A guide to weed weights
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- Breakdown of weed measurements
- How to make sure you’re getting what you pay for
- Want to learn more?
Gram. Eighth. Quarter. Half. Ounce.
If you’re not familiar with how cannabis is weighed, measured, and sold, all of those terms can feel like a huge question mark. It’s clear they’re units of measurement for weed — but what exactly do they all mean?
Breakdown of weed measurements
Let’s start with the smallest unit of measurement and work our way up.
A gram is defined as “metric unit of mass equal to one-thousandth of a kilogram.” A gram is a small unit of measurement, which makes it a solid choice for cannabis consumers who don’t want to purchase weed in small amounts. For example, if they’re looking to try a new strain or don’t consume cannabis frequently.
The rest of the units of measurement for cannabis have to do with ounces — either in full or a fraction.
An eighth is an eighth of an ounce — or 3 .5 grams of weed. The eighth is one of the most popular, if not the most popular, weight to sell cannabis. For many people, an eighth of weed is the perfect amount; it’s enough to feel like you have plenty of weed at your disposal, but not so much that you feel like you have too much weed and not enough time to consume it.
The eighth, 3 .5 grams of weed, is one of the most popular, if not the most popular, weight to sell cannabis. Photo by: Gina Coleman/Weedmaps
The next unit of measurement is a quarter. A quarter refers to a quarter of an ounce, and it weighs approximately 7 grams. Technically, a quarter weighs 7.0874 grams, but the industry standard is to round down to the nearest gram.
A quarter refers to a quarter of an ounce, and it weighs approximately 7 grams. Photo by: Gina Coleman/Weedmaps
A half is a half-ounce of weed, which weighs 14 grams.
And a full ounce? An ounce weighs 28 grams.
When you’re purchasing weed in a dispensary, typically, the highest volume you can buy at any one time caps out at an ounce. But people who work within the cannabis industry, such as buyers and dispensary owners, can buy in larger quantities — including pounds and kilograms. One pound is made up of 16 ounces — which weighs in at a truly impressive 448 grams.
Here’s a quick reference chart of how weed is measured — and how much each measurement weighs in grams:
- 1 eighth = ⅛-ounce = 3.5 grams
- 1 quarter = ¼-ounce = 7 grams
- 1 half = ½-ounce = 14 grams
- 1 ounce = 28 grams
- 1 pound = 16 ounces = 448 grams
How to make sure you’re getting what you pay for
When you purchase weed at the dispensary — whether you’re getting a single gram to test out a new grower or investing in a full ounce of your go-to strain — you want to make sure you’re getting what you paid for. And the only way to know for sure that your cannabis is the proper weight is to weigh it.
Your budtender should weigh out your cannabis in clear view; this way, you can see exactly how many grams are being weighed out. Photo by: Gina Coleman/Weedmaps
Your budtender should weigh out your cannabis in clear view; this way, you can see exactly how many grams are being weighed out — and how that corresponds to how much you asked for. If you get to the dispensary and can’t remember the gram conversions, just ask your budtender; he or she will be able to tell you how many grams are in an eighth, quarter, half, or ounce — and then can weigh out your weed to show you that the cannabis you’re taking home is the accurate weight.
In some states with adult-use cannabis laws, flower is required to come pre-packaged and was measured prior to arriving to the dispensary. If you still want to ensure that its the weight indicated on the packaged, you can weigh the flower with a scale at home.
Want to learn more?
Want to explore more about weed measurements and weights? Check out these articles:
A guide to weed weights Copy article link to clipboard. Link copied to clipboard. Contents Breakdown of weed measurements How to make sure you’re getting what you pay for
Best Scales for Weed + Weight Measurement Charts
Best weed scales—2020 reviews of the best scales for weed. Steal our weed weight measurement charts! Buy cheap digital scales online. All you need to know about buying and using a weed scale.
Weight Measurement Conversion Table Charts
Best Selling Cheap Pocket Scale for Weed
The best selling scale for weed this year—American Weigh Scales AWS 1KG Digital Pocket Scale—is an all-in-one scale for your weed weighing needs. Easy to use with only 3 buttons: Tare, On/Off, and Mode. Converts between grams, ounces, troy ounces and pennyweights. Auto off function for saving power (2 AAA batteries included). Built-in durable cover. Ships calibrated.
One of the top rated and most popular AWS products of all time. Many sellers list this weed scale for sale at right over 10 dollars, so check the link below to buy it at lowest price. Backed by a 10 year warranty.
