How Many Grams in 1/8 of Marijuana?


An eighth of cannabis.

When purchasing cannabis, the 1/8 (one eighth) quantity is a very popular one. But how many grams are actually in 1/8 of an ounce of marijuana?

For all intents and purposes, an eighth of cannabis is 3.5 grams; this is the amount you’ll be purchasing when buy 1/8 from a dealer or cannabis outlet. However, technically speaking 1/8 of marijuana is 3.54 grams.

The same slight discrepancy is true of all other typical forms of marijuana quantities that are sold:

  • 1/8 an ounce = 3.54 grams
  • 1/4 an ounce = 7.08 grams
  • 1/2 an ounce = 14.17 grams
  • 1 ounce = 28.34 grams

Below is a visual comparison of these quantities, courtesy of Leafly:


When purchasing from a dealer or cannabis retail outlet, all of these will be quantities that are used; in addition to the standard one gram. Some will sell smaller amounts, such as half grams; others may sell larger amounts, such as quarter or half pounds (four and eight ounces). In rare instances a full pound might be offered; this equals a full 16 ounces. However, in most states with legal cannabis, outlets aren’t legally allowed to sale over an ounce (though in Maine the limit is 2.5 ounces).

About Anthony Martinelli

Anthony, co-founder and Editor-in-Chief of TheJointBlog, has worked closely with numerous elected officials who support cannabis law reform, including as the former Campaign Manager for Washington State Representative Dave Upthegrove. He has also been published by multiple media outlets, including the Seattle Times. He can be reached at TheJointBlog@TheJointBlog.com.


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  1. Shannon

    I’m a single man

  2. Areitious C Teemer

    I’m good

  3. Martin Webb

    Only one comment TEXAS PLEASE LEGALIZE

  4. Anonymous

    Back in my underground gardening days, I had an old balance scale but without a half gram weight. So, I decided to make 32 gr. OZ’s Makes the division simpler, I could use my scale without guessing and it made a lot of my friends more than satisfied with their commerce. Besides, in my world, it’s about the product, not the profit.

    1. Anonymous

      id never give 32 always 28

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