Cannabis flower is one of the last things you'll buy that's still priced by the eighth, the quarter, and the ounce — old imperial fractions that can be genuinely confusing the first time you see them on a menu. The single question that sends most people searching is simple: how many grams are in an eighth? The answer is 3.5 grams. This guide lays out the whole ladder of weights, what each amount is realistically good for, and how it lines up with what you'll see on the Float On menu and with Vermont's purchase rules.

How many grams are in an eighth?

An eighth is 3.5 grams — literally one-eighth of an ounce. It's the workhorse size of a cannabis menu: enough to get a real feel for a strain without committing to a large amount, and the quantity most flower listings default to. When someone says they "picked up an eighth," they mean 3.5 grams of flower. If you remember one number from this whole guide, that's the one.

What does each cannabis weight actually weigh?

Flower is sold along a fixed ladder of fractions of an ounce. Here's the full set, smallest to largest:

• 1 gram — a single gram, the smallest common unit. Sometimes sold on its own; also the building block everything else is measured in.
• Eighth = 3.5 grams — one-eighth of an ounce. The default flower size on most menus.
• Quarter = 7 grams — one-quarter of an ounce, or two eighths.
• Half = 14 grams — half an ounce, or two quarters.
• Ounce = 28 grams — a full ounce, or eight eighths. The largest single flower size you'll typically see listed.

Why is it called an "eighth"?

Because it's an eighth *of an ounce*. Cannabis in the U.S. has long been weighed in ounces and their fractions, so the common sizes are just the ounce sliced up: an eighth (1/8 oz), a quarter (1/4 oz), a half (1/2 oz), and the whole ounce. The names describe the fraction, not the gram count — which is why "an eighth" (3.5g) and "a quarter" (7g) sound unrelated to the metric weights printed next to them. Grams are the metric measure; eighths and quarters are the imperial fractions. Menus usually show both.

How much is a gram, really?

A gram is the smallest step and the easiest to picture: it's a modest pinch of dried flower, roughly the size of a large grape or a walnut in the jar depending on how dense and how ground it is. In practical terms a gram is enough to roll a joint or two, or to fill a few small bowls — a good amount to sample a strain you've never tried before you decide whether to buy more of it. Because it's a single serving-ish quantity, a gram is the lowest-commitment way to test-drive something new.

What is each amount realistically good for?

The right size depends on how often you shop and how much you go through. A rough, practical way to think about it:

• A gram: try-before-you-commit. Perfect for testing a new strain or format without buying more than you'll use.
• An eighth (3.5g): the everyday purchase. Enough flower to live with a strain for a while and decide if it's a repeat-buy — which is exactly why it's the most common size.
• A quarter (7g): for a strain you already know you like, or when you'd rather not make a trip every week.
• A half (14g) or ounce (28g): the stock-up sizes, for regular buyers who've settled on a favorite. Buying larger usually costs less per gram, though prices aren't something we quote here — check the live menu for what's current.

How do these weights fit Vermont's purchase limit?

Comfortably. As of July 1, 2026, Vermont lets an adult 21+ buy up to two ounces of flower — that's 56 grams, or sixteen eighths — in a single transaction, under Vermont's two-ounce rule. Every size on the ladder above, right up to a full ounce, sits well inside that ceiling, so weight limits almost never come up for a normal flower purchase. The limit mainly matters for large or mixed baskets, and non-flower products (vapes, edibles, concentrates, beverages) count toward the same cap by a flower-equivalent conversion the store's system tracks for you.

How do the weights show up on the Float On menu?

Flower listings are organized by these exact weights — you'll pick a strain and then choose a gram, eighth, quarter, half, or ounce, with the common sizes shown for each product. A few things worth knowing as you browse:

• The price is all-in. At Float On the number you see is the final price — Vermont's 14% excise and 6% sales tax are already built in, so an eighth listed at a given price is that price at the counter.
• Pre-rolls are sold by the gram too. A single pre-roll is usually a half-gram or a gram of flower already rolled; a multi-pack lists its total gram weight so you can compare it against loose flower.
• Not everything is weighed in eighths. Vapes, edibles, and beverages are sold by cartridge, package, or milligrams of THC rather than by the eighth — our guide to flower vs. vape vs. edible covers how those formats differ.

If it's your first time, our walkthrough of a first Burlington dispensary visit covers the ID check and the rest of the flow, or you can just browse the live menu before you stop by us in downtown Burlington.

A quick weight cheat-sheet

The whole thing in one line to screenshot: 1 gram → eighth (3.5g) → quarter (7g) → half (14g) → ounce (28g), with an ounce being eight eighths and Vermont's two-ounce limit equal to sixteen eighths (56g). Grams are metric; eighths, quarters, and halves are fractions of an ounce. Once that clicks, a cannabis menu reads like any other price list.