Cannabis has its own measurement language, it can trip people up. An “eighth” of what, exactly? How much is a quarter? What does an ounce look like? If you’ve ever stood at a dispensary counter in Los Angeles feeling slightly lost, you’re not alone. This page is the only weed measurements chart reference you’ll ever need. We cover every standard weight, what each one looks like, how many sessions you’ll get out of it, current California dispensary pricing, exactly how the numbers line up with the state’s 28.5-gram daily purchase limit. Bookmark this page, never second-guess the counter again.
Weed Measurements Chart (Grams, Eighths, Quarters, Halves, Ounces)
The table below is your master reference. It lists every standard cannabis weight, its fraction of an ounce, exact gram count, current California dispensary price range in one place.
| Common Name | Fraction of Oz | Grams | Approx. Price (CA Dispensary) |
| Gram | N/A | 1g | $8–$15 |
| Eighth | 1/8 oz | 3.5g | $25–$45 |
| Quarter | 1/4 oz | 7g | $45–$80 |
| Half Ounce | 1/2 oz | 14g | $80–$140 |
| Ounce | 1 oz | 28g | $150–$250 |
| Pound | 16 oz | 448g | Wholesale/commercial only |
Note: One ounce is technically 28.3495 grams. Cannabis retail universally rounds to 28 grams. That 0.35g difference is standard industry practice, not a ripoff. Knowing this helps explain why a retail ounce is listed as 28 grams.
That’s the complete weed weight chart in one table. The sections below break down what each weight means .
How Many Grams Are in an Eighth?
An eighth of weed is exactly 3.5 grams. It’s one-eighth of a 28-gram ounce (28 ÷ 8 = 3.5). Simple math,. “how many grams in an eighth” is still one of the most Googled cannabis questions in the country. The eighth is the most commonly purchased quantity at California dispensaries for a good reason: it’s enough flower for a week of casual use, fits most budgets comfortably, typically hits the sweet spot on price-per-gram. It costs less per gram than buying individual grams without the upfront cost of a quarter / more.
| Measurement | Exact Grams |
| Eighth | 3.5g |
| Quarter | 7g |
| Half | 14g |
| Ounce | 28g |
What Each Weight Looks Like
No scale? You can still make a rough estimate. Use these visual references before you pick it up:
- 1 gram: About the size of a large grape. Fills a small joint / 1–2 bowls. Perfect for sampling a new strain without committing.
- 3.5g (eighth): Roughly the size of a large fig / two fat nugs. Fits comfortably in a small glass jar. This is a week’s supply for a casual user.
- 7g (quarter): About the size of a lemon. Enough to loosely fill a sandwich bag. If you smoke daily, this is a solid 2–3 week supply.
- 14g (half oz): Size of a small apple. You’ll feel the weight in your hand. A month’s supply for many regular users.
- 28g (ounce): Fills a quart-sized mason jar about halfway. This is a serious quantity, ideal for regular users who want to stock up, save on per-gram cost.
Important: Density varies a lot between strains. Compact, dense indica nugs look significantly smaller than fluffy, airy sativa buds at the exact same weight. A gram of dense OG Kush, a gram of light Trainwreck can look completely different in the bag. A scale always wins over eyeballing. Licensed California dispensaries are required by law to use calibrated scales. You’re covered.
How Many Pre-Rolls / Bowls You Get Per Weight
The practical question is how long each weight will last. The table below gives clean estimates based on standard session sizes: a 0.5g–1g pre-roll, a 0.35–0.5g bowl.
| Weight | 0.5g Pre-Rolls | 1g Pre-Rolls | 0.35g Bowls | 0.5g Bowls |
| 1g | 2 | 1 | ~3 | 2 |
| 3.5g | 7 | 3–4 | ~10 | 7 |
| 7g | 14 | 7 | ~20 | 14 |
| 14g | 28 | 14 | ~40 | 28 |
| 28g | 56 | 28 | ~80 | 56 |
Real-world note: These are clean estimates. Actual yield varies based on grind coarseness, how tight you pack your bowl / roll, your personal smoking style. A finely ground, tightly packed bowl burns longer; a loosely packed one goes faster.
How Weight Relates to California’s 28.5 Gram Daily Purchase Limit
California law allows adults 21, older to purchase up to 28.5 grams of cannabis flower per day from a licensed retailer, roughly one ounce. This limit applies per transaction at each retailer. Visiting multiple licensed dispensaries in the same day is not prohibited by state law. Retailers track their own transaction limits.
