If you’re sourcing flexible packaging for snacks, coffee, rice, spices or small parts, getting the pillow bag size right is one of the most important decisions you’ll make. Choose too big and you’re paying for air. Choose too small and you’ll deal with burst seals, poor shelf appearance and rejected fills. This guide covers everything you need — standard pillow bag dimensions, how to size by product type and weight, material options, and the most common mistakes to avoid.
What Is a Pillow Bag?
A pillow bag (also called a pillow pouch) is a flat flexible pack with three defining features:
- A back seal running vertically down the center or side
- Top and bottom seals crimped to create the characteristic pillow shape
- Front and back panels for branding, product info and barcodes
Most pillow bags are formed and filled on VFFS (vertical form-fill-seal) machines, though they’re also available as pre-made pouches. They’re the go-to format for high-volume, cost-conscious packaging — from 20 g snack packs all the way up to 10 kg bulk grain bags.
Why Pillow Bag Size Matters More Than You Think
Size affects three things that hit your bottom line directly:
1. Product protection
The right internal volume maintains seal integrity and supports barrier performance. For coffee, spices and moisture-sensitive products, pairing correct pillow bag dimensions with the right film is what keeps your product fresh.
2. Material cost
Every extra centimeter of film costs money — multiplied across millions of packs. Oversized bags mean you’re shipping air. Undersized bags cause sealing failures, rework and returns. Getting size right typically reduces film usage by 5–15% without changing anything else.
3. Line efficiency
Bags that are too tight or too long cause jams, poor forming and inconsistent weights on VFFS lines. The correct pillow bag width and length keeps machines running at full speed.
Standard Pillow Bag Size Chart
Here are the most commonly used back seal pillow bag dimensions for food and dry goods, in both metric and imperial:
By Product Type and Fill Weight
| Product | Fill Weight | Width × Length (mm) | Width × Length (in) |
|---|---|---|---|
| Chips / snacks | 20–30 g (0.7–1 oz) | 100 × 150 mm | 4″ × 6″ |
| Chips / snacks | 56–85 g (2–3 oz) | 125 × 200 mm | 5″ × 8″ |
| Chips / snacks | 140–170 g (5–6 oz) | 150 × 250 mm | 6″ × 10″ |
| Coffee (ground/beans) | 120–170 g (4–6 oz) | 120 × 240 mm | 4.7″ × 9.5″ |
| Coffee (ground) | 227–340 g (8–12 oz) | 150 × 290 mm | 6″ × 11.5″ |
| Tea sachets | 10–20 sachets | 110 × 200 mm | 4.3″ × 7.9″ |
| Spices / powders | 100–250 g | 120 × 200 mm | 4.7″ × 7.9″ |
| Spices / powders | 500 g | 150 × 250 mm | 6″ × 10″ |
| Rice / grains | 1 kg | 190 × 305 mm | 7.5″ × 12″ |
| Rice / grains | 2 kg | 230 × 355 mm | 9″ × 14″ |
Quick Size-by-Weight Reference
| Fill Weight | Recommended Size (W × L) |
|---|---|
| 20–40 g | 100 × 150 mm (4″ × 6″) |
| 40–80 g | 120 × 190 mm (4.7″ × 7.5″) |
| 80–150 g | 125 × 200–230 mm (5″ × 8–9″) |
| 150–300 g | 150 × 240–250 mm (6″ × 9.5–10″) |
| 300–500 g | 160 × 280 mm (6.3″ × 11″) |
| 1 kg | 190 × 305 mm (7.5″ × 12″) |
Important: These are starting points, not fixed rules. Product density changes everything — see the section below.
How to Choose the Right Pillow Bag Size
Step 1 — Know Your Product Volume, Not Just Weight
Weight alone won’t get you the right size. A 100 g bag of potato chips and a 100 g bag of rice need completely different pillow pouch dimensions.
The fastest way to get a real volume number:
- Weigh out your target fill weight
- Pour it into a measuring jug
- Record the volume in ml (1 ml = 1 cm³)
- Shake it once to simulate settling
Step 2 — Factor in Product Density
| Density Type | Examples | Sizing Adjustment |
|---|---|---|
| Low density | Chips, puffed snacks, cereal | Go wider and longer for the same weight |
| Medium density | Coffee beans, pet treats, crackers | Standard sizes usually work well |
| High density | Rice, flour, salt, fine powders | Can drop one size down |
Step 3 — Calculate Bag Length from Volume
A practical formula for estimating pillow bag length:
Fill height (H) = Volume ÷ (Width × Fill thickness)
Where fill thickness ≈ 0.3–0.5 × bag width for most products.
