Best Throw Pillow Sizes for Armchairs: Style and Comfort Made Easy

Finding the best throw pillow size for armchairs can make all the difference between a stylish statement piece and an awkwardly accessorized seat. Whether you’re looking to enhance comfort, create visual harmony, or simply refresh your space, the right pillow cover is key.

But with so many sizes to choose from, how do you know which one will look just right? In this guide, we’ll walk you through the most popular throw pillow sizes for armchairs, show you how to match them to different chair styles, and offer expert tips for creating a beautifully balanced look.

Get ready to transform your favorite reading chair, accent seat, or classic armchair with our simple yet effective pillow sizing tips. Let’s dive in!

Why Pillow Size Matters for Armchairs

Choosing the best throw pillow size for armchairs is not just about looks — it’s about balancing comfort and style. An armchair often serves as a cozy reading spot, a design focal point, or even a statement piece in your living room. The wrong size pillow can make it feel cluttered or awkward, while the right size enhances both the chair’s appeal and your comfort.

Many people make the mistake of using oversized pillows on compact chairs, which can overwhelm the space. On the other hand, using too-small pillows on a wide, deep-seated armchair makes the setup look incomplete. The secret lies in choosing a size that fits the proportions of your chair while also complementing your room's decor.

By selecting the perfect throw pillow size, you’ll make your armchair more inviting and stylish. Plus, you’ll love how effortlessly it blends into your overall decor. Let’s look at the most popular sizes and how they can elevate your armchair setup.

Best Pillow Sizes for Armchairs: A Quick Guide

Choosing the best throw pillow size for armchairs doesn’t have to be complicated. Whether you’re looking for comfort, style, or a bit of both, understanding standard pillow sizes can help you make the right choice. Below are the most popular sizes and how they work with different types of armchairs.

Popular Throw Pillow Sizes for Armchairs

• 16x16 inch pillow cover:
  Ideal for compact armchairs or accent chairs. These smaller pillows add just the right touch without overwhelming the space. Perfect for creating a minimalist look or adding a pop of color to a subtle chair.
  
  

• 18x18 inch pillow cover:
  The most versatile and commonly used size for armchairs. Great for medium-sized chairs, this size balances comfort and visual appeal. It’s the go-to choice for both classic and modern armchairs.
  
  

• 20x20 inch pillow cover:
  Best suited for larger or deep-seated armchairs, such as reading chairs or lounge chairs. This size makes a bold statement while offering excellent back support.
  
  

• 12x20 inch lumbar pillow:
  Designed specifically to support your lower back, this shape works well in almost any armchair. It adds both comfort and a stylish, streamlined look.
  
  

• Euro sham cover (26x26 inch):
  Typically used on beds, but if you have a large armchair or a cozy reading nook, this oversized pillow can add plushness and a luxurious feel.
  
  

💡 Pro Tip: For a plump, full look, choose a pillow insert that is 1-2 inches larger than the pillow cover. This ensures that your pillow doesn’t look flat or saggy.

Pairing Pillow Sizes with Armchair Styles

Different armchairs call for different throw pillow sizes. Whether your style is modern, classic, or eclectic, matching the right pillow size with your armchair can elevate the entire look. Let’s explore how to pair pillows with popular armchair types.

🛋️ Classic Armchair

• Recommended Pillow Size: One 18x18 inch throw pillow cover paired with a 12x20 inch lumbar pillow.
  
  

• Why it Works: The square pillow adds a balanced look, while the lumbar pillow provides comfortable lower back support.
  
  

• Style Tip: Choose coordinating colors or patterns for a harmonious appearance.
  
  

📚 Oversized Reading Chair

• Recommended Pillow Size: One 20x20 inch throw pillow cover plus a 26x26 inch euro sham cover for extra plushness.
  
  

• Why it Works: This combination creates a cozy, lounge-worthy setup. The larger sizes fill the space without looking sparse.
  
  

• Style Tip: Opt for textured fabrics like velvet or boucle to enhance the inviting feel.
  
  

✨ Accent Chair

• Recommended Pillow Size: One 16x16 inch cushion cover or a small lumbar pillow.
  
  

• Why it Works: These sizes complement the smaller scale of accent chairs without overwhelming the design.
  
  

• Style Tip: Use a bold color or pattern to make a statement.
  
  

🌿 Scandinavian Chair

• Recommended Pillow Size: One 18x18 inch linen pillow cover.
  
  

• Why it Works: Simple and understated, this size matches the minimal aesthetic typical of Scandinavian design.
  
  

• Style Tip: Stick to neutral tones or muted pastels for a calming effect.
  
  

👑 Modern Wingback Chair

• Recommended Pillow Size: One 20x20 inch geometric pillow cover.
  
