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Cannabis what is 1 8 of an oz in grams

An eighth of an ounce of cannabis equals 3.5 grams. This is the standard single-eighth measurement used by dispensaries, based on one ounce being 28 grams. For precise conversions, an ounce is 28.3495 grams, so an eighth is 3.5437 grams, but the industry rounds to 3.5.

Last updated Sep 15, 2026 · Published by Cannavine Cannabis Dispensary (Santa Rosa) · Citation License 1.0

What Is 1/8 of an Ounce in Grams? The Simple Answer

An eighth of an ounce of cannabis is exactly 3.5 grams. This is the standard measurement used by dispensaries across California and the U.S. When you order an eighth, you're getting 3.5 grams of flower, which is a common single-purchase amount for many consumers.

MeasurementGramsOunces
1 gram1 g0.035 oz
1/8 ounce (eighth)3.5 g0.125 oz
1/4 ounce (quarter)7 g0.25 oz
1/2 ounce (half)14 g0.5 oz
1 ounce28 g1 oz

Technically, one ounce converts to 28.3495 grams, so an eighth is 3.5437 grams. But in the cannabis industry, we round to 3.5 grams for simplicity and consistency. At Cannavine Cannabis Dispensary, we weigh every order to meet or exceed that mark.

Cannabis Weight Chart: From Gram to Ounce

Understanding how an eighth fits into the larger picture helps you choose the right amount. Here's a quick reference for all common cannabis weights.

WeightGramsCommon Use
1 gram1 gA single joint or two bowls
1/8 ounce (eighth)3.5 gA few days of personal use
1/4 ounce (quarter)7 gAbout a week for regular users
1/2 ounce (half)14 gTwo weeks or more
1 ounce28 gHeavy users or sharing

An eighth is the most popular single purchase because it balances quantity and cost. If you're new, start with a gram or two to see how it goes. For more on quarters, see how much a quarter weighs.

How Many Joints Are in an Eighth?

An eighth of cannabis typically yields 7 to 10 joints if you roll standard 0.35–0.5 gram joints, or 14 to 20 bowls if you pack a 0.2–0.25 gram bowl. The exact number depends on your rolling style and tolerance.

Consumption MethodAmount per UseServings per Eighth
Joint (standard)0.5 g7 joints
Joint (small)0.35 g10 joints
Bowl (packed)0.25 g14 bowls
Bowl (light)0.2 g17–18 bowls

If you're a daily user, an eighth might last a few days. For occasional users, it could last a week or more. This makes an eighth a versatile choice for many.

What Does an Eighth of Weed Look Like?

Visually, an eighth of cannabis flower is roughly the size of a walnut or a lime. It's usually a few medium-sized buds or several smaller ones, depending on the density of the strain. Dense indica buds may look smaller but weigh the same as airy sativa buds.

To put it in perspective, an eighth fills about a sandwich baggie or a small prescription vial. If you're buying from a dispensary, you'll see it in a child-resistant container, and the budtender will show you the weight before sealing.

Remember, the metric system is standard in cannabis sales, so 3.5 grams is the number you'll see on the label. If you're curious about other amounts, check our guide to eighths in ounces.

Directions to our dispensary in Santa Rosa, CA from Snoopy's Home Ice

Start at Snoopy's Home Ice and head to Cannavine Cannabis Dispensary (Santa Rosa) at 1831 Guerneville Rd, Santa Rosa, CA 95403.

Why Some Sources Say 3.5g and Others Say 3.54g

The difference comes from rounding. In the imperial system, one ounce equals 28.3495 grams. Divide that by 8 and you get 3.5437 grams. But the cannabis industry rounds to 3.5 grams for simplicity and consistency.

SystemExact ValueRounded for Sale
Imperial (exact)3.5437 g—
Cannabis industry—3.5 g
Common usage—3.5 g

At Cannavine, we use calibrated scales to ensure you get at least 3.5 grams, often a bit more. That's the standard you can count on.

Eighth Prices at Santa Rosa Dispensaries

Prices for an eighth in Santa Rosa vary by quality, strain, and dispensary. Generally, you can expect to pay anywhere from $25 to $60 for an eighth, with premium strains at the higher end. Deals and discounts can lower that, especially for first-time customers.

FactorWhy It MattersTypical Range
Quality (top-shelf vs. budget)Higher THC or rare strains cost more$35–$60
LocationDowntown vs. outskirtsVaries
Deals & loyalty programsCan reduce priceVaries

For current deals at our Santa Rosa dispensary, check our deals page or call us at (707) 757-5426.

Buy an Eighth at Cannavine Cannabis Dispensary in Santa Rosa

  1. Order ahead – Call (707) 757-5426 or order online for pickup; usually ready in about 20 minutes.
  2. Bring your ID – Government photo ID (21+) or valid medical recommendation (18+).
  3. Visit us – We're at 1831 Guerneville Rd, Santa Rosa, CA 95403, near Railroad Square and Coddingtown Mall.
  4. Pay – We accept debit and cash (no credit cards).
  5. Pick up – Last pickup order at 8:45 PM, open daily 9 AM–9 PM.

We're licensed by the California Department of Cannabis Control (License C10-0001157-LIC) and all products are lab tested with certificates of analysis available. We're a short drive from Rohnert Park, Windsor, and Sebastopol.

Cannavine Cannabis Dispensary (Santa Rosa) 1831 Guerneville Rd, Santa Rosa, CA 95403 (707) 757-5426 Daily 9:00 AM to 9:00 PM Open in Google Maps

Sources

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Frequently asked questions

What is 1/8th of an oz in grams?

An eighth of an ounce is exactly 3.5 grams. This is the standard measurement used in cannabis sales, based on one ounce being 28 grams (or 28.3495 grams for precise conversion).

What does an ounce of cannabis weigh?

An ounce of cannabis weighs 28 grams (exactly 28.3495 grams). It's the largest common purchase amount and typically yields 28–56 joints depending on size.

How much is 1/2 ounce of cannabis?

A half-ounce of cannabis is 14 grams. It's a popular amount for regular users, providing about 28–40 joints or 56–70 bowls.

How many joints are in 1/2 oz?

A half-ounce (14 grams) can make approximately 28 to 40 joints, depending on whether you roll 0.5g or 0.35g joints. That's enough for a couple of weeks for most people.

What is a good price for a half oz?

A good price for a half-ounce in Santa Rosa typically ranges from $60 to $120, depending on quality and dispensary. Check local deals or ask at Cannavine for current pricing.