US)
How to Use
Calculate total square footage for rooms and properties
Select unit of measurement
Choose square feet or square meters
Add rooms
Create entries for each room or area
Select room shape
Choose rectangle, triangle, or circle
Enter dimensions
Input length, width, or radius as appropriate
View total
See individual room areas and total square footage
Area Formulas
Rectangle: Length x Width Triangle: (Base x Height) / 2 Circle: Pi x Radius^2
Different shapes require different formulas. Sum all areas for total square footage.
Frequently Asked Questions
For rectangular rooms: Length x Width = Square Feet. For example, a 12ft x 15ft room is 180 sq ft. For irregular shapes, break into rectangles and triangles, calculate each, and sum. For circles: Pi x Radius squared (3.14159 x r^2).
Living area typically includes all heated/cooled finished space: bedrooms, living areas, kitchens, bathrooms. Excluded: garages, unfinished basements, attics, covered porches, and outdoor areas. Standards vary by region - some include finished basements.
Price Per Sq Ft = Total Price / Total Square Feet. A $400,000 home with 2,000 sq ft = $200/sq ft. This metric helps compare homes of different sizes in the same market, but remember condition, lot size, and location also matter.
U.S. average new home: ~2,300 sq ft. Median existing home: ~1,800 sq ft. Size varies by region - Northeast homes average smaller than Sunbelt. Studio apartments: 400-600 sq ft. 2-bedroom apartments: 850-1,100 sq ft.