One full ounce purchase (28g) comes in just under the 28.5g cap. The most common sizes use the following percentages:
- 1 eighth (3.5g) = 12.3% of the daily limit
- 1 quarter (7g) = 24.6% of the daily limit
- 1 half oz (14g) = 49.1% of the daily limit
- 1 oz (28g) = 98.2% of the daily limit, just under the cap
Possession note: The 28.5g limit is a purchase limit per transaction at a single retailer. California adults can legally possess more than 28.5g at home if it was purchased legally across multiple transactions. Public possession remains capped at 28.5g. For a full breakdown, check out our guide to California’s cannabis daily purchase limits.
Concentrate Weights: Separate 8 Gram Cap
Concentrates such as wax, shatter, live resin, distillate, rosin have a completely separate daily purchase limit in California: 8 grams. They are not counted against the 28.5g flower limit. You can legally buy the maximum on the same visit.
Eight grams of concentrate is a substantial quantity. A typical dab runs 0.1–0.3g,. 8 grams represents dozens of sessions for most users. Most single concentrate purchases at California dispensaries are in the 0.5–2g range.
| Product Type | CA Daily Purchase Limit | Typical Single Purchase |
| Flower | 28.5g | 1–7g (gram to quarter) |
| Concentrates | 8g | 0.5–2g |
| Infused Pre-Rolls | Counted as flower | 0.5–1g each |
Outside this chart: Edibles, tinctures are regulated by milligrams of THC, not grams of flower. They operate under entirely different rules, and are outside the scope of this weight chart.
Common Weight, Pricing Mistakes
Most cannabis confusion comes from a handful of recurring errors. Watch for these:
- Confusing “an eighth” with 4 grams: It’s 3.5g, not 4. Always. The difference is 0.5g per purchase. That may look small individually. It becomes meaningful over time if you’re getting shortchanged at an unlicensed source.
- Judging quantity by eye: Density varies wildly by strain. A gram of dense indica, a gram of fluffy sativa look nothing alike in the bag. Licensed CA dispensaries are required by law to use calibrated scales. If you’re buying from a legal shop, the weight is accurate.
- Overpaying for small quantities: Price per gram drops significantly at higher weights. An ounce at a California dispensary often costs the same per gram as buying two / three eighths separately. If you consume regularly, buying up usually saves money.
- Forgetting the 28g vs 28.3g distinction: Dispensaries round down to 28g for an ounce. That 0.3495g difference is standard industry practice, not a shortchange.
- Assuming a gram is a gram everywhere: Licensed CA dispensaries are required to use calibrated, certified scales. Legacy / unlicensed sellers are not. If it’s not from a licensed retailer, the weight isn’t guaranteed.
- Mixing up concentrate, flower limits: Buying an ounce of flower, 8g of concentrate on the same dispensary visit is completely legal. They are separate caps that don’t affect each other.
Frequently Asked Questions
How many grams are in an eighth of weed?
An eighth of weed is 3.5 grams. It’s one-eighth of an ounce (28g ÷ 8 = 3.5g), the most popular purchase size at California dispensaries. It’s the go-to for casual buyers: it balances price, quantity.
How many grams are in an ounce?
One ounce equals 28 grams in cannabis retail. Technically an ounce is 28.3495g,. The industry universally rounds to 28g. California’s daily purchase limit for flower is 28.5 grams, essentially one ounce.
Is an eighth enough for one person?
For most casual users, yes. At 1–2 sessions per day using a bowl / small joint, 3.5 grams typically lasts 5–10 days. Daily heavy users may go through an eighth in 2–3 days. It depends entirely on frequency, how much you use per session.
How much weed can you legally buy in California in one day?
California adults 21+ can purchase up to 28.5 grams of cannabis flower per day from a single licensed retailer. Concentrates have a separate 8-gram limit. These limits apply per transaction at a single retailer. Visiting multiple licensed dispensaries in one day is not prohibited by state law.
Do concentrates count toward the same weight limit as flower?
No. Concentrates, flower have completely separate purchase limits in California: 28.5g for flower, 8g for concentrates. You can legally purchase the maximum of one visit. They are tracked independently.
The Bottom Line
You now have everything in one place: the full weed measurements chart, a clear picture of what each weight looks like, how many sessions you can expect, exactly how California’s purchase limits apply to your next dispensary run. A single gram works for trying something new. An ounce suits people who want to stock up. Ready to shop? Browse our flower menu for current strain selections, / check out same-day delivery in Los Angeles. We bring the dispensary to your door.
