Trash bags are essential daily necessities. Trash cans that match them come in different shapes and sizes. The most common ones are round, square, semi-circular/D-shaped, corner (triangular/pentagonal), car trash bags/cans, and desktop mini trash cans. But with all these different garbage bag dimensions, how do you choose the right one?
This article details the bin liner size guide and how to measure a trash can，How to convert Gallon to Liters to help you choose the right trash bag. We hope this helps.
Can Liner Size Chart
Below is a comprehensive garbage bag size chart to match common trash can capacities with the right bag sizes:
| Capacity (Gallon / Liters) | Typical Dimensions (W x L, inches) | Common Uses |
|---|---|---|
| 4 Gallons / 15 Liters | Approx. 17" x 18" | Bathroom, bedroom, office desk bins |
| 8 Gallons / 30 Liters | Approx. 22" x 24" | Office use, larger bathrooms |
| 13 Gallons / 49 Liters | Approx. 24" x 28" | Standard kitchen trash cans (most common size) |
| 20 Gallons / 75 Liters | Approx. 28" x 34" | Large kitchens, commercial settings |
| 30 Gallons / 113 Liters | Approx. 30" x 36" | Outdoor, yard waste, garage |
| 45 Gallons / 170 Liters | Approx. 40" x 46" | Heavy-duty cleaning, industrial use |
| 55–60 Gallons / 208–227 L | Approx. 38" x 58" | Contractor bags, large-scale industrial waste |
Key Notes:
- Kitchen trash cans: Most use 13-gallon trash bags, ideal for 10-15 gallon cans.
- Rectangular or slim cans: Check width and depth, as gallon capacity alone may not ensure a perfect fit.
- Heavy-duty needs: For outdoor or commercial use, opt for 33-55 gallon bags with thicker material.
Kitchen Garbage Bag Size
| Bag Size | Fits Bin Size | Dimensions (Approx.) | Use Case |
|---|---|---|---|
| 4–6 gallon | 5–10 L bins | 17” x 18” – 19” x 24” | Small countertop or bathroom trash cans |
| 8–10 gallon | 10–15 L bins | 20” x 22” – 24” x 24” | Medium kitchen bins or under-sink use |
| 13 gallon | 45–50 L bins | 24” x 30” – 27” x 33” | Most common U.S. kitchen size |
| 16 gallon | 55–60 L bins | 28” x 32” | Slightly larger bins for busy kitchens |
| 20 gallon | 70–75 L bins | 30” x 36” | Large kitchen bins or utility bins |
Consequences of Using the Wrong Trash Bag Size
Too small: The bag may not fit over the rim of the can, causing spills.
Too big: Excess material will sag, wasting space and looking messy.
The right size: The right size bag is safe, maximizes capacity, and makes cleanup easier.
How to Measure Trash Can Size
For Round Cans:
To calculate width: Measure the diameter of the trash can, then multiply the diameter by 3.14 (π), and divide by 2. This is the width of the trash bag you need.
Bag Width = (Diameter x 3.14) / 2
To calculate length: Measure the height of the trash can, then add approximately 4-5 inches for the overhang for securing and tying.
Bag Length = Height + 4 inches
For Square/Rectangular Bins:
To calculate width: Measure the lengths of all four sides of the trash can, add them together to find the circumference, then divide the circumference by 2.
Bag Width = (Length + Width + Length + Width) / 2
To calculate length: Measure the height of the trash can, then add approximately 4-5 inches for the overhang.
Bag Length = Height + 4 inches
Garbage Bag Size Calculator
Measuring the Dimensions of Specially Shaped Trash Cans
Trash cans on the market aren't limited to circular and angular shapes; there are also some irregular shapes. How do you calculate their dimensions?
Semi-circular (D-shaped) trash cans:
This is the most challenging dimension to measure in the kitchen.
Measuring method: Measure the length of the "flat side" and the length of the "curved side" separately, add the two together, and divide by 2 to get the required bag width.
Corner (triangular) trash cans:
Measuring method: Measure the total length of all sides at the opening (usually two straight sides and one curved side), which is the circumference. Then divide by 2 to get the width.
Car and tabletop mini trash cans:
For these small, irregularly shaped containers, measure the circumference at the widest point directly, divide by 2 to get the width, and ensure the bag is deep enough.
