What's a Zip? Grams, Cost, and Other Terms Explained

A zip is 1 ounce, or 28 grams. It's one of the most common weight terms you'll hear in dry herb culture, and knowing it cold makes every other conversion on this page click into place, along with the handful of other terms that tend to come up right alongside it.

Where the Term "Zip" Comes From

The name comes from the classic Ziploc bag, the go-to way an ounce has been packaged and carried for decades. Over time, "zip" became the shorthand people reached for instead of saying "ounce" every time, and it's stuck around in casual conversation even as legal purchasing has become more common in a lot of places.

It's not an official unit of measurement anywhere, just widely understood slang that shows up constantly once you know to listen for it. Like a lot of casual terminology, it survived because it's simply faster to say than the formal alternative, one syllable instead of two, and it carries the same meaning either way.

How Much Is a Zip

A zip runs on the higher end of typical weight amounts, since it's a full ounce rather than a smaller portion like an eighth or a quarter. Exact cost varies quite a bit depending on your region, current market conditions, and the quality of what you're buying, so there's no single number that holds true everywhere.

What stays consistent no matter where you are is the weight itself: 28 grams, every time. Because the cost side of the equation shifts so much by location and quality, the weight conversion is really the more useful thing to lock in, since that number never changes regardless of where or what you're buying.

Full Weight Conversion Table

Once you know a zip is 28 grams, the rest of the common weight terms fall into place around it.

Why These Terms Matter

Getting comfortable with weight terminology isn't just about sounding informed, it's genuinely useful for making sure you know exactly what you're buying or discussing. A miscommunication between an eighth and a quarter, for instance, is the difference between 3.5 grams and 7 grams, double the amount for a term that sounds similar in casual conversation.

Having these numbers memorized removes that ambiguity entirely, whether you're confirming an amount out loud or just following along with a conversation that assumes you already know the terms.

How Many Zips Make a Pound

Sixteen zips make a pound, since a pound is 16 ounces and a zip is exactly one ounce. This is a useful conversion to keep in your back pocket if you ever hear amounts discussed in pounds rather than ounces, since the two units are directly related through this simple 16-to-1 relationship.

Common Slang Terms Glossary

Beyond "zip" itself, a handful of related terms show up constantly once you're paying attention to how amounts get discussed casually. Each one scales directly off the same 28-gram ounce, just at a different fraction of it.

• Eighth: 3.5 grams, an eighth of an ounce, and one of the most commonly referenced smaller amounts.
• Quarter: 7 grams, or a quarter of an ounce, sitting right between an eighth and a half.
• Half: 14 grams, half of a full zip, a common middle-ground amount for regular use.
• Zip: 28 grams, a full ounce, the term this whole page is built around.
• Half pound (HP):  8 ounces, or half of a full pound, sometimes referenced in bulk conversations.
• QP (quarter pound): 4 ounces, a quarter of a pound, another bulk-adjacent term worth recognizing even if you'll rarely deal in this amount personally.
  
  

What Is a Zip

A zip refers specifically to a full ounce, 28 grams, packaged or measured out as a single unit. It's the term you'll hear most often once conversations move past small personal amounts like an eighth or a quarter into a larger, stock-up-style quantity.

Understanding it is really just understanding that one specific number, 28 grams, since everything else about the term flows from that single conversion. Whether you hear it as "a zip," "an ounce," or occasionally just "a Z," all three point back to the exact same 28-gram amount.

How Many Grams Are in a Zip

Exactly 28 grams. This is the one number worth memorizing if you take nothing else from this page, since it's the anchor point for the entire weight conversion system; eighths, quarters, halves, and zips all scale directly from this same 28-gram ounce.

Measuring a Zip Accurately at Home

Once you're working with amounts this size, eyeballing a weight isn't reliable, since even a small margin of error adds up fast at 28 grams. A digital mini scale reading to 0.01g gives you the precision to confirm a full zip, break it down into smaller portions like eighths and quarters, or just double-check a purchase against what you're told you're getting.

A scale with a 200g capacity comfortably covers a zip with plenty of headroom, and switching between gram and ounce readouts makes it easy to verify either unit depending on how the amount was described to you. Pairing a scale with a grinder makes portioning out a full zip into individual sessions faster too, since consistently ground material is easier to divide evenly by weight than material broken up by hand. 

Keeping a Full Zip Fresh

Once you're working with a larger amount like a full zip, proper storage matters more than it does with a smaller quantity you'll go through quickly. A sealed, smell-proof stash container protects a larger amount from light and air exposure, both of which affect quality over time if flower sits out or stays in a bag that doesn't seal well.

Airplane-grade construction and a locking lid make a real difference here compared to a basic bag, especially for anyone holding onto a full ounce for more than a few sessions. Since a zip typically lasts considerably longer than smaller amounts, getting the storage right at the start pays off across the entire time you're working through it. Browsing the full storage collection is worth doing if you want to compare a few different container styles before settling on one. 

Rounding Out Your Smoking Vocabulary

"Zip" is just one term in a much wider vocabulary that smokers pick up over time. If terms like "cherried," "beat," or "dugout" leave you lost mid-conversation, DHC's full smoker slang guide covers the rest of the everyday vocabulary that comes up around gear, sessions, and technique, well beyond just weight terms. Between the two guides, weight terminology and general smoker slang, most of what comes up in casual conversation is covered.