Bean Bag Chair Filling Guide: How Much Fill Do You Need?

Quick answer

You need roughly 1.5 to 2 cubic feet of fill per cubic foot of your bean bag chair's volume, but the best method is to add fill gradually and test the chair after each addition. Start with about 70% of the original fill amount, then add more until the chair feels supportive but still molds to your body.

A sagging bean bag chair is uncomfortable and can be frustrating to use. Over time, the filling compresses or escapes, leaving you sitting on the floor instead of floating on a cloud. Refilling your bean bag chair is a simple DIY project that restores comfort and extends the life of your chair.

This guide walks you through the entire process, from measuring your chair to choosing the right fill and adding it step by step. You'll also learn how to avoid common mistakes like overstuffing, which can make the chair too firm and put stress on the seams.

Why Bean Bag Chairs Lose Their Fill

Bean bag chairs settle for two main reasons: the filling compresses under repeated use, and some beads escape through seams or zippers over time. Foam blends can flatten permanently, while polystyrene beads may crack and lose volume. Knowing which type of fill you have helps you decide whether to top off or replace it entirely.

If your chair uses a blend of shredded foam and beads, like the ComfyBean Kid's Bean Bag Chair - Hemp Fabric, the foam may pack down while the beads stay intact. In that case, you can often revive it by adding more beads or a fresh batch of shredded foam. Check the care label or product description to identify your fill type.

• Compression is normal—most fills lose 10–20% of their volume per year.
• Escaping beads often indicate a worn zipper or seam that needs repair.

How to Calculate How Much Fill You Need

To estimate the fill volume, measure your chair's dimensions in inches and calculate its volume as if it were a cube or sphere, depending on its shape. For a typical teardrop chair, use the formula for a cylinder: π × radius² × height. Then convert cubic inches to cubic feet by dividing by 1,728. A standard adult chair holds about 3–6 cubic feet of fill; a kid's chair holds 1.5–3 cubic feet.

If math isn't your thing, use a bean bag chair fill calculator or follow the rule of thumb: replace about 70% of the original fill amount. For example, if your chair originally came with 4 cubic feet of fill, start with 2.8 cubic feet. You can always add more, but removing excess fill is messy and time-consuming.

• Measure the widest part of the chair for radius, and the height from floor to top.
• When in doubt, underfill slightly—you can always add more later.

Choosing the Right Fill for Your Chair

The two most common fills are expanded polystyrene (EPS) beads and shredded foam. EPS beads are lightweight, inexpensive, and give a classic bean bag feel, but they can be noisy and slowly deflate. Shredded foam is quieter, offers more support, and doesn't shift as much, but it's heavier and can be more expensive. Some chairs use a blend of both for the best of both worlds.

If your chair has a removable cover, you can switch fill types. For a softer, more moldable feel, use beads. For a firmer, more supportive seat, choose shredded foam. If you're refilling a kids' chair, consider a blend that includes recycled beads and foam, like the Superfill blend used in the ComfyBean Kid's Bean Bag Chair - Hemp Fabric. That blend balances support with eco-friendly materials.

• EPS beads are best for lightweight, traditional bean bag feel.
• Shredded foam is best for firm support and quiet use.
• Blends offer a compromise but may settle unevenly.

Step-by-Step Refill Process

Refilling a bean bag chair is straightforward but messy. Work in a garage or outdoor area, and have a vacuum handy. Open the zipper or seam carefully—some chairs have a childproof zipper that requires a paperclip to open. If your chair has an inner liner, open that too. Pour the fill in small batches, using a funnel made from a rolled-up piece of paper or a plastic bottle with the bottom cut off.

After each batch, zip the chair closed and sit on it to test the feel. The chair should support you without bottoming out, and you should be able to sink in slightly. If it feels too firm, remove some fill. If you sink too far, add more. Repeat until it's just right.

• Never fill a bean bag indoors without a drop cloth—beads static-cling to everything.
• Use a friend to help hold the liner open while you pour.

Common Mistakes to Avoid

The biggest mistake is overfilling. A bean bag chair should not be rock-hard; it needs some give to contour to your body. Overfilling stresses seams and can cause them to burst. Another mistake is mixing different fill types without considering weight—adding heavy foam to a chair designed for lightweight beads can make it difficult to move.

Also, don't ignore the zipper. If your chair's zipper is broken or the seam is ripped, fix it before refilling, or you'll be cleaning up beads for weeks. For chairs with removable covers, like the ComfyBean Kid's Bean Bag Chair - Hemp Fabric, you can wash the cover separately while refilling the liner.

• Overfilling shortens the life of your chair—leave room for compression.
• Repair any tears or broken zippers before adding new fill.

Refill Steps at a Glance

1. Measure your chair: Calculate volume in cubic feet using the formula for a cylinder or sphere. Multiply by 0.7 to get your starting fill amount. Checkpoint: Write down your target volume so you don't overpour.
2. Choose your fill: Select EPS beads, shredded foam, or a blend based on desired firmness and weight. For a kid's chair, a recycled blend like Superfill works well. Checkpoint: Confirm the fill is compatible with your chair's liner and cover.
3. Set up a workspace: Work outdoors or in a garage with a drop cloth. Have a vacuum and a funnel ready. Checkpoint: Keep pets and children away to avoid spills.
4. Open the liner: Unzip the outer cover and inner liner. Use a paperclip to bypass childproof zippers if needed. Checkpoint: Inspect the zipper and seams for damage before filling.
5. Add fill gradually: Pour fill in small batches through a funnel. Zip and test after each batch. Checkpoint: Stop when the chair supports you with a slight sink.
6. Test and adjust: Sit on the chair for a few minutes. Add or remove fill until it feels comfortable. Checkpoint: The chair should not bottom out or feel rock-hard.
7. Close and clean up: Zip all openings securely. Vacuum any spilled beads immediately. Checkpoint: Store leftover fill in an airtight bag for future top-offs.

Product Facts

• ComfyBean Kid's Bean Bag Chair - Hemp Fabric: Made from durable hemp fabric and filled with a signature Superfill blend of recycled beads and foam. The hemp cover is breathable and long-lasting, and the recycled fill blend provides a balance of support and eco-friendly comfort. When refilling, use a similar blend to maintain the chair's original feel.
• Kapok Throw Pillows - 100% Organic - Euro Sizes - Kapok Filled - Vegan Luxury: Filled with 100% kapok fiber, a natural, vegan alternative to down or synthetic fill. Kapok is lightweight and breathable, making it a good option for those who want a natural fill for cushions or small bean bag chairs. However, kapok may not provide the same durability as foam or beads for heavy use.

Refilling your bean bag chair is a simple way to restore comfort and avoid replacing the whole chair. By measuring carefully, choosing the right fill, and adding it gradually, you'll get a chair that feels just right. Remember to work cleanly and test as you go—your future self will thank you.