A zip is a slang term for one ounce of cannabis, equaling 28 grams. The zip measurement comes from the standard sandwich bag capacity of one ounce of dried flower.
A “zip” simply refers to buying a larger quantity at once. Buying a zip allows you to stock up, and it often reduces the cost per gram compared to smaller purchases. Veterans of the culture remember when "zip" was a code word to keep the sesh discreet. The term evolved from underground slang to a standard order at legal retailers.
How Much Weed is in a Zip?
A zip contains one ounce of cannabis, or 28 grams. The zip unit is the standard measurement for bulk cannabis purchases.
- Standard US Ounce: Weighs 28.35 grams.
- Industry Standard: Rounds down to 28 grams.
A zip is a common way to measure larger cannabis quantities; everything else you buy, like an eighth (3.5g) or a quarter (7g), are fractions of this number. A full zip of cannabis fills the surface area of a standard rolling tray depending on the flower density.
Indica vs. Sativa Density Differences
Cannabis weight does not equal volume. Different strains possess distinct density characteristics, meaning 28 grams of one bud type looks different from 28 grams of another. An Indica strain like Bubba Kush usually grows into dense, tight nuggets that are heavy but take up less space.
A Sativa like Jack Herer tends to be airy and fluffy, filling up a bag until it appears ready to burst. Both weigh the same, even though the Sativa stash looks larger. Visual estimation is inaccurate for ounce measurements. A digital scale confirms the specific weight of 28 grams regardless of strain density.
Where Did the Term "Zip" Come From?
The term "zip" originates from the standard capacity of the sandwich bag. The name comes from standard kitchen sandwich bags. Before legal retailers started selling buds in fancy glass jars or child-proof mylar pouches, the industry standard for street deals was the kitchen sandwich bag. One ounce of dried flowers is commonly associated with the size of a standard sandwich bag. Requesting a "zip" refers to a bag that zips shut.
The zip slang term didn't just stay in the streets, though; it graduated to pop culture icon status thanks to hip-hop. Legends like Wiz Khalifa and Snoop Dogg started using the word in their lyrics, transforming a simple unit of measurement into a status symbol. Buying a gram or an eighth was for beginners, but pulling up with a full zip showed you had the cash and the status to really handle your stash. It became a widely used term in cannabis culture and everyday conversation.
Why Buying a Zip Saves Money
Buying in bulk reduces the cost per gram. The main advantage of buying a zip is the bulk discount. Prices can vary depending on location, quality, and market conditions. A bulk purchase yields savings of 30% to 50%.
Buying in bulk can help reduce the cost per gram. Geography plays a major role in pricing. In a mature market with tons of supply, like Oregon, prices tend to be lower in markets with more supply compared to newer, high-demand areas like New York.
Zip Storage and Protection

Storing a full ounce requires specific humidity control to maintain freshness. Improper storage results in terpene loss and degradation. A zip is an investment that requires preservation to ensure the last gram smokes just as good as the first.
Oxidation and Dryness
Terpene loss occurs immediately when cannabis is exposed to air and heat. Terpenes are the natural compounds providing smell and flavor. When they evaporate from heat or air, your damp, sticky flower turns into dry dust that burns hot and harshly. Oxidation occurs when oxygen interacts with cannabis. That uplifting Friday-night experience may become more relaxed if you leave your supply out.
Humidity Control and Airtight Storage
Maintaining a stable humidity level helps preserve freshness. Trichomes can become brittle and break off if humidity drops below 58%. If it goes higher, you risk mold. The most effective preservation method is the Boveda 2-way humidity control packet. These packets use 2-way humidity control to add or remove moisture automatically, keeping your stash perfectly sticky.
Many users recommend pairing that with an airtight container. These containers are stainless steel, airtight, and light-proof, which helps block UV rays that speed up degradation. This combo is a reliable way to stop that dreaded "hay smell" and keep your bud tasting exactly how it should.
Essential Gear to Handle Bulk Bud
Processing bulk flowers requires the right tools to avoid sticky hands:
- A metal grinder helps break down the flower and collect kief over time.
- A metal grinder helps break down the flower and collect kief over time.
- A storage container helps keep your stash fresh for longer.
As you grind through 28 grams, the screen sifts the trichomes into the bottom chamber.
Kief can build up over time as you grind your flower.
Your choice of gear also dictates how long that zip lasts. Smoking joints is a classic method, but they waste a lot of product through side-stream smoke that drifts away between hits.
Vaporization can feel different compared to traditional smoking. Because vaporizers heat the flower without burning it, they can feel different compared to traditional smoking from the same amount of material. A desktop vaporizer can help you use your stash more gradually compared to smoking, making it a useful option for those buying in bulk.
