| Unit | Equivalent |
|---|---|
| Grams | 3.5 g |
| Ounces | 1/8 oz (0.125 oz) |
| Standard joints (0.5 g) | 7 joints |
| Pinners (0.3 g) | 10–11 joints |
| Bowls (0.25 g) | ~14 bowls |
| Dry-herb vape sessions (0.2 g) | ~18 sessions |
| Typical NY price (pre-tax) | $35 – $60 |
| Effective price per gram | $10 – $17/g |
An eighth of weed is 3.5 grams
An eighth — written ⅛ or '1/8th' — is one-eighth of an ounce of cannabis flower. One ounce is 28 grams, so one eighth is exactly 3.5 grams (28 ÷ 8 = 3.5). The term comes from US imperial measurement: every traditional flower weight (eighth, quarter, half, ounce) is a fraction of that same 28-gram unit. Eighths are the single most popular flower weight sold at licensed New York dispensaries because they hit the sweet spot between sample size and bulk — enough for a week or two of casual use, small enough to stay fresh in the jar, and priced as one round number rather than a multi-gram math problem at checkout. If a budtender says 'an eighth,' 'an eighth-ounce,' '3.5,' or 'a slice,' they mean the same thing: 3.5 grams.
How many joints, bowls, or pre-rolls in an eighth?
A standard joint uses about 0.5 g of flower, so a 3.5 g eighth rolls roughly seven joints. Thinner pinners closer to 0.3 g push that to ten or eleven. A typical glass-bowl pull uses about 0.25 g, so an eighth yields ~14 bowls. If you prefer pre-rolls, an eighth is equivalent to seven half-gram pre-rolls or three-and-a-half full-gram pre-rolls. Dry-herb vape users get the most sessions per gram — most desktop or portable vapes use 0.1–0.2 g per session, stretching an eighth across 18+ sessions. None of these are exact: grind fineness, how tightly you pack, and how much you exhale unfinished all swing the count by a joint or two.
How long does an eighth of weed last?
For a once-a-day casual smoker, an eighth typically lasts seven to ten days. Daily multi-session smokers burn through one in two to four days. Microdosers using a dry-herb vape can stretch an eighth across two to three weeks. Storage matters: in an airtight glass jar, at room temperature, away from light, an eighth holds peak freshness for about three months. After six months, volatile terpenes start fading even with good storage and THC slowly converts to CBN (more sedating, less euphoric). If you smoke infrequently, an eighth is usually the right purchase size — buying a quarter or more risks losing flavor and potency before you finish it.
Eighth of weed price in New York (2026)
At licensed New York adult-use dispensaries, eighths typically run $35–$60 before tax depending on tier. Value or 'house' flower starts around $30–$40 an eighth. Mid-shelf branded eighths from established New York cultivators run $45–$55. Top-shelf single-source craft flower (small-batch, hand-trimmed, premium genetics) tops out near $60–$70. New York adds a 13% adult-use cannabis excise tax plus standard state and local sales tax on top of the listed price. Per gram, eighths almost always beat single grams: a $50 eighth works out to ~$14.30/g, while standalone grams typically retail for $18–$22. That bulk-pricing curve continues all the way up to ounces — the bigger the unit, the lower the per-gram cost.
Eighth vs quarter vs half vs ounce
Full conversion chart in grams: 1 eighth = 3.5 g, 1 quarter = 7 g, 1 half-ounce = 14 g, 1 ounce = 28 g. A quarter is exactly two eighths, a half is four eighths, and a full ounce is eight eighths. New York's adult-use possession limit is 3 ounces of flower in public — so the most you can legally carry at once is roughly 24 eighths. If you're comparing prices across weights, divide total dollars by total grams to get the per-gram cost; bigger weights always win on per-gram price, but only if you'll actually smoke through them before the flower stales.
How to buy an eighth in Queens same-day
Good Grades is a licensed Queens dispensary delivering same-day across Queens, Nassau County, and surrounding NYC neighborhoods. Browse eighths on the live menu, filter by indica / sativa / hybrid, and check terpene profile and lab-tested THC content before adding to cart. Every eighth comes lab-tested through New York's Office of Cannabis Management compliance chain. You'll need to be 21+ with a valid government ID at delivery. Most orders ship within hours during open delivery windows.