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Definitive Guide to Weed Amounts and Pricing
Eighth = 3.5g = 7-11 joints = $25-60. Quarter = 7g. Learn what every weed amount means in sessions, days, THC strength & price. Complete guide.
Written by Sipho Sam
October 13th, 2025
An eighth is 3.5 grams of cannabis. You can roll 7 to 11 joints from an eighth.
For someone who smokes lightly, an eighth lasts 3 to 7 days.
These numbers answer the question everyone asks when standing at a dispensary menu or shopping online.
This guide translates every common weed amount into sessions, time, strength, and cost so you know exactly what to buy and expect.
Table of Contents
Common Weed Amounts From Gram to Ounce Explained
How Many Joints and Bowls You Get From Each Amount
How Long Your Weed Actually Lasts
THC Percentages Converted to Milligrams Per Joint
Current Prices for Every Weed Amount
First-Timer Amounts and Pacing Strategies
Legal Limits and Smart Purchasing
Making Your Weed Last Longer
Your Perfect Weekly Amount Finder
Common Weed Amounts From Gram to Ounce Explained
These are the standard measurements you'll see everywhere:
A gram is 1 gram of cannabis; it fits in your palm like a large grape.
An eighth is 3.5 grams and looks about the size of a ping-pong ball.
A quarter is 7 grams.
An ounce is 28 grams and resembles a small coconut in volume.
Dense, compact nugs look smaller than fluffy flower at the same weight. This surprises first-time buyers who expect more volume, though the scale doesn't lie.
Normal quantities range from 1 gram for sampling to 7 grams for a weekly supply.
The eighth (3.5 grams) is the most popular purchase size because it balances cost and quantity without committing to more than most people use weekly.
THCa flower and other cannabis products come in these standard sizes so you can match your purchase to your actual consumption pattern.
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How Many Joints and Bowls You Get From Each Amount
Joints use 0.3 to 0.5 grams of flower.
Bowls need 0.1 to 0.3 grams.
Prerolls come in 0.5-gram and 1-gram sizes.
An eighth yields 7 to 11 joints, depending on how you roll. The same eighth gives you 10 to 35 bowls if you prefer a pipe or bong.
A quarter roughly doubles those numbers.
These conversions assume typical rolling and packing habits. Tighter rolls use more flower while looser bowls use less.
Why Preroll Sizes Matter
Prerolls labeled as 1 gram are larger than most hand-rolled joints.
A typical hand-roll uses 0.3 to 0.5 grams, making it considerably smaller.
A 1-gram preroll contains roughly double the flower of an average joint, which means double the sessions if you don't finish it in one sitting.
0.5-gram prerolls offer better pacing control, as you can finish one without feeling obligated to power through more than you want.
How Long Your Weed Actually Lasts
Light use means 1 to 3 grams per week.
Moderate use is 3.5 to 7 grams per week.
Heavy use starts at 14 grams or more per week.
An eighth lasts 3 to 7 days for light users.
The same eighth lasts 1 to 3 days for moderate users.
These timelines come from community experience, not theoretical math.
Research shows purchasers average 1.35 grams per day, while non-purchasers (those who get cannabis from friends or grow their own) average 0.71 grams per day.
Most people overestimate how long flower will last.
Many think an eighth will stretch for weeks, but reality brings that down to days once you account for sharing, tolerance building, and the occasional half-finished joint.
Watch: How To Use Cannabis Flower
THC Percentages Converted to Milligrams Per Joint
A gram of 20% THC flower contains 200 milligrams of THC total.
A 0.3-gram joint from that same flower contains approximately 60 milligrams of THC before any losses from smoking.
Only 25 to 30 percent of THC reaches your system when you smoke.
That 60-milligram joint delivers roughly 15 to 18 milligrams of absorbed THC.
This math matters when comparing flower to edibles because a 10 milligram edible absorbs more predictably than smoking.
The effects of edibles are also stronger because your liver processes them differently.
Modern flower runs 20 to 30 percent THC in most dispensaries, which is considerably stronger than cannabis from a decade ago.
The potency often surprises new users and people returning after years away.
Current Prices for Every Weed Amount
A gram costs $10 to $20 in most US markets.
An eighth runs $25 to $60.
A quarter costs $50 to $100.
A half goes for $100 to $200.
An ounce ranges from $150 to $400 or more.
Prices vary by state, quality, and whether you're buying budget flower or premium strains.
The per-gram cost drops as quantity increases.
An eighth costs $10 per gram at $35, while a half at $120 costs about $8.50 per gram.
These savings only matter if you use the larger amount before it degrades.
Thirty dollars typically buys an eighth in most markets, making the eighth the entry point for most shoppers who want more than a single gram.
Dry herb vaping stretches the same flower 2 to 3 times longer than smoking.
One-hitters and smaller joints reduce the burn rate.
These tactics work better than buying bulk you won't finish.
First-Timer Amounts and Pacing Strategies
Start with 2 to 3 puffs, wait 10 minutes, then reassess your feelings before continuing.
This micro-approach prevents the overwhelming experience many first-timers report.
Taking your time lets you find your comfortable level without overshooting it.
Single grams work well for testing tolerance.
0.5 gram prerolls give you even more control since they're sized for a manageable session.
You can always smoke more, but you can't un-smoke what you've already consumed.
Modern flower's 20 to 30 percent THC content catches people off guard because what looks like a small amount delivers more than expected.
Many people who tried cannabis years ago find today's flower considerably stronger.
Sharing a joint or passing a bowl around naturally controls your intake because taking turns means built-in breaks between puffs.
This social pacing often works better than solo sessions for beginners.
Important: Mood is not a medical or wellness authority. This information is for general knowledge only. Consult licensed healthcare professionals for any health-related questions or concerns.
Legal Limits and Smart Purchasing
Most adult-use states set possession limits at 1 ounce (28 grams).
Some states allow more medical patients, so check your local laws since limits vary.
Licensed dispensaries offer tested products with accurate weights and labeled potency, which means you know what you're getting.
Unregulated sources can't guarantee the same accuracy or safety.
If you're concerned about weights, a digital scale at home lets you verify them, and most dispensaries do it correctly.
Understanding how hemp-derived cannabis is legal helps you navigate the market with confidence.
Making Your Weed Last Longer
Store bulk purchases in airtight containers in a cool, dark place.
Humidity packs help maintain freshness for half-ounces and larger quantities.
Light, heat, and air degrade THC over time.
Vaping provides the biggest efficiency boost because the same flower lasts 2 to 3 times longer with a dry herb vape than smoking.
One-hitters and smaller joints also stretch your supply by preventing waste from letting joints burn between puffs.
Most people buying grams or eighths consume them before freshness becomes an issue.
Storage matters more for quarters, halves, and ounces that might sit for weeks.
Your Perfect Weekly Amount Finder
A few puffs daily needs 1 to 2 grams per week.
One joint each night requires an eighth.
Multiple daily sessions or regular sharing calls for a quarter or more.
Match your purchase to your pattern because buying more than you'll use in two weeks risks degradation.
Buying less means more frequent trips or orders.
Understanding weed flower tiers helps you pick the quality level that fits your budget and preferences.
Pick the size that matches your actual consumption, not your aspirational consumption.
You Now Have the Complete Toolkit
You understand what amounts mean in sessions and days, you grasp strength through THC percentages, you see the value math clearly, and you can pick your perfect size.
Pacing and enjoyment matter more than chasing the highest THC numbers or buying the largest quantity.
Start small, pay attention to your experience, and adjust from there.
You're ready to shop with confidence.
