Formula and Assumptions

Room area = length x width.

Actual conditions, local rates, product labels, and contractor recommendations can change the final quantity or cost.

Example Calculation

A 12 x 10 ft room is 120 sq ft.

Tips

  • Measure wall to wall.
  • Split L-shaped rooms into rectangles.
  • Use square footage for paint, flooring, rugs, and cleaning estimates.

FAQ

How do I calculate room square footage?

Multiply room length by room width.

What if the room is not rectangular?

Split it into rectangles and add the areas together.

Can I use decimals?

Yes, enter decimal feet for more precise measurements.

Does this estimate materials?

Use the paint or flooring calculators after calculating area.