Then add:
- Bottom seal: 10–15 mm
- Top seal: 10–15 mm
- Headspace: 20–40 mm (more for snacks and gas-flushed products)
Total bag length = H + seals + headspace
Step 4 — Cross-Check Against Your Machine
Check your VFFS or pillow pack machine for:
- Maximum and minimum film web width (this sets your bag width ceiling)
- Maximum jaw stroke (this sets your bag length limit)
- Former collar size available
If the size doesn’t fit the machine, nothing else matters.
Pillow Bag Size by Product Type
Chips, Crackers and Dry Snacks
Snacks are low density and fragile, so you need more room than the weight suggests.
| Fill Weight | Size (W × L) | Notes |
|---|---|---|
| 20–30 g | 80 × 140 mm | Single-serve, vending |
| 60–85 g | 110 × 180 mm | Grab-and-go |
| 110–140 g | 130 × 220 mm | Sharing packs |
| 170–225 g | 160 × 270 mm | Family size |
Keep 25–40% headspace for nitrogen flushing. Go slightly wider for fragile chips to reduce breakage.
Coffee and Tea
Coffee needs more than just correct dimensions — barrier film and sometimes a one-way valve are essential.
| Coffee Weight | Size (W × L) | Notes |
|---|---|---|
| 60–85 g | 100 × 190 mm | Sample / hotel packs |
| 227 g (8 oz) | 130 × 260 mm | Ground or whole bean |
| 340 g (12 oz) | 140 × 280 mm | Specialty roasters |
| 454 g (1 lb) | 160 × 320 mm | Standard retail |
For loose leaf tea: 100 × 200 mm (50–100 g). For 20–25 tea bags: 120 × 220 mm.
Pair correct pillow bag size with high-barrier laminates (PET/AL/PE or PET/MPET/PE) and degassing valves for specialty coffee.
Spices and Powders
Powders are dense, so bags run smaller than you’d expect.
| Fill Weight | Size (W × L) | Notes |
|---|---|---|
| 15–30 g | 70 × 120 mm | Retail sachets |
| 60–100 g | 90 × 160 mm | Table spices |
| 200–300 g | 120 × 210 mm | Refill packs |
Always size from volume, not just weight. Add extra headspace for fine powders to keep the seal area clean — powder contamination is one of the top causes of seal failures.
Rice, Grains and Beans
These are predictable to size because density is consistent and product flows well.
| Fill Weight | Size (W × L) | Notes |
|---|---|---|
| 454 g (1 lb) | 130 × 250 mm | Small retail |
| 0.9 kg (2 lb) | 160 × 300 mm | Mid-size retail |
| 2.27 kg (5 lb) | 210 × 400 mm | Family / wholesale |
| 4.5 kg (10 lb) | 260 × 500 mm | Bulk export |
Use stronger laminates for larger bags — single-layer PE isn’t enough for heavy rice packs in export shipping.
Non-Food: Pet Treats, Hardware and Accessories
Pillow pouch packaging isn’t just for food. It works well for cost-effective non-food packs too.
| Product | Size (W × L) |
|---|---|
| Pet treats 50–100 g | 110 × 180 mm |
| Pet treats 200–300 g | 150 × 250 mm |
| Small hardware / screws | 80 × 120 mm |
| Larger parts / accessories | 120 × 180 mm |
| Cables / flat accessories | 110 × 160 mm |
Clear or semi-clear film works well here — visibility sells product in this category.
Headspace Guide
Headspace is functional, not wasted space. Here’s how much to plan for:
| Product Type | Recommended Headspace |
|---|---|
| Chips / puffed snacks | 25–40% of bag volume |
| Coffee (whole bean) | 15–25% |
| Ground coffee / powder | 10–20% |
| Rice / dense grains | 10–15% |
| MAP / nitrogen-flushed | Add extra 10–20% on top |
Too little headspace = burst seals, poor gas flush, over-stretched film. Too much = wasted film and poor shelf appearance.
Film Materials and Thickness
The film structure you choose affects how your pillow bag dimensions behave on the line and on the shelf.
| Film Type | Best For | Typical Thickness |
|---|---|---|
| OPP/CPP | Snacks, dry foods, fast VFFS lines | 40–60 µm |
| PET/PE | Mid-barrier, general food | 60–75 µm |
| PET/AL/PE | Coffee, tea, aroma-sensitive | 75–100 µm |
| PET/MPET/PE | High-barrier, moisture-sensitive | 70–90 µm |
| Mono-PE / Mono-PP | Recyclable packaging | 80–120 µm |
Thickness rule of thumb:
- Thicker film = stiffer pack, better shelf presence, but slightly higher cost and may need minor size adjustment (2–5 mm wider)
- Thinner film = softer, lower cost, better for compact, dense products
For export markets requiring food safety documentation, look for ISO 22000-certified food grade pillow bags with full COA and migration test records.
