Square Footage Calculator

Calculate square footage for rooms, homes, and land. Supports rectangular, circular, and triangular areas.

Shape

Length (ft)

Width (ft)

How to Use the Square Footage Calculator

Select the shape of the area you want to measure — rectangle, circle, or triangle. Enter the dimensions in feet, and the calculator will instantly show the square footage along with conversions to square meters, square yards, and acres. You can also add multiple areas together for whole-home or complex space calculations.

Common Square Footage Uses

Square footage calculations are essential for flooring, painting, landscaping, roofing, and real estate. Knowing the exact square footage helps you estimate materials, compare property values, and plan renovations. When measuring for materials like flooring or paint, always add 10-15% extra to account for waste and cuts.

Frequently Asked Questions

How do I calculate square footage?

For a rectangle, multiply length times width. For example, a room that is 12 feet long and 10 feet wide is 120 square feet. For other shapes, different formulas apply — this calculator handles rectangles, circles, and triangles.

How do I convert square feet to square meters?

Divide square feet by 10.764 to get square meters. For example, 500 square feet equals approximately 46.45 square meters.

How many square feet is an average room?

A typical bedroom is 100-200 sq ft, a living room 200-400 sq ft, a kitchen 100-200 sq ft, and a bathroom 40-100 sq ft. A standard 2-bedroom apartment is usually 800-1,100 sq ft total.

How do I calculate square footage for flooring?

Measure the length and width of each room, calculate the square footage for each, and add them together. Add 10% extra for waste and cuts. For example, 500 sq ft of floor area would need about 550 sq ft of flooring material.