Most Accurate Cheap Digital Scale for Weed
The GDEALER Digital Pocket Scale is a very cheap weed scale that’s been a best seller for years. This durable, lightweight digital scale for weed performs at a level of accuracy and precision that one would expect from more expensive models. Calibration may be slightly off from the factory, so make sure to use a calibration weight or known object to adjust it.
The scale has the capability to measure, convert and count multiple weight units: g/ct/dwt/ozt/oz/gn. It’s small enough to fit in a large pocket. Powered by 2 AAA batteries (included). Quality guaranteed by a 1 year warranty.
Best Cheap Portable Digital Scale for Weed
The American Weigh Scales Black Blade Series BL-100-BLK Digital Pocket Scale is the original blade design weed scale. As shown in the picture, the scale has a control arm that pivots out during usage. 3 buttons for easy use: On/Off, Tare and Mode. Weighs/converts grams, ounces, grains and carats.
This model is sold at a super affordable price—just over 15 dollars. Its sturdy plastic cover doubles as a weighing tray. Uses 2 AAA batteries (included). American Weigh Scales (AWS) digital scales come with a 10 year warranty.
Most Durable Cheap Digital Scale for Weed
Brifit Digital Mini Scale. A durably built pocket scale for an affordable price. Stainless steel platform, rugged plastic cover and bright backlight. Weighs up to 200 grams. Converts between 6 units: g, oz, ozt, dwt, ct, gn.
The auto off function helps conserve battery use (2 AAA included). Comes with 50g calibration weight. Easy to carry, easy to clean and easy to use.
Best Stealth Digital Scale for Weed
Horizon CDS-100 Digital Precision Scale CD Jewel Case. This stealthy scale for weed looks just like a real CD case. Try putting in a CD cover that nobody will want to open and “pow!” you’ve got a secret weed scale that won’t draw any attention. Discreet and fun.
It can handle small amounts of weed—weighing up to 100 grams max in .01 gram intervals. Multiple weighing modes (gram, carat, ounce, grain), tare and counting functions. 2 CR2 batteries required (included). Stainless steel platform. Super low price.
|Size||Portable stealth scale|
Best Digital Milligram Scale
American Weigh Scales GEMINI-20 Portable Milligram Scale. If you’re weighing delicate herb powders or oils, this digital milligram scale is the right choice for you. Also pick up some LabExact Weighing Papers to go with it. The GEMINI-20 Milligram scale is tested to be within +/- .005 gram accuracy.
For a very low price get the functionality of an expensive lab scale. This model comes with tweezers, 1 calibration weight, 1 tray and 2 AAA batteries. Equipped with a flip-down protection lid. Backed by a 10 year warranty from AWS.
Large Scales for Weed
There was a time when using large kitchen scales was commonplace among growers. These scales run upwards of 300 dollars and can weigh heavy loads of weed accurately. Take this one here:
CAS EC-30 EC Series High Accuracy Counting Scale
It has a heavy 30 kilogram (30,000 gram) maximum capacity but only a 0.002lb (
1 gram) readability. That means the display number value will move at whole grams at its smallest increments.
Now that doesn’t mean this model is not accurate; don’t confuse readability with accuracy. It comes certified calibrated and accurate. The trick is to add or remove buds until you tick the gram number value up or down. If you want to weigh out an eighth with this, good luck. The best you can do is weigh a quarter and cut it in half, or add calibration weights to the mix.
Large scales are best suited for large quantities of weed. If you’re filling big bags of buds all day, this scale may be a good option for you. We’ve used these kinds of scales for years and they work great for weighing pounds and kilos.
|Size||Large table scale|
Next, take a look at this one:
Best Cheap Large Table Scale for Weed
Ozeri Pronto Digital Multifunction Kitchen and Food Scale. This budget table scale is suitable for roughly measuring large quantities of herb. It comes in a variety of colors to choose from. Built with the latest sensor technology to ensure accuracy. 11.24 pound (5,100 gram) capacity. Readability is displayed in half-gram increments.
Simple and easy to use—this scale only has two buttons: On/Off/Tare and Unit (g, lbs, lbs:oz, oz, ml). Runs of 2 AAA batteries (included). Automatically turns off.
|Size||Large table scale|
How to calibrate a weed scale?
Calibration & Adjustment
Calibration and adjustment are two separate terms often grouped together.
- Calibration is the process of weighing a known object and comparing the results with the object’s true weight value.
- Adjustment , or calibration adjustment, is the process of adjusting a scale to the true weight value of a known object. This is what “calibrating your scale” is.
Cheap digital scales often need adjustment straight from the factory. This can be done via the scale’s calibration mode (Cal). Use calibration weights or a solid, non-porous and non-static retaining object.
So what’s the best way to calibrate a scale for weed?
