Question 1

What is an area calculator?

Accepted Answer

A tool that computes the size of a surface for shapes like rectangles, circles, triangles, and more.

Question 2

Which units can I use?

Accepted Answer

Enter any supported length units; the tool returns area in square units (e.g., ft², m²) and can convert between systems.

Question 3

How do I find the area of a room with alcoves?

Accepted Answer

Break it into rectangles, compute each area, and sum the results. Subtract the area of voids like chimneys or stairs.

Question 4

What about circles and sectors?

Accepted Answer

Use A=πr² for full circles; sectors use A=½·r²·θ with θ in radians (or A=(θ/360)·πr² if θ is degrees).

Question 5

Do I need to include waste in material estimates?

Accepted Answer

For flooring/paint/tile, add 5–15% for cuts and waste depending on layout complexity.

Area Calculator — Square Footage & Shape Area Calculator