  

• Why it Works: The structured, high-back design pairs well with a bold, graphic pattern.
  
  

• Style Tip: Combine with a solid lumbar pillow for added depth.
  
  

💡 Expert Advice: Mix and match textures for a more dynamic look. For example, pair a smooth linen pillow with a soft velvet lumbar pillow to create visual interest.

Shop by Size: Find Your Perfect Armchair Pillow

Now that you know the best throw pillow sizes for armchairs, it’s time to find the perfect match for your own space. At Pillowhan, we make it easy to shop by size, color, and pattern — so you can find exactly what you need to style your armchair beautifully.

🗂️ Shop by Size:

• 16x16 inch pillow covers: Great for accent chairs or smaller armchairs. Explore our Beige & Neutral Pillow Covers or Green & Olive Pillow Covers for a touch of subtle style.
  
  

• 18x18 inch pillow covers: Our most versatile size. Discover designs in Blue & Navy Pillow Covers or Black & Gray Pillow Covers to complement classic armchairs.
  
  

• 20x20 inch pillow covers: Ideal for larger armchairs and reading chairs. Try our Pink & Red & Purple Pillow Covers for a bold pop of color.
  
  

• 12x20 inch lumbar pillow covers: Perfect for adding comfort and support. Choose from our Rust & Terracotta Pillow Covers or Brown & Camel Pillow Covers for a cozy, warm feel.
  
  

• 26x26 inch euro sham covers: Oversized comfort for lounge and reading chairs. Browse our luxurious Velvet Pillow Covers for a plush, elegant touch.
  
  

🎨 Shop by Pattern:

• Add character to your armchair with patterned pillow covers:
  
  

• Geometric Pillow Covers for a modern edge
  
  

• Ethnic & Boho Pillow Covers for a relaxed, eclectic vibe
  
  

• Striped Pillow Covers for a classic, versatile look
  
  

• Boucle Pillow Covers for a cozy, textured feel
  
  

💡 Style Tip: Combine a solid color pillow with a patterned one for a balanced, stylish look. Mixing textures and patterns keeps your armchair visually interesting and comfortable.

Pro Styling Tips: Arranging Pillows on Armchairs

Arranging throw pillows on an armchair is an art. The goal is to create a setup that looks intentional and stylish while also feeling comfortable. Whether you prefer a minimalist look or a more layered arrangement, these tips will help you achieve the perfect balance.

1. Keep It Simple

When in doubt, go with one 18x18 inch throw pillow cover centered on the armchair. It’s classic, clean, and works well with both modern and traditional styles. For an extra touch, add a 12x20 inch lumbar pillow in front for contrast.

2. Layer Different Sizes

For larger or deep-seated armchairs, combine one 20x20 inch pillow cover at the back with a 16x16 inch pillow cover or a lumbar pillow in front. This creates depth and makes the chair look more inviting.

3. Mix Patterns and Solids

Choose one patterned pillow and pair it with a solid color that matches or complements the pattern. For example:

• A Geometric Pillow Cover with a solid Gray Pillow Cover
  
  

• A Boucle Pillow Cover with a Rust & Terracotta Pillow Cover
  This approach keeps your design balanced and visually appealing.
  
  

4. Add Texture for Interest

Textures add warmth and make the armchair feel cozy. Mix smooth fabrics like linen with plush ones like velvet or boucle. A velvet lumbar pillow paired with a woven texture pillow cover makes a stylish statement.

5. Match the Room's Color Scheme

To create a cohesive look, pick a pillow cover color that ties into other accents in the room, such as the rug, curtains, or wall art. This creates harmony and makes your armchair blend seamlessly with the rest of your decor.

💡 Quick Tip: Use an odd number of pillows (like 1 or 3) for a natural, balanced look. Arrangements with odd numbers are more visually pleasing than even ones.

Final Thoughts: Elevate Your Armchair with the Right Pillow

Finding the best throw pillow size for armchairs is all about balancing style and comfort. Whether your goal is to create a cozy reading nook or to make a stylish statement with your accent chair, the right pillow size makes all the difference.

From 16x16 inch pillow covers that add a subtle touch to compact chairs to 20x20 inch covers that bring boldness to larger armchairs, there’s a perfect size for every space. And don’t forget the comfort factor — a well-placed lumbar pillow can make your armchair both stylish and supportive.

At Pillowhan, we take pride in offering a wide range of handmade, washable, and zippered pillow covers to fit every armchair and every style. Our Shop by Color and Shop by Pattern collections make it easy to find the perfect match for your space.

Ready to style your armchair like a pro? Explore our curated collections today and transform your favorite chair into a design centerpiece!