A calibration weight is an exact known weight that can be used as a reference when adjusting a scale.
The American Weigh Scales Calibration Weight Kit ( Amazon link ) contains a range of gram and milligram weights:
- Gram Weights: (1) 1 gram, (1) 2 gram, (1) 5 gram, (1) 10 gram, (2) 20 gram, (1) 50 gram
- Milligram Weights: (1) 10 mg, (2) 20 mg, (1) 50 mg, (1) 100 mg, (1) 200 mg, (1) 500 mg
Put a nickel on the scale
A US nickel made during or after the year 1866 is made to a weight of 5.000 grams . Many stoners already know that you can use a nickel as a 5 gram calibration weight.
Now this doesn’t take into factor the wear-and-tear degradation of a circulated coin, so if you’re going to use a nickel or other coin in adjusting the calibration of your scale, it should be the most pristine coin you can find.
US Coin Weight Chart for Calibration Adjustment
Weed Scale Terminology
Accuracy VS. Precision
Accuracy is the degree to which a measurement relates to its true value. This is commonly defined as +/- (number) (% or weight unit).
For example, lets put a 10 gram calibration weight on the popular AWS pocket scale. Say the display reads 100.01. That means the accuracy of the balance is 0.01 grams or one centigram; it has an accuracy of +/-0.1% or +/-0.1 grams.
Remember that accuracy is dependent on how well your scale is calibrated. A high quality calibrated digital scale for weed should be within +/- one unit of its lowest display resolution.
All measuring devices have their limits. Other factors that affect an accurate weight reading include:
- uncertainty of measurement
Precision – Repeatability
Precision is not a synonym for accuracy—in fact it’s completely different! A scale may be very accurate, but not at all precise at the same time.
Precision, aka repeatability, refers to the degree to which a scale gives identical measurements when weighing a known object under the same conditions. It is how much your scale varies when weighing the same thing again-and-again.
You can test this yourself by weighing an object repeatedly. First calibrate your scale. Then record each weight total and figure out the deviation between measurements. There’s your level of precision. Add these numbers all together and the the mean sum will give you a rating to compare.
Let’s do an precision vs. repeatability test by weighing a pound of weed on two digital decigram scales, ten times each. We have Scale A and Scale B.
Ideally, the scales should read 453.59 grams for a pound:
|Scale A||Scale B|
|453.59 (4x)||453.59 (2x)|
|453.63 (4x)||453.58 (3x)|
|453.55 (2x)||453.60 (3x)|
Scale A reads 453.59 grams four times, 453.63 grams four times and 453.55 grams two times.
Scale B reads 453.59 grams two times, 453.58 grams three times, 453.60 grams three times and 453.61 grams one time.
Scale A is more precise , but less accurate. Despite the weight values being further from the test weight, its repeated measurements agreed with their mean more. Simply put, the results are closer to each other.
Scale B is more accurate , but less precise. While the weight values are closer to the test weight, its repeated measurements agreed with their mean less; the results are further from each other.
Readability is the smallest increments that a scale can display.
For instance, if we take a large table scale with a readability of 0.002lb (
1 gram), the weight value displayed will never be a 3.5 or 0.1 amount, but only whole gram .0 increments. Although the scale may be accurate at reading these fraction of a gram amounts, the LED number will only trip over/under when it hits a full point zero weight amount.
- 1 gram (0.0002 lb) readability will display in whole gram increments.
- 0.5 gram (0.0001 lb) readability will display in half-gram increments.
- 0.1 gram readability will display in decigram increments
- 0.01 gram readability will display in centigram increments.
- 0.001 gram readability will display in milligram increments.
Readability is also know as scale division, scale interval, digit, d and resolution.
453.592 g (1 pound) is weighed on a 0.001 g readability scale.
The weight will read as 453.592 g
453.592 g (1 pound) is weighed on a 0.1 g readability scale.
The weight will read as 453.6 g
Maximum Capacity is the maximum weight a scale can measure. Also called max rated capacity.
There are many good scales for weed with both high and low maximum capacities. Generally speaking, the higher a scale’s maximum capacity is the lower its readability will be.
- The AWS pocket scale has a high 1000 gram (2.2 pound) maximum capacity, although it has only a 0.1 gram (whole gram) readability.
- The AWS GEMINI has a low 20 gram maximum capacity, but a high 0.001 gram (milligram) readability.
Divisions are the total amount of possible increments a scale can equate.
Figure out your weed scale’s divisions by dividing its capacity with its readability (capacity – readability = divisions).
A. The AWS pocket scale has a 1,000 gram capacity and a 0.1 gram readability. 1,000 ÷ 0.1 = 10,000. This scale has 10,000 divisions.
