Measurements · 3 min read
3.5 grams explained: 3.5g to oz, and why it is called an eighth
3.5 grams is 0.125 ounces — one eighth of an ounce, which is where the name comes from. Here is the maths, and a converter for any other weight.
3.5 grams is 0.125 ounces — one eighth of an ounce. That is the whole reason it is called “an eighth”: 28 grams to the ounce, divided by eight, is 3.5.
The maths
- 1 ounce = 28 g (rounded by the trade; strictly 28.35 g)
- 28 ÷ 8 = 3.5 g, one eighth
- 3.5 g ÷ 28 = 0.125 oz
- 8 eighths make an ounce; 2 make a quarter; 4 make a half
Why not 3.54?
If you use the exact ounce, 28.35 ÷ 8 is 3.54 grams. The trade settled on round numbers long ago, so the eighth is 3.5 everywhere you shop. Licensed New York products state the net weight in grams on the label.
Is 3.5 grams a lot?
It is the most common single size people buy, and it is a small amount by legal standards — New York allows adults 21 and over to possess up to three ounces of flower. How long it lasts is personal, so start small if you are new; the first-timer guide is a good place to begin.
Try weighing out an eighth yourself in the scale game on the measurements guide.
Convert it
Quick converter
3.5 g is an eighth of an ounce.
That is 1 eighth, half a quarter, or 0.125 oz.
Each jar is one eighth (3.5 g). The trade rounds an ounce to 28 g; strictly it is 28.35 g. New York's adult possession limit is three ounces of flower.
Test yourself
3.5 grams: 3 quick questions
Question 1 of 3
What is 3.5 grams in ounces?
3.5 / 28 = 0.125, which is one eighth of an ounce.
Using the exact ounce of 28.35 g, an eighth would be...
28.35 / 8 = 3.54. The trade settled on 3.5 long ago.
How many 3.5-gram eighths make an ounce?
Eight eighths of 3.5 g make 28 g.
Common questions
- What is 3.5 grams in oz?
- 3.5 grams is 0.125 ounces, one eighth of an ounce.
- Is 3.5 grams an eighth?
- Yes. An eighth is 3.5 grams: 28 grams to the ounce divided by eight.
- Why is 3.5 grams called an eighth?
- Because it is one eighth of an ounce. Flower has always been sold in fractions of an ounce, and with the ounce rounded to 28 grams an eighth comes out at exactly 3.5.
- How many 3.5 grams are in an ounce?
- Eight. Eight eighths of 3.5 grams make 28 grams, one ounce.
More on weights and sizes
- Weed measurements: grams, eighths, quarters and ounces What an eighth actually weighs, how the sizes convert and what each size looks like — plus a scale you can play with.
- Eighth vs quarter: what comes after an eighth? A quarter comes after an eighth: 7 grams against 3.5. Here is how the two compare, side by side, with a converter to check any weight.
- Is 14g a half ounce? A half ounce in grams Yes — a half ounce is 14 grams. Here is how it breaks down into eighths and quarters, and why you will sometimes see 14.17.
- What does an ounce of weed look like — and how much is it? An ounce is 28 grams — eight eighths. What it looks like depends on the strain, so here is how to picture it, and what it is on our shelf today.
- How to read a weed scale What the numbers and buttons on a small digital scale mean — grams, tare, the unit button and how precise it needs to be.
Keep reading
- THC vs CBD — what the difference actually is Two cannabinoids from the same plant that do very different things. What each one is, why products list a ratio and how to read the label.
- New to cannabis? Start here A calm, jargon-free walkthrough for your very first visit — what to bring, how it’s sold and how to pick something you’ll actually enjoy.
- Indica vs. Sativa vs. Hybrid — and why we sort by feel instead The indica/sativa split is a useful starting point, but it isn’t the whole story. Here’s what the labels mean and why we organize the menu around the effect you want.
- Edibles dosing: start low, go slow Edibles are easy to love and easy to overdo. Here’s how dosing works, why they take so long to kick in and a simple plan for a comfortable experience.
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