Filling Method Tips
Your filling method should influence how you set the pillow bag dimensions.
| Filling Method | Sizing Recommendation |
|---|---|
| Manual | Go slightly wider and longer for easy loading. More headspace. |
| Semi-automatic | Use standard sizes. Moderate length for funnel/scoop access. |
| Fully automatic VFFS | Follow machine spec exactly. Tighter sizing, consistent seals. |
| High-speed VFFS | Slightly shorter length, stiffer film, avoid non-standard sizes. |
| MAP / nitrogen flushing | Add 10–25% extra headspace. Wider bag for delicate products. |
For high-speed lines, always test 2–3 nearby sizes and pick the most stable at peak speed before committing to bulk orders.
Standard vs Custom Pillow Bag Sizes
| Factor | Standard Sizes | Custom Sizes |
|---|---|---|
| Lead time | Faster (stock tooling) | 3–5 weeks for new sizes |
| MOQ | Lower | Higher |
| Cost | Lower per unit | Slightly higher upfront |
| Best for | Testing, common products, high-volume commodity SKUs | Unique fill volumes, retail fixture requirements, waste reduction |
| Printing | Available | Full custom branding |
Start standard, then go custom. For most new projects, I’d recommend testing with standard pillow bag sizes, then switching to custom dimensions once you’ve confirmed the right fill volume and machine settings.
At YLTPACK (established 2005), we carry ready tooling for the most common pillow bag width and length combinations, which means faster lead times and better pricing on standard runs. Once you’re ready to optimize, we move to custom.
Common Sizing Mistakes to Avoid
1. Sizing by weight alone
100 g of chips and 100 g of rice need completely different bags. Always factor in density and actual volume.
2. Not accounting for seal area and headspace
Reserve 10–15 mm per seal and enough headspace for your filling conditions. Skipping this causes split seals and fill-weight rejects.
3. One bag size for all SKUs
Forcing a single size across products with different densities results in half-empty bags for light products and burst packs for dense ones. Define 2–4 optimized sizes instead.
4. Wrong film thickness for the bag size
Heavy fills in thin film means stretching and seam failures. Light products in very thick film wastes money and runs poorly on high-speed lines.
5. Skipping real-world sample testing
A pillow bag size chart gives you a starting point. Only a real fill test on your actual machine confirms it. Always request samples before placing bulk orders.
FAQ
What are the most common pillow bag sizes for snacks?
For single-serve snacks (20–30 g): 100 × 150 mm. For grab-and-go (60–85 g): 110–125 × 180–200 mm. For sharing packs (140–170 g): 150 × 250 mm.
What’s the difference between a pillow bag and a stand-up pouch?
Pillow bags are flat with no bottom gusset. They’re more economical, run faster on VFFS lines, and use less film per pack. Stand-up pouches have a gusset that allows them to stand on shelf — better for premium retail display, but higher material cost.
How do I calculate pillow bag size from my product weight?
Measure your product’s actual volume by filling a measuring jug to the target fill weight. Use that volume (in cm³) to estimate bag width and length, then add 20–30 mm for seals and 15–40 mm for headspace depending on product type.
What film should I use for coffee pillow bags?
High-barrier laminate (PET/AL/PE or PET/MPET/PE) with a one-way degassing valve for freshly roasted coffee. For samples or short-shelf-life products, PET/PE is sufficient.
Can I get custom pillow bag dimensions?
Yes. At YLTPACK, we produce custom pillow bags in virtually any width and length — typically 60–420 mm wide and 80–600 mm long — with options for tear notches, zippers, euro holes, valves and full custom printing.
What is the MOQ for custom pillow bags?
Standard sizes typically start from 10,000–20,000 pcs. Custom printed bags usually start from 30,000–50,000 pcs per design. Contact us to discuss your volume.
Are food-grade and ISO 22000 pillow bags available?
Yes. YLTPACK produces food-grade pillow bags compliant with ISO 22000 and HACCP standards, with full COA and migration test documentation available on request.
Get the Right Pillow Bag Size for Your Product
Choosing the right pillow bag size comes down to three things: knowing your product’s actual volume (not just weight), understanding your filling method and machine limits, and testing before you commit.
At YLTPACK, we’ve been helping brands get packaging right since 2005. We work with snack producers, specialty coffee roasters, grain packers, pet treat brands and industrial customers across global markets — and we offer free pillow bag samples so you can test fit, seal quality and shelf look on your own line before placing an order.
If you know your product type and fill weight, we can recommend the right pillow bag dimensions, film structure and features within 24 hours.
Send your product details to: [email protected]
We’ll get back to you with a size recommendation and arrange a free sample — no commitment required.
