How Many Grams Are in 1/8th of Marijuana?

Typically when purchasing marijuana you have the option of buying a gram, a dub (two grams), an eighth, a quarter, a half ounce and a full ounce. In this article we’ll take a look at how many grams are in 1/8th of an ounce of marijuana, which may be the most popular purchase size.

This, of course, may seem like a simple and easy question for those who have been consuming marijuana for any period of time, or for those who know someone who does. That said, for those new to marijuana, it may not be so simple.

When it comes to buying cannabis, 1/8th is 3.5 grams. However, what many people don’t realize is that 1/8 of marijuana is actually, when speaking in specifics, 3.54 grams. For obvious reasons (simplicity, for one), dealers and licensed marijuana outlets weigh out 3.5 grams.

There is also a discrepancy in every other quantity of marijuana sold. For example:

  • 1/4th an ounce is 7.08 grams
  • 1/2th an ounce is 14.17 grams
  • 1 ounce is 28.34 grams

Below is a direct comparison of these sizes, courtesy of Leafly:


Given marijuana varies in density, the images above are approximations.

For comparison sake, below is one gram of marijuana next to a normal U.S. quarter:


Although most marijuana outlets only sell up to an ounce at a time (the legal limit in most states), there are higher quanities sometimes available. These include:

Quarter pound:

A quarter pound of marijuana consists of:

  • 4 ounces
  • 32 eighths
  • 112 grams


Half pound:

A half pound of marijuana consists of:

  • 8 ounces
  • 64 eighths
  • 224 grams

Full pound:

A full pound of marijuana consists of:

  • 16 ounces
  • 128 eighths
  • 448 grams

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