Kratom Capsule Sizes
7 November 2026
Kratom capsule sizes are shell numbers, not weights. A size 00 shell holds about 0.91 mL, a size 0 about 0.68 mL, and the milligrams inside depend on how dense and fine the powder is. In practice, most kratom capsule listings fall between roughly 400 mg and 750 mg of powder per shell, and the label should state the actual fill weight.
This guide explains what the numbers mean, gives a size-by-size volume and weight table, and shows how to convert grams into capsule counts for 1 g and 5 g. It also covers what a trustworthy label and batch lab report should show. Kratomvia sells kratom powder for soap making and crafting, so we also explain why weighing powder on a scale is the more repeatable way to measure it for projects.
TL;DR
- Capsule sizes run from 000 (largest) to 5 (smallest). The number tells you the shell’s volume, not a fixed weight of powder.
- At a typical powder density of 0.6 g/mL, the fill is about 822 mg (000), 546 mg (00), 408 mg (0), 300 mg (1) and 222 mg (2).
- Denser or finer powder weighs more in the same shell. The same size 00 capsule can hold close to double the weight.
- To convert grams to capsule counts, divide the total milligrams by the labeled fill weight per capsule.
- Kratomvia powder is sold for soap making and accessory use. A digital scale gives more repeatable results than counting shells.
Table of Contents
- What the capsule size numbers mean
- Why milligrams change with powder density
- Kratom capsule size chart: volume and fill weight
- How many capsules equal 1 gram?
- How much is 5 grams, and how many capsules is that?
- Comparing price per gram, not per capsule
- Why we weigh powder instead of counting shells
- How to read a kratom capsule label and lab report
- Our perspective on capsule sizes
- Browse Kratomvia powders
- Quick reference: choosing by what you need
- FAQ
- Sources
What the capsule size numbers mean
Hard capsule shells are sold in a numbered sequence. The usual order, from largest to smallest, is 000, 00, 0, 1, 2, 3, 4 and 5, as NutraHow’s capsule size glossary lays out. The counterintuitive part is that more zeros means a bigger shell. A 00 is larger than a 0, and a 000 is larger than both.
Each number is tied to a set of dimensions and a nominal capacity. That is a reference point, not a promise. The same glossary notes that a size designation does not guarantee that two suppliers’ shells have identical dimensions, and it does not fix a fill weight. If exact dimensions matter to you, the supplier’s own specification drawing is the document to check.
For most kratom products you will see only four sizes in practice:
- Size 000: the largest common shell, less often used for powders sold at retail.
- Size 00: the most common size for botanical powders, and the one most listings mean when they say “standard” capsule.
- Size 0: a mid-size shell that is easier to handle and often used for smaller fills.
- Size 1 and 2: smaller shells, sometimes used for extracts or for lower fill weights.
Why milligrams change with powder density
A capsule has a fixed internal volume. What goes in is measured by weight, and weight depends on density. Density is how much a given volume of powder weighs, and for botanical powders it changes with grind fineness, moisture, how much the powder is tamped, and whether it is a raw leaf powder or a processed one.
The capsules.com fill weight chart shows this with a clear example. A size 00 shell holds 0.91 mL. Filled with a light powder at 0.6 g/mL, it holds 546 mg. Filled with a dense powder at 1.2 g/mL, it holds 1,092 mg. Same capsule, double the weight. The same arithmetic applies to every standard size.
NutraHow makes the same point from the other direction: there is no single milligram value for a capsule size, and a chart that quotes milligrams without naming the density it assumed has left out a necessary input.
That is why you will see different numbers on different websites. One chart may assume a light, fluffy powder and another a packed one. Neither is wrong. They are answering different questions.
Kratom capsule size chart: volume and fill weight
The volumes below come from Capsule Connection’s sizing information. The milligram columns apply the same two densities that page uses, 0.6 g/mL for a light powder and 1.0 g/mL for a denser one.
| Capsule size | Volume | Fill at 0.6 g/mL | Fill at 1.0 g/mL |
|---|---|---|---|
| 000 | 1.37 mL | 822 mg | 1,370 mg |
| 00 | 0.91 mL | 546 mg | 910 mg |
| 0 | 0.68 mL | 408 mg | 680 mg |
| 1 | 0.50 mL | 300 mg | 500 mg |
| 2 | 0.37 mL | 222 mg | 370 mg |
Capsule Connection also publishes a rounded rule-of-thumb chart: about 1,000 mg for a 000, 735 mg for a 00, 500 mg for a 0, 400 mg for a size 1 and 200 mg for a size 3. It states plainly that the weight of the contents depends on the density and fineness of the powder.
Read the chart as a range. Real kratom capsule listings typically state 500 mg per capsule, which sits inside the range for a size 00 or a size 0 depending on the powder. The label figure is the one that counts.
Leaf powder versus extracts
Contents can differ between products even in the same shell. A finely milled leaf powder packs differently from a coarser grind, and concentrated extracts are a different material altogether. Some retailers list extract capsules at a much smaller fill, such as 0.5 g in a 00 shell, because an extract is a different product from leaf powder rather than a bigger or smaller version of it. If you want that distinction in more detail, our kratom powder vs extract comparison walks through it.
The practical rule: compare capsule products only by the labeled milligrams per capsule and the material, never by shell size alone.
How many capsules equal 1 gram?