B. The Ozero Pronto large scale has a 5,100 gram capacity and a 1 gram readability. 5,100 ÷ 1 = 5,1000. This scale has 5,100 divisions.
Why is my weed scale reading inaccurately? Errors, help!
There are a number of factors that can account for inaccuracy or error (E) in a digital scale’s reading. The accuracy and precision of a weed scale may vary with the environment its exposed or stored in. Properly stored, a good scale will last over a decade. Problematic factors include:
- Dust – Dust accumulating on the scale’s platform, or building up inside of the casing is detrimental to longevity. Keep the scale clean—you can clear out the cracks and crevices with compressed air dusters.
- Temperature – Most digital scales for weed will work within in a temperature range between 32°F (0°C) and 104°F (40°C). Scales should be stored at a room temperature of 50°F (10°C) to 86°F (30°C). They should never be directly exposed to the sun’s heat and UV rays.
- Humidity – Humidity can build up in electronics and cause them to fail. Anybody who has lived in Hawaii can attest to this. Try to keep your scale in the driest place you got if you live in a humid location.
- Air Currents or Draft – One of the most common reasons for an inaccurate weight reading. Air currents or drafts adversely affect sensitive digital scales. To obtain high precision milligram readings, the scale should be protected with draft shields in a closed environment.
- Air Buoyancy – Objects with a low density may be affected by air buoyancy. Displaced air by our bodies and other organisms that creates an upward force caused by atmospheric pressure. Reference: https://www.nist.gov/document-13101
- Gravity – Gravity should really have no difference in weighing if you adjust your scale’s calibration at the same place you are using it. There are slight gravitational variations in altitude and latitude that can alter the most sensitive measurements. Read more about gravity and altitude.
If your weed scale is giving you too many problems, just buy a new one. Cheap weed scales are a dime-a-dozen.
How much does weed really weigh?
Don’t measure short! Decigrams (0.1 gram) and centigrams (0.01 gram) often get forgotten in the measurement of weed. One ounce is 28.35 grams to the centigram.
Most dealers give out exact twenty-eight point zero gram ounces. By cutting down the 28.35 gram ounce to just 28.00, a remainder of 5.59 grams is left over per pound. This is understood as the dealer’s bonus.
16 x 28.00 grams = 448 grams. One pound = 453.592 grams
That means sixteen 28.00 gram ounces adds up to 448.00 grams, which is over 5 ½ grams short of a true pound (453.592 grams).
Cannabis Weight References:
- How much does a kilo weigh on a scale? A kilo weighs 1000 grams, or 32.274 ounces.
- How much does a pound weigh on a scale? A pound weighs 454 grams, or 16 ounces. However, 448 grams is frequently used by dealers.
- How much does a half pound weigh on a scale? A half pound weighs 227 grams, or 8 ounces. 224 grams is the standard half pound package.
- How much does a quarter pound weigh on a scale? A quarter weighs 113.4 grams, or 4 ounces. 112 grams is more common.
- How much does an ounce weigh on a scale? An ounce weighs 28.35 grams, although 28.0 grams is the norm for cannabis.
- How much does a halfounce weigh on a scale? A half ounce weighs 14.1748 grams, usually rounded down to 14 grams.
- How much does a quarter ounce weigh on a scale? A quarter ounce weighs 7.087 grams, pretty close to straight 7 grams.
- How much does an eighth weigh on a scale? An eighth weighs 3.544 grams, mostly being given as 3.5 gram bags.
- How much does a dub sack (twenty sack) weigh on a scale? Depending on where you are, a dub sack or twenty sack could mean 2 grams of bud. The terms are not based on weight but rather cost, which makes the true weight up to the dealer’s discretion.
- How much does a gram weigh on a scale? A gram will read out 1.0 grams on a scale, or 1000 milligrams.
Among friends in the cannabis community, it’s common to add a bit more weight to the bag as a perk, aka hooking it up.
Hooking it up explained:
Let’s say that Ben wants 3 ½ grams (an eighth) of bud from Cheap Charlie. Cheap Charlie gives Ben more than 3 ½ grams of weight in bud—3.6 grams. Cheap Charlie hooked it up. Ben gets more bud than he expected, and is stoked about it. It’s a good experience for sure.
The additional weight perk can be just a small amount. A real Cheap Charlie will enjoy the benefits of hooking it up while only adding an extra tenth of a gram per eighth. So the bare minimum would be:
- an eighth is 3.6 grams
- a quarter is 7.2 grams
- a half is 14.4 gram
- and an ounce is 28.8 grams
For not even a full gram per ounce Cheap Charlie can hook it up. Of course, the more extra weight the merrier. That’s called hooking it up fat. All easy to do with a digital gram scale.
