Daily utilities

Square Footage Calculator

Use OmniCalc's square footage calculator to estimate area for rooms and surfaces in square feet, with quick conversions into square meters and square yards.

Square footage calculator

Estimate room and surface area in square feet.

Switch between rectangle, triangle, and circle modes to calculate square footage quickly, with square meters and square yards alongside the main result.

Advertisement

Why this result matters

What this calculator helps you answer

A clean approved practical-measurement tool that reframes area calculations around room, flooring, and surface-planning intent. Use the tool above to enter a few clear inputs and get a practical answer you can use right away.

This square footage calculator helps users estimate room and surface area for flooring, carpet, paint, tile, and layout planning. Choose a common shape, enter your measurements in feet, and get square footage plus quick area conversions in one place.

Formula and method

How the calculation works

The calculator uses standard area formulas for rectangles, triangles, and circles, then converts the square-foot result into square meters and square yards.

Example

Example square footage estimate

If you enter a rectangular room that is 20 feet by 15 feet, the calculator returns 300 square feet along with quick metric and square-yard conversions.

FAQ

Common questions about this calculator.

Short answers to the questions people often ask before or after using the tool.

Question

What is square footage used for?

Square footage is commonly used for flooring, paint, carpet, tile, room planning, and property-size estimates.

Question

Can I estimate circular or triangular spaces too?

Yes. This calculator supports rectangle, triangle, and circle modes so you can estimate more than simple rectangular rooms.

Question

Why show square meters and square yards too?

Those extra units help when materials, contractors, or property listings use different area conventions.

Related calculators

Related calculators

If the next question is close to this one, these are the best pages to open next.

Daily utilities

Concrete Calculator

Use OmniCalc's concrete calculator to estimate concrete needs in cubic yards, cubic feet, and approximate bag counts for common project shapes.

Inputs7
Results4
Open calculator

Daily utilities

Roofing Calculator

Use OmniCalc's roofing calculator to estimate roof surface area, roofing squares, and shingle bundles from roof dimensions, pitch, and waste allowance.

Inputs4
Results4
Open calculator

Daily utilities

Tile Calculator

Use OmniCalc's tile calculator to estimate how many tiles you may need from room dimensions, tile size, and waste allowance.

Inputs5
Results4
Open calculator

Daily utilities

Stair Calculator

Use OmniCalc's stair calculator to estimate a straight stair layout from rise, tread, and width inputs.

Inputs5
Results6
Open calculator
Advertisement
Back to daily utilities calculators