What Is a Zip of Dry Herb? Grams, Price, and What to Expect

A zip of dry herb is one ounce of product, 28 grams. The name comes from the old-school practice of fitting an ounce of dried flower into a standard Ziploc sandwich bag, and it stuck long after the industry moved to glass jars and mylar pouches. 

If you've heard the term and wanted a straight answer, that's it. The rest of this guide covers how much a zip costs, what it looks like, how it breaks down into smaller quantities, and whether buying one actually makes sense for you.  

How Many Grams Is a Zip of Dry Herb?

A zip is exactly 28 grams, which is one ounce. Technically, a US ounce is 28.35 grams, but the herb industry rounds down to 28, and that's the standard you'll see everywhere, street, dispensary, and legal retailer.

A zip is the base unit that all other common quantities are fractions of:

This breakdown matters because when you see prices posted at a dispensary, they're almost always listed per gram, per eighth, or per ounce. Knowing that a zip equals 28 grams helps you calculate whether the bulk price is actually a deal.

What Does a Zip of Dry Herb Look Like?

A zip fills roughly the volume of a standard sandwich bag, which is exactly where the name comes from. But here's what throws people off: 28 grams of one strain can look very different from 28 grams of another.

Indica strains like Bubba Kush tend to grow into dense, tight nugs that are heavy relative to their size. A zip of dense indica might not look like much, compact, small-looking buds that feel heavier than expected in your hand.

Sativa strains like Jack Herer grow airy and fluffy, filling up a bag until it looks like it's about to burst. Same 28 grams, just more volume. If you've ever felt like you got less than you paid for just because the bag didn't look full, that's density at work.

The fix for this is to always weigh it. Visual estimation for an ounce is unreliable, regardless of how experienced you are. A digital scale is the only way to confirm 28 grams is actually 28 grams.

How Much Does a Zip of Dry Herb Cost?

Nationally, a zip of dry herb typically runs somewhere between $150 and $350, depending on quality, strain, and where you're buying.

Here's how pricing generally breaks down by tier:

Several factors push that number up or down:

Location matters most. In states with mature, oversupplied legal markets, Oregon and Colorado being the main examples, prices have dropped significantly. In newer or more restricted markets like New York or Florida, prices tend to be higher because supply hasn't kept pace with demand. Street prices vary even more.

Dispensary vs. unlicensed market. Legal retailers usually have consistent quality and accurate weights, but their prices include taxes and overhead. Unlicensed sources are cheaper but carry obvious risks in terms of quality, weight, and legality.

Strain and quality tier. A top-shelf zip from a craft grower will cost more than a mid-grade zip of the same weight. Testing data, terpene profiles, and branding all factor into dispensary pricing.

Deals and daily specials. Most retailers run ounce specials, particularly on house strains or older inventory they want to move. If you're flexible on strain and primarily buying for value, checking a dispensary's daily deals or asking about their ounce specials can drop the price well below the standard shelf rate. Some retailers also offer loyalty points that compound with repeat purchases, rewarding larger purchases.

If you're trying to figure out whether a price is fair, divide the per-zip cost by 28 to get the cost per gram. Then compare that against what you'd pay for buying smaller quantities. A zip that comes out to $7 per gram can be a good deal if smaller quantities at the same shop cost more. For example, if an eighth costs $40 total, that equals about $11.43 per gram, so the zip offers better value. 

Half Zip, Quarter Zip: How the Quantities Break Down

Not everyone wants or needs a full ounce at once. Here's how the sub-zip quantities work:

Half-zip (14 gram/half ounce): The most popular step-down from a full zip. It still gets you a bulk discount at most retailers, and 14 grams is manageable if you smoke regularly but not daily. For a casual user, a half zip can last a month or more.

Quarter zip (7 grams/quarter ounce): Also called a quad or quarter. A solid middle ground enough to have variety and not run out after a weekend, but not so much that freshness becomes an issue. Good starting point if you've never bought more than an eighth before.

A good rule of thumb: if you smoke every day, a full zip makes sense. If you smoke a few times a week, a half zip or quarter is probably a better fit unless you have good storage sorted out.

Where Did the Term "Zip" Come From?

The term comes from the Ziploc sandwich bag. Before legal retailers started packaging dry herbs in glass jars and sealed mylar pouches, the standard container for an ounce on the street was a regular kitchen sandwich bag, the kind with a zip closure. One ounce of dried flower fit one bag. The bag zipped shut. The name stuck.

From there, "zip" moved out of street culture and into hip-hop. Artists like Wiz Khalifa and Snoop Dogg used the term in their lyrics, and it went from underground code to standard dry herb vocabulary. These days, you'll hear it at legal retailers just as often as anywhere else; it's fully mainstream.

Is Buying a Zip Worth It?

In most cases, yes, if you'll actually use it before it goes stale.

Buying a full ounce almost always lowers your cost per gram compared to buying eighths or grams individually. The savings can be anywhere from 20% to 50%, depending on where you shop. If you're a regular smoker, that adds up fast over a few months.

The one thing to factor in: dry herb stays fresh for roughly six months when stored properly, but it does degrade if left out or stored badly. Terpenes, the compounds that give bud its smell and flavor, start evaporating the moment flower is exposed to air, heat, or light. A zip you leave sitting in a plastic bag on a shelf will smoke noticeably worse at 25 grams than it did at 1 gram.

Getting the right gear sorted before you buy in bulk makes a real difference. A quality herb grinder helps you process the flower cleanly and collect kief in the bottom chamber over time, which is one of the hidden benefits of buying a full zip that people don't always think about. Pair that with an airtight stash container and a humidity pack at 58% to 62%, and your stash will stay in good shape from the first gram to the last.

How you consume also affects how long a zip lasts and how far it goes. Joints are the classic method, but they burn through product faster than a bowl or a vaporizer because of side-stream smoke between hits. If you're buying bulk and want to stretch it, a pipe or dry herb vaporizer is a more efficient option. 

The short version: if you smoke often enough that a zip will be gone in a month or two, buying one is almost always the smarter move financially. If you smoke once a week or less, a half zip is probably the better call.