One gram is 1,000 mg. Divide that by the labeled fill weight per capsule.
| Labeled fill per capsule | Capsules per 1 g |
|---|---|
| 250 mg | 4 |
| 300 mg | 3.3 |
| 400 mg | 2.5 |
| 500 mg | 2 |
| 546 mg | 1.8 |
| 735 mg | 1.4 |
Because you cannot split a capsule cleanly, fractional results show why a gram rarely maps onto a whole number of shells. Our companion article on how many capsules are in a gram works through the math with more fill weights.
The formula is the same every time:
- Find the labeled milligrams per capsule on the product page or label.
- Convert your target weight to milligrams (1 g = 1,000 mg).
- Divide the target by the per-capsule figure.
- Round to the nearest whole capsule, and recheck the total weight.
How much is 5 grams, and how many capsules is that?
Five grams is 5,000 mg. The capsule count then depends entirely on fill weight.
| Labeled fill per capsule | Capsules in 5 g |
|---|---|
| 222 mg | about 22.5 |
| 300 mg | about 16.7 |
| 408 mg | about 12.3 |
| 500 mg | 10 |
| 546 mg | about 9.2 |
| 735 mg | about 6.8 |
The 500 mg row is the simplest to remember: ten capsules per five grams. The other rows show why two bags of capsules with the same count can contain different total weights. A bottle of 100 capsules at 300 mg holds 30 g, and one at 500 mg holds 50 g.
The same logic works for any package. Natural Life, for instance, lists each capsule at 500 mg, so 56 capsules equal 28 g, as stated on its tablets versus capsules page. Multiply count by labeled fill and you have the net weight, which is the number to use when comparing price per gram.
Comparing price per gram, not per capsule
Capsules add shell cost, filling labor and packaging. A bottle’s price is only meaningful when converted to a price per gram of contents:
- Multiply the capsule count by the labeled milligrams per capsule.
- Divide by 1,000 to get grams.
- Divide the bottle price by the grams.
A 60-count bottle at 500 mg holds 30 g. A 60-count bottle at 300 mg holds 18 g. If both are the same price, the first costs about 40% less per gram. Shell size on its own would not have told you that.
This is also where powder tends to compare well. Powder is sold by net weight, so the price per gram is on the page already. Our powder starts at €14.90, and each product page lists the weight options.
Why we weigh powder instead of counting shells
Kratomvia sells kratom powder for soap making and accessory use, and we do not market it for ingestion. For craft work, repeatability matters more than shell size. A scale reads the same way every time, regardless of how finely the powder is milled or how firmly it settles.
Here is what that means in practice for a soap maker or craft user:
- Batch consistency: weighing a set number of grams of powder per batch gives the same ratio in every bar. Counting capsule shells does not, because fill weights vary with density.
- Scalability: if you double a recipe, you double the grams. Doubling a capsule count only works if both products have the same labeled fill.
- Record keeping: noting grams and the batch number of the powder lets you repeat a good result.
A precision tool helps here. Our digital scale for kratom manufacturing is built for exactly this kind of small-quantity weighing. If you are deciding between formats for a project, powder or capsules for kratom soap covers why loose powder is the more practical starting point for repeatable, compliant batches.
How to read a kratom capsule label and lab report
Whatever format you are looking at, the label and the lab report should let you trace what is in the package. Check for these items:
- Net weight and count: both stated, so you can calculate the total grams yourself.
- Milligrams per capsule: a labeled fill weight, not just a shell size.
- Material: whether it is leaf powder or an extract.
- Batch or lot number: it should match a specific lab report.
- Independent lab results for that batch: a report that names the batch, the testing laboratory and the date, and covers purity items such as heavy metals and microbial results.
- Seller contact details: a real business address or contact route.
At Kratomvia, every batch is independently lab tested and traceable by batch number, and laboratory results are publicly available. That traceability is the reason we recommend always asking which batch a lab report belongs to, whichever supplier you buy from. Our kratom information guide collects more background on sourcing and testing.
Legal status and local rules
Kratom’s legal status differs by country and, in the United States, by state and sometimes by city. Some jurisdictions restrict sale, possession or import, and the rules change. Before ordering anything, check the current law where you live and where the package will be delivered, and confirm with your local authority or a legal professional if you are unsure. Kratomvia products are sold as soap-making and accessory items to adults, and they are not intended for ingestion.
Our perspective on capsule sizes
Capsule size is one of the most misunderstood numbers in the kratom market. A shell number looks precise, but it describes volume. The weight inside is set by the powder, and two products in the same size can differ by a wide margin.
That is why we built our approach around weight and traceability instead of shell counts. We source from a small, known network of growers in Southeast Asia, we send every batch for independent laboratory testing, and we make batch results public so you can match a result to the product in your hands.
Our Maeng Da powders in Green, Red, White and Yellow are sold by weight, so the quantity you buy is the quantity on the page. For soap makers and crafters, that is simpler and more repeatable than converting capsule counts. We ship discreetly in plain packaging, because privacy is part of how our customers like to buy.
If a supplier cannot tell you the fill weight, the material and the batch number behind a product, keep looking. We think every buyer should be able to get all three.
Kratomvia
Browse Kratomvia powders
Kratomvia’s Maeng Da line comes in four strains: Green Maeng Da, Red Maeng Da, White Maeng Da and Yellow Maeng Da, each from €14.90. Every batch is independently lab tested, and results are available by batch number.
You can see the full range on the Kratomvia store, or go straight to a color collection: green kratom, red kratom, white kratom or yellow kratom. Retailers and resellers can