You’re standing at the counter, staring at the menu, doing math in your head — and suddenly the question hits you like a forgotten edible: how many grams in an ounce, exactly, and am I getting the best deal?

Let’s settle this once and for all: how many grams in an ounce? It’s 28.3495 grams, but in cannabis, we round down to a clean 28 grams. That’s the universal standard across every licensed dispensary in DC, and knowing that number is genuinely the foundation of buying smarter. Once you’ve got weed measurements locked in your head — grams, eighths, quarters, halves, full ounces — you stop second-guessing yourself and start comparing prices like a pro. It’s the kind of basic knowledge that separates the patient who’s always hunting deals from the one who just grabs whatever’s closest to the register.

At Green Legacy’s DC dispensary, we watch patients level up their buying habits in real time. Someone walks in buying a gram at a time, and within a couple months they’re asking about ounce pricing because they did the per-gram math on their phone. We love seeing that shift. Our staff is always happy to walk you through the weed measurements guide — no judgment, no rush — because an informed patient is a happier patient. And honestly, the savings between buying individual grams versus a full ounce can be dramatic enough to cover your Metro card for the month.

I’ll never forget a regular from Adams Morgan (we’ll call her Diane) who came in one afternoon genuinely upset. She’d been buying eighths every week for over a year before she realized she was spending almost 40% more per gram than she needed to. We sat down, showed her the bulk pricing, and she literally said, ‘Why didn’t anyone tell me this sooner?’ Now Diane buys a half ounce every two weeks, stashes it in mason jars, and texts us strain recommendations like she’s on the payroll. That moment is exactly why we wrote this post.