How to Convert the Volume and Capacity of Garbage Bags
- 1 U.S. Gallon = 3.78541 Liters
- 1 Liter = 0.26417 U.S. Gallons
Many people may not be good at math, including me. I hope this calculator can help you convert gallons to liters and help you find the right garbage bag sizes.
Gallon & Liter Converter
What Should I Do if Trash Bag Slips While Using It?
Overhang: Leave at least 4 inches (about 10 cm) of overhang. This makes it easier to tie a knot and uses the bag's own weight and edge tension to "grip" the trash can, preventing it from slipping.
Drawstring vs. Flap Tie:
Drawstring: The drawstring securely holds the rim of the trash can tightly, effectively preventing it from slipping. Highly recommended for kitchens.
Flap Tie: More economical and suitable for lightweight trash or infrequently used trash cans.
If the trash bag is large, securing it with a large rubber band or two binder clips around the rim will also achieve the desired effect.
Material, Thickness, and Environmentally Friendly Choices
Mils and Microns
- Mil: This measure measures the thickness of low-density polyethylene (LLDPE) garbage bags. LLDPE is more flexible and tear-resistant.
- 0.9 mil: Sufficient for everyday kitchen waste.
- 1.5 mil or higher: Suitable for heavy-duty applications such as yard waste.
- Micron: This measure measures the thickness of high-density polyethylene (HDPE) garbage bags. HDPE is thinner and more brittle, but offers good weight-bearing properties and is suitable for waste without sharp edges, such as paper.
"Biodegradable" does not equal "truly eco-friendly."
"Biodegradable": A very vague marketing concept. Most plastics "degrade" into microplastics over hundreds of years, which is not beneficial to the environment.
"Compostable": The bag can be broken down into organic matter in industrial composting conditions (not backyard composting). The decomposed matter is beneficial to the soil and contributes to the sustainability of the planet. This requires certification such as BPI, which is a relatively high standard.
Post-Consumer Recycled (PCR): Using recycled plastic to make garbage bags is one of the most practical environmentally friendly options available, reducing the production of new plastic.
Choosing the Right Trash Bag for Your Kitchen
Kitchens generate the most waste in most households, making 13-gallon trash bags the most popular choice. These bags fit standard 10-15 gallon kitchen cans, handling food scraps, packaging, and more. For larger households, a 20-30 gallon bag may be better for a bigger can.
Pro Tip:
Look for drawstring trash bags for easy tying and removal, especially in busy kitchens.
Eco-Friendly Trash Bag Options
At OrizonBio, we’re committed to sustainable waste solutions. Our biodegradable garbage bags come in all sizes listed in the garbage bag size chart, from 4-gallon bathroom bags to 55-gallon outdoor bags. Made from plant-based materials, they decompose naturally, reducing plastic waste.
Benefits of Biodegradable Bags:
- Eco-conscious alternative to traditional plastic.
- Durable for everyday trash needs.
- Available in all standard sizes.
Shop our biodegradable trash bags to pair sustainability with the perfect fit.
Conclusion
Choosing the right trash bag is more important than you think. By taking precise measurements, understanding the needs of specific shapes, anti-slip techniques, and having a deep understanding of materials and environmental considerations, you can easily make the best choice. We hope this comprehensive bin liner size guide will be your ultimate resource for all your trash bag questions.
FAQ
What size trash bag fits a 13-gallon kitchen can?
A 13-gallon trash bag is ideal for a 13-gallon can, commonly used in kitchens.
How big is a 16 gallon garbage bag?
A 16-gallon (approximately 60-liter) garbage bag is a common "tall kitchen" size, slightly larger than the standard 13-gallon bag.
- Typical Dimensions: Around 24 inches wide by 31-33 inches tall (approx. 61cm x 81cm).
- Best For: It's perfect for taller kitchen trash cans or for households that produce a bit more waste. It provides extra height to prevent the bag from slipping inside the can.
How do I know what size bin bag to get?
The easiest way to find the capacity is by looking at the gallon or liter mark on the trash can (usually located on the bottom).
Bag Width: Measure the circumference of the trash can's rim and divide that number by 2. This is the bag width you need.
Bag Height: Measure the height of the trash can and add approximately 4-5 inches (10 cm). This extra length will give you enough overhang to fold over the rim and tie the bag later.
