How to Measure Furniture for a Better-Fitting Slipcover

A great slipcover starts with careful measurements. You do not need to know upholstery terms or measure like a professional. You just need to slow down, follow the shape of the furniture, and measure the path the fabric will actually take.

The main idea is simple: do not measure shortcuts. Measure the furniture the way fabric will cover it.

Start with the right tape measure

Use a flexible tape measure, not a ruler, yardstick, or level. Furniture has curves, cushions, soft corners, and padding. A flexible tape lets you follow the real shape instead of guessing across it.

Flexible tape measure and measuring tools for furniture slipcover measurements
Use a flexible tape measure so you can follow curves, seams, cushions, and soft edges accurately.

Measure the fabric path, not the shortest distance

When measuring cushions, pillows, arms, backs, or rounded corners, keep the tape measure flat against the fabric. Let it follow the seams, curves, and edges naturally.

If the tape lifts into the air or cuts across a curve, the measurement will usually be too small. Fabric has to travel around the shape, so your tape measure should too.

Square and rectangular pillow measurement guide showing how to measure along the pillow edges and seams
For pillows and cushions, measure along the sewn edges and seams. Do not flatten, stretch, or guess across rounded corners.

If a corner is rounded instead of sharp, measure to the seam — not where you wish the corner was. Cushions have opinions. We just measure them honestly.

Keep drape measurements vertical

Some measurements are not about the furniture frame. They are about how the slipcover hangs.

For example, a back overlay or drape measurement tells us how the fabric should fall down the back of a sofa. If you are ordering separate cushion covers, remove the seat cushions first and measure from the top of the sofa base under the cushions. If you are not ordering separate cushion covers, measure from the point where the seat meets the backrest.

Start at the inside back corner and measure straight down to the floor. Keep the tape measure vertical. Do not follow the angle or curve of the backrest. If the backrest leans backward, still measure from the highest back point straight down to the floor.

Sofa measurement guide showing a vertical back overlay or drape measurement from the inside back down to the floor
Back overlay and drape measurements should fall straight down. The tape should stay vertical, even if the backrest leans.

Use decimals, not fractions

Please enter measurements as decimals. This keeps everything clearer for cutting and sewing. For example, 32 1/2 inches becomes 32.5. Or, 18 1/4 inches becomes 18.25. While you're welcome to include 1/8 measurements (down to 0.125), you're generally going to want a quarter inch to ensure the cover doesn't fit too tight or pull at the seams. So, when in doubt, round up.

Measurement tip showing how to convert inch fractions to decimals
Enter fractions as decimals. Half an inch is .5, a quarter inch is .25, and three-quarters is .75.

Helpful furniture terms

Here are a few words you may see in our measurement guides.

Base

The base is the flat part of the sofa or furniture underneath the seat cushions. If you remove the cushions, it is the platform they sit on.

Furniture base measurement example

Backrest

The backrest is the upright back section you lean against. Some backrests are straight, and some lean backward. For drape measurements, measure straight down vertically rather than following that lean.

Furniture backrest measurement example

Skirt

A skirt is the fabric that hangs down toward the floor at the bottom of a slipcover. Skirt and drape measurements help us understand how long that hanging fabric should be.

Slipcover skirt measurement example

Seat width

Seat width means the open sitting space between the armrests. It is not the full outside width of the sofa or chair. Think of it as the space where you actually sit.

Seat width measurement example showing the space between armrests

Take your time on the first piece

The first cushion, chair, or sofa section usually takes the longest. That is normal. Once you understand how the seams, curves, and drape measurements work, the rest gets much easier.

And if something looks odd, soft, sloped, or uneven, do not panic. Furniture is rarely perfect. We build around those quirks every day.

Need help? Email sales@slipcovershop.com or call (718) 478-5234 and we can walk through it with you over video.