Three numbers to check before you buy furniture
The picture tells you whether you'll like it. These tell you whether it fits.
- Leave 14 to 18 inches between a sofa and a coffee table, and at least 24 inches for walkways, more in busy rooms [1].
- Plan at least 21 inches of clear floor in front of a bathroom vanity [2].
- A front door is usually 36 by 80 inches. Measure the opening, not the old door [3].
- Choosing a rug? The rug size calculator gives the size for your room or dining table.
- Hanging curtains? The curtain length calculator gives the length, the rod and the width for your window.
- Buying a dining table? The dining table size calculator gives the largest table your room fits and how many it seats.
- Buying a Christmas tree? The Christmas tree size calculator gives the height for your ceiling and how wide it will be.
Every picture is a preview made by AI at a believable size, not a measurement. How to check the size before you buy.
Sources
- Coffee table dimensions, Flowyline. Read October 27, 2026.
- Bathroom vanity dimensions, Aquatica. Read October 27, 2026.
- Standard door sizes, Bob Vila. Read October 27, 2026.