Decorative pillows can instantly make a sofa, bed, or accent chair feel more inviting. But choosing the right pillow cover size is just as important as selecting the color, texture, or pattern.
A pillow cover that is too large may look loose and flat, while one that is too small can make the insert feel overly compressed.
So, what size pillow cover should you buy?
This guide explains how to choose the right fit, create a fuller appearance, and select decorative pillow covers that complement your space.
WHY — Pillow Cover Size Makes a Difference
The right pillow cover helps decorative pillows maintain their shape and creates a more polished look.
When the cover and insert work well together, the pillow can appear fuller, softer, and more intentional.
Choosing the right size also makes it easier to mix different pillow styles without making your sofa or bed look cluttered.
Before buying a new pillow cover, consider both the size of your existing insert and the appearance you want to achieve.
HOW — Choose the Right Pillow Cover Size
1. Measure Your Pillow Insert
Start by measuring your pillow insert from seam to seam.
Common decorative pillow sizes include:
16 × 16 inches: Great for accent chairs and smaller sofas.
18 × 18 inches: A versatile choice for everyday sofa styling.
20 × 20 inches: Ideal for creating a fuller, more substantial look.
22 × 22 inches: Works well on larger sofas and spacious seating areas.
12 × 20 inches: A popular lumbar pillow size for layering.
Always check the product's listed dimensions before purchasing.
2. Choose the Fit You Prefer
For a classic fit, choose a pillow cover that matches your insert's dimensions.
For a fuller, more structured appearance, some decorators prefer using an insert approximately 1–2 inches larger than the pillow cover.
For example, a 20 × 20-inch insert may work well inside an 18 × 18-inch cover.
However, the ideal fit depends on the insert's firmness, the fabric's stretch, and the manufacturer's recommendations.
Avoid forcing an oversized insert into a delicate or tightly constructed cover.
3. Consider the Pillow Cover Material
Different fabrics create different looks.
Linen-look pillow covers offer a relaxed, natural appearance that works beautifully in neutral living rooms.
Velvet pillow covers can add richness, softness, and a more luxurious finish.
Textured woven covers introduce visual interest without requiring bold patterns.
Cotton pillow covers are versatile and can complement a wide variety of decorating styles.
Choose a material that suits both your room's aesthetic and everyday use.
How to Choose Pillow Covers for Your Sofa
The best pillow arrangement depends on your sofa size and preferred style.
Small Sofas
Try two 18 × 18-inch pillows, one on each side.
For additional variety, add a smaller lumbar pillow in the center.
Three-Seat Sofas
Consider combining 20 × 20-inch pillows with smaller 18 × 18-inch accents.
Using two sizes creates visual depth while keeping the arrangement balanced.
Sectional Sofas
Larger sectionals can accommodate a combination of 22 × 22-inch, 20 × 20-inch, and lumbar pillows.
Group pillows around the corners and seating areas rather than spreading them evenly across every cushion.
The goal is to create a comfortable, layered look without taking away too much seating space.
How to Mix Pillow Covers Without Making Your Room Look Busy
You don't need every pillow to match perfectly.
Instead, create a coordinated arrangement using three simple principles.
Keep a consistent color palette. Choose two or three complementary colors that work with your sofa, curtains, or area rug.
Mix textures. Pair smooth fabrics with woven or textured pillow covers to create depth.
Vary the sizes. Combining larger square pillows with smaller accents makes the arrangement feel more natural.
For example, a cream sofa can look beautiful with beige textured pillows, warm brown accents, and a neutral lumbar pillow.
WHAT — Which Pillow Cover Size Should You Buy?
Here's a quick reference guide:
Pillow Insert Size
Pillow Cover Size
Styling Effect
16 × 16 inches
16 × 16 inches
Classic fit
18 × 18 inches
18 × 18 inches
Balanced everyday look
20 × 20 inches
18 × 18 inches
Fuller appearance
20 × 20 inches
20 × 20 inches
Standard fit
22 × 22 inches
22 × 22 inches
Larger decorative accent
12 × 20 inches
12 × 20 inches
Lumbar support and layering
Remember that fabric construction and insert firmness can affect the final fit.
Also, check whether the pillow cover includes an insert. Many decorative pillow covers are sold separately.
Refresh Your Space with Havenique Pillow Covers
Sometimes, updating your living room doesn't require replacing your furniture.
A simple change in pillow covers can introduce new colors, textures, and a fresh sense of style.
Whether you prefer soft neutrals, elegant textures, or decorative accents, the right pillow covers can help bring your room together.
Explore Havenique Bedding & Soft Furnishings to discover decorative pillow covers that complement your sofa, bedroom, and personal style.
Choose the right size, experiment with textures, and give your favorite space a simple refresh.