You’re standing in a dispensary holding a bag labeled 28g and a tin of gummies dosed at 5mg each, and suddenly the question hits you — how many grams in an ounce, and how does any of this translate to what I actually feel tonight?

Let’s get the easy part out of the way first: how many grams in an ounce? It’s 28.3495 grams — most people round to 28. Simple enough on paper, but when you’re a DC medical cannabis patient staring at edible labels that mix milligrams of THC with grams of product weight, that number suddenly matters a lot more than you’d think. The weight of an edible tells you how much food you’re eating; the milligram dosage tells you how much THC (or CBD) is inside. Confusing the two is one of the most common mistakes we see, and honestly, it’s the system’s fault — not yours.

At Green Legacy, our budtenders walk patients through this math every single day. We’re a licensed medical dispensary right here in DC, and we’ve learned that when someone truly grasps the relationship between product weight and cannabinoid content, their whole experience improves. If you’ve got more baseline questions — like purchase limits, what you can carry, or how to read a label — our FAQ page is genuinely worth a bookmark. No judgment, ever. We’d rather you ask twice than dose wrong once.

I’ll never forget a patient from Adams Morgan — let’s call her Dana — who came in frustrated because she’d eaten “half a gram” of a chocolate bar and felt almost nothing one night, then way too much the next. Turned out the two bars were from different brands with wildly different potencies per gram. Once we sat down and mapped out how many grams in an ounce, then broke that ounce into the actual serving sizes listed on her products, it clicked. She literally texted us a week later: “I finally feel like I’m driving the car instead of riding in the trunk.” That’s the goal.