Most of the questions we answer on the phone come down to a measurement. Will this sofa fit through my door? What size rug goes in this room? How tall a stool for this island? We have written long guides for each of those, but sometimes you just want the number. These tools do the math using the same rules our guides explain. They are free, they need no account, and the calculations run in your browser, so we never see the measurements you type in.
Room Planning
Rug Size Calculator
Enter your room and your sofa, dining table or bed. Get the standard rug size that fits, how much floor shows at the walls, and a to-scale drawing.
Open the calculator →Dining Table Size Calculator
Enter the dining room size and how many people you want to seat. Get the largest table that fits with room to pull chairs out, and how many it seats.
Open the calculator →Bar & Counter Stool Calculator
Enter your counter height and length. Get the right seat height, how many stools fit, where to put each one, and whether your overhang and walkway work.
Open the calculator →Will It Fit? Doorway Checker
Enter your narrowest doorway and the piece’s depth, height and diagonal. Find out whether a sofa, recliner or dresser will make it in before delivery day.
Open the checker →Electronics & Appliances
TV Size & Viewing Distance
Enter how far you sit from the screen and your wall space. Get the right screen size, how wide the TV really is, and how high to mount it.
Open the calculator →Dehumidifier & Air Purifier Sizing
What pint size your basement needs under the 2019 ratings, and the CADR an air purifier needs for your room, ceiling height and allergies.
Open the calculator →Where the Numbers Come From
Every rule in these tools is written out on the tool’s own page and in the related buying guide, so you can check our work. Where an industry standard exists, we use it: SMPTE and THX viewing angles for TVs, AHAM’s CADR guidance for air purifiers, the Department of Energy’s 2019 dehumidifier test procedure, and widely used kitchen design clearances for stools and dining tables. Where there is no standard, such as how much floor should show around a rug, we use the numbers that have worked for our customers over 30 years and say so.
Have an idea for a tool, or got a result that seems off? Let us know. Several of these tools started as questions customers kept asking.