How Many Grams Are in an Ounce? Cannabis Flower Measurements Explained

Let’s start with the basics because this is where most confusion lives. One ounce of cannabis flower equals 28 grams. That’s the anchor number. Everything on a cannabis dispensary menu flows from that single fact.

Here’s how the standard breakdown works:

• 1 gram — the smallest amount you’ll typically buy. Good for trying a new strain without commitment. Enough for one to two sessions depending on how you consume.
• An eighth (⅛ oz) — 3.5 grams. This is the most popular purchase size at any cannabis dispensary in DC, and it’s what most patients grab on a regular visit.
• A quarter (¼ oz) — 7 grams. Two weeks’ worth for a moderate daily user.
• A half ounce (½ oz) — 14 grams. You’re stocking up at this point.
• One ounce (1 oz) — 28 grams. The maximum a medical patient can possess in DC at any given time under ABCA regulations.

Honestly, the reason these numbers trip people up is the terminology. Nobody says “3.5 grams” in casual conversation — they say “an eighth.” And once you know that an eighth is just one-eighth of 28, the rest of the math clicks into place. A quarter is two eighths. A half is four eighths. Simple.

One thing I’ll add: if a dispensary menu explained its measurements clearly, fewer patients would feel lost on their first visit. That’s why we list gram weights next to every item on our cannabis menu — no guessing required.

How Much Does Cannabis Cost in DC? Real Prices at a Licensed Dispensary

Alright, let’s talk money. Cannabis prices in DC vary depending on the strain, the grower, the terpene profile, and whether you’re buying cannabis flower, concentrates, or edibles. But I can give you honest ballpark numbers for what you’ll see at a licensed DC dispensary like ours on Connecticut Avenue.

• 1 gram of flower: $12–$18
• An eighth (3.5g): $40–$65
• A quarter (7g): $75–$120
• A half ounce (14g): $140–$210
• One ounce (28g): $250–$380

Those ranges depend heavily on tier. Top-shelf strains with tested terpene profiles — high limonene for mood, heavy myrcene for relaxation, solid caryophyllene for inflammation — they’ll sit at the upper end. House strains or value options run lower. Neither is “bad.” It’s about what you need.

Here’s the thing: price per gram drops significantly as you buy more. A single gram at $15 means you’re paying $420 per ounce if you bought one gram at a time. But an actual ounce runs $250–$380. That’s a massive difference. If you know a strain works for you, buying a quarter or more saves you real money. Look for dispensary deals too — we run specials regularly, and patients who check in with us tend to catch them first.

One myth I want to kill right now: “more expensive always means stronger.” Nope. I’ve seen $45 eighths with better effects than $65 ones because the terpene profile was dialed in perfectly. A strain loaded with linalool and pinene at 22% THC can outperform a bland 30% THC flower that’s been poorly cured. Learn how terpenes actually work and you’ll make smarter purchases every time.

How to Read a Cannabis Label at a DC Dispensary

Your cannabis label is trying to tell you a story. Most patients skip straight to the THC number and ignore everything else — and that’s a mistake I correct multiple times a day at our dispensary on Connecticut Avenue.

Here’s what to actually look at:

• Strain name — tells you the genetics, which hint at whether it’s an indica-leaning, sativa-leaning, or hybrid experience.
• THC percentage — matters, but it’s not everything. Think of it like alcohol proof — a 100-proof vodka and a 40-proof cocktail give you different experiences, and higher isn’t automatically better.
• CBD percentage — especially relevant for patients managing pain, anxiety, or inflammation. A balanced THC:CBD strain can be incredibly effective.
• Terpene profile — this is the real predictor of how a strain will feel. Myrcene-heavy strains tend to be sedating. Limonene lifts your mood. Caryophyllene targets inflammation. If your label lists terpenes (and it should), read them.
• Harvest and test date — fresher is better. Cannabis degrades over time, especially if it’s been sitting in packaging for months. Six months or less from harvest is ideal.
• Net weight — confirm it matches what you’re paying for. An eighth should weigh 3.5 grams, period.

The dispensary menu explained at most shops will list THC and maybe CBD. A good cannabis dispensary in DC — the best dispensary DC has, honestly — will also show you terpene data and let you smell the product before you buy. That’s standard practice here at MrGreen. We want you to understand what you’re putting in your body (no judgment, everyone asks).

First Dispensary Visit Tips: What to Expect and How to Save Money

If this is your first dispensary visit, a few things will make the experience smoother.

Bring your medical card and a valid government ID. DC’s medical program requires both. You’ll check in at the front, then get called back to the sales floor. It’s not intimidating — think of it like a slightly more regulated pharmacy with way better vibes.

Know your budget ahead of time. It’s easy to get excited by options. If you’re wondering how much does cannabis cost in DC for a first-timer, plan on spending $40–$65 for an eighth. That gives you enough to try a strain over several sessions without a big financial commitment. Ask your budtender what they’d recommend for your specific situation — sleep, pain, anxiety, creativity, whatever it is. That’s literally what we’re here for.

Don’t chase THC numbers. I said it before and I’ll say it again. I had a patient from Dupont Circle who was buying the highest-THC flower on the menu every visit and couldn’t figure out why she was anxious afterward. We switched her to a lower-THC, limonene-and-linalool-forward strain and she texted me “this is the first time cannabis has actually relaxed me.” Terpenes matter. A lot.

Ask about how to store cannabis properly. Flower degrades when exposed to light, heat, and air. Keep it in an airtight glass jar, somewhere cool and dark. A dresser drawer works great. Don’t leave it in a plastic bag on your nightstand — that’s how you end up with dry, flavorless cannabis in two weeks.

If you can’t make it to our Connecticut Avenue location, we also offer cannabis delivery DC-wide. Whether you’re in Adams Morgan, Shaw, or Navy Yard, we’ll bring the dispensary to your door.

Getting Your DC Medical Cannabis Card: It Takes About Two Minutes

Look, I know some people put this off because they assume it’s a hassle. It isn’t. DC’s self-certification process is genuinely the easiest medical cannabis enrollment in the country.

Here’s what you do:

1. Go to the DC Health medical cannabis program website.
2. If you’re 21 or older, you can self-certify — no doctor visit needed, no fee.
3. Fill out the online form (seriously, two minutes).
4. You’ll receive your registration, and then you can purchase from any licensed DC dispensary.

The privacy question comes up constantly, so let me be direct: the ABCA (DC cannabis regulator) does NOT share your patient data with employers, federal agencies, or anyone else. Your registration is protected. Zero career risk. If you work for the federal government, a contractor, or anyone else — your enrollment is confidential (yes, even your employer won’t know). I’ve had patients from every agency you can think of walk through our doors, and not a single one has had an issue.

For a more detailed walkthrough, check out our guide on how to get a DC med card.

Stop By MrGreen DC or Order Delivery Today

Now that you know exactly how much does cannabis cost in DC and what every measurement on the menu means, you’re ready to shop with confidence. Whether you’re picking up your first eighth or stocking up on a half ounce of your go-to strain, we’ve got you covered. Come see us at our dispensary on Connecticut Avenue NW — we’re right off the Red Line near Dupont Circle, easy to get to from Logan Circle, Adams Morgan, and everywhere in between. Or skip the trip and use our same-day weed delivery to get what you need brought straight to your door. We’re here seven days a week, and we don’t bite.