Area Rugs · 6 min read · October 2, 2026
How to Measure a Space for Custom Rugs (and Write a Spec a Factory Can Use)
Most rug measuring guides stop at length and width. If you're ordering custom rugs in bulk, the measurement has to become a spec a factory can cut from.
Search for how to measure for custom rugs and you'll get the same advice ten times: measure the room, leave a border, tape it out. That's fine for one living room. It doesn't help much when you're a retailer sizing a collection, a designer fitting a hotel corridor, or an online seller who needs 300 rugs cut to an outline.
For those orders the tape measure is only step one. The measurement has to turn into a spec that someone on a cutting table can follow without phoning you.
The short answer
To measure for a custom rug, measure the usable floor area at floor level, subtract the border you want to leave, mark every obstacle and door swing, then record the finished rug size in one unit with the shape, orientation and thickness limit noted. Send that with a sketch or outline file, not just two numbers.
Step 1: Measure the floor, not the room
Room dimensions and rug dimensions are different things. Measure at floor level, wall to wall, and take each direction in at least two places. Walls are rarely parallel, and a rug cut to the widest point won't sit flat at the narrowest.
Write down the smaller figure for each direction. Then note what sits on that floor: built-in cabinets, floor vents, a hearth, a column. Anything the rug can't cross is part of the measurement.
- Use a steel tape or laser measure. Fabric tapes stretch.
- Measure the floor itself, below skirting boards and trim.
- Photograph the space with the tape visible. It settles arguments later.
Step 2: Decide the border and the furniture rule
Designers work from a few rules of thumb, and they're a sensible starting point: leave roughly 18 to 24 inches of bare floor between rug and wall in a normal room (less in a small one), and in a dining area let the rug run about 24 inches past the table so chairs stay on it when pulled out.
Commercial spaces bend those rules. A hotel corridor runner might leave only a few inches each side. A retail feature rug is sized to the display, not the walls. So decide what the rug is for first, then set the border, and mark the finished size on the floor with painter's tape. Walk on it. Open the doors over it.
Step 3: Check door clearance against rug thickness
This is the step people skip, and it's the one that causes returns. A rug that sits under a door swing has to fit under the door.
MatCore area rugs have a total thickness of about 0.23 to 0.35 inches (roughly 6 to 9 mm), depending on the face and backing. Measure the gap under every door that opens across the rug and compare. If the gap is tight, either stop the rug short of the swing or tell your supplier the maximum thickness so the construction is chosen to suit.
Step 4: Measuring for irregular and custom-shape rugs
Two numbers can't describe a curve. For an irregular custom-shape rug, or a rectangle with a notch cut around a column, you need an outline.
There are two reliable ways to capture one:
- Paper template: tape kraft paper over the floor area, trace the edge and the obstacles, cut it out and check it lies right. Then photograph it flat with a tape measure in frame, or measure it on a grid.
- Dimensioned drawing: sketch the shape and mark every straight run, every radius and the position of each cut-out from two fixed edges. A vector file (AI, PDF, DXF) is better still.
- Either way, mark which side is the face and which edge goes against the wall. A mirrored outline is the most common custom-shape mistake.
- Keep curves generous. Very tight inside corners and thin slivers are hard to cut and bind cleanly. Our irregular shaped rugs guide covers which outlines cut well.
Step 5: Turn the measurement into a spec
Here's what a factory needs to quote and cut a custom rug without guessing. Put it on one page:
- Finished size, in one unit. Don't mix feet-and-inches with centimetres across a single order. If you write 5x7, say whether that's feet.
- Which dimension is the length, and which way the artwork reads.
- Shape: rectangle, oval or custom outline, with the file or template attached.
- Maximum total thickness, if doors or thresholds limit it.
- Face and backing preference. MatCore rugs use faux-wool, flannel or nylon faces on a non-slip TPR or latex backing.
- Floor type the rug will sit on (hardwood, tile, vinyl, carpet).
- Quantity per size. And ask the supplier to state the size tolerance in writing, because a cut textile is never exact to the millimetre.
Sizing a product line instead of a room
If you're building a retail or e-commerce range, you aren't measuring one space. You're choosing sizes that fit most of your customers' spaces. Start with the sizes buyers already search for: 3x5, 4x6 and 5x7 feet are the common ones in our range. Then add custom sizes only where you can see demand, such as a runner size for hallways or a round for kids' rooms.
Fewer sizes at higher quantity is usually easier to quote and stock than many sizes at low quantity. If standard rectangles keep leaving gaps in the spaces you sell into, that's the signal to go custom, which we covered in why standard rug sizes don't fit commercial spaces.
Mistakes that cost a reorder
- Measuring wall to wall and ordering that exact size. The rug buckles against the skirting.
- Forgetting the door swing and the rug thickness.
- Sending an outline with no scale reference.
- Approving artwork without checking it against the final size. A logo centred on a 4x6 proof isn't centred on a 5x7.
- Giving sizes in inches for one SKU and centimetres for the next.
FAQ
What sizes can custom rugs be made in? Common sizes are 3x5, 4x6 and 5x7 feet, and MatCore also makes fully custom sizes and shapes (rectangle, oval or your own outline) to your specification.
How much floor should show around a rug? A common rule of thumb is 18 to 24 inches in a standard room and less in small rooms or corridors. For commercial spaces, size the rug to its job rather than to the rule.
Do I need a template for a non-rectangular rug? Yes. Send a dimensioned drawing, a vector outline or a traced paper template with a scale reference.
How do I confirm the size before production? You'll get a free digital proof showing the artwork at the ordered size before bulk production. Stock items typically ship in 7–15 days and custom orders in 20–30 days, and MOQ is confirmed in the quotation. Send us your sizes and outline to start.
This article is general industry guidance. For advice on a specific project, contact our team.
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