Before you buy a rug, order flooring or plan a layout, you need the real numbers. This free room size calculator turns your length, width and ceiling height into floor area, wall area and a furniture-fit guide in seconds.
How to Use This Tool
- Choose feet or metres, then measure your longest wall and the wall next to it.
- Add the ceiling height, floor to ceiling.
- Press Calculate Room Size to see your floor area, perimeter and wall area.
- Use the rug size and layout guide to plan what fits before you shop.
Why It Helps
Guessing room sizes leads to rugs that swim in the space or sofas that will not fit through the door. With the exact measurements in hand, you can buy with confidence and plan a layout that actually works in the room you have.
Related tools: see all the free home decor tools, then try the Furniture Arranger to plan your layout and the Rug & Sofa Matcher to pick a rug that suits your sofa.