The weight of weed changes
Cannabis buds precisely weighed out to fractions of a gram may alter in weight naturally when exposed to changes in the environment.
Cannabis is organic matter that reacts to air. If you’re always popping off jar lids to get a whiff of the dank, then you’ve likely seen this first hand.
Humidity levels vary everywhere, and with the humidity variation so will the weight of cannabis buds unless they are sealed airtight and not opened—see stash jars and containers .
Weed weight scam
One shady trick that certain dealers do is misting water on dried buds, thereby making them weigh more. At any rate, the moisture may lead to dangerous mold problems.
Botrytis cinerea , aka gray mold or bud rot, is a common fungal disease that grows on marijuana in humid conditions.
A type of hypersensitivity pneumonitus known as Winegrower’s lung is caused by coming into contact with Botrytis mold. So please avoid this practice for everyone’s safety.
Why buy a scale for weed on the net?
Ever been shorted on a bag? Whatever happened, we can agree that by now people should be using accurate, precise scales when weighing marijuana.
Highly-accurate digital scales are priced affordably online—and should only get cheaper as seller competition increases. Many of the best scales for marijuana on this list are for sale at under twenty bucks.
Long gone are the days when buyers have to fork out hundreds of dollars at a headshop to get a digital scale of comparable quality. Trusted brands like American Weigh Scales offer great deals on some of the best affordable scales for weed.
While supporting your local businesses is still a great thing to do, many stoners are on a fixed budget when it comes to buying a digital scale. Online eCommerce websites carry a large assortment of digital scales that are dirt cheap, tested and have positive reviews from buyers.
You’ll get good a digital scale for a fraction of the price you’d pay elsewhere.
When buying a weed scale for sale online:
Be sure to consider the following when selecting the right weed scale for your needs:
The specifications of a digital scale should match your intended usage.
A large platform scale with a high maximum capacity and a relatively low readability is appropriate for cannabis growers and dealers weighing large amounts of weed, generally over a pound.
A portable or pocket size scale with a low maximum capacity and high readability is ideal for cannabis growers and dealers weighing weed in divisions of a pound.
Most cheap digital scales are made from sturdy ABS plastic casing and feature a stainless steel platform. As you cannot hold the product physically when shopping online it’s advised to scan through reviews of the product before you buy. Also take into account the seller of the item.
One thing you’ll notice when buying a digital scale online is many sellers are selling similar looking models. This is because the scales are sold white label to distributors. In this instance it’s recommended to purchase with the most reputable seller.
Size and Appearance
The size and appearance of a digital scale is a large factor in its marketability. Scales have evolved from simple instruments to highly-functional computers that come in a range of interesting designs.
You will want to buy a weed scale that fits your weighing needs, whether that’s a large scale for big crops or a pocket scale for dealing.
Price is a major consideration when shopping for the best weed scales online. Thankfully, quality modern digital scales can be purchased on a small budget—the best ones are verified by hundreds of positive reviews.
All of the weed scales reviewed here with the exception of the pro kitchen model are priced super cheap. You should be able to find a good scale in the price range of ten to twenty-five dollars.
Handheld Postal Scale
If you’re a true stoner you’ll know what the contraption below is:
These little hand scales, known as postal scales, work better than you might think. They are handy for weighing out ounces on the fly.
A good rule of thumb to use when weighing weed with postal scales is to hit a third over the mark of your measurement—⅓ past the tick. Nobody wants to get shorted on a bag.
Forget the batteries and hassle of a digital scale, this is the true “pocket scale”.
Best Scale for Weed Shortlist
|AWS 1 KG Pocket Scale||1 kg||0.1 g||VIEW PRICE ►|
|GDEALER Pocket Scale||500 g||0.01 g||VIEW PRICE ►|
|AWS Black Blade||100 g||0.01 g||VIEW PRICE ►|
|Brifit Digital Mini Scale||100 g||0.01||VIEW PRICE ►|
|Horizon CDS-100 CD Scale||500 g||0.01 g||VIEW PRICE ►|
|AWS GEMINI Milligram Scale||20 g||0.001||VIEW PRICE ►|
|CAS EC-30 High Accuracy Scale||30 kg||1 g||VIEW PRICE ►|
|Ozeri Pronto Large Scale||5 kg||0.5 g||VIEW PRICE ►|
Disclaimer: We do not promote or undertake in illegal activity.
Best weed scales—2020 reviews of the best scales for weed. Steal our weed weight measurement charts! Buy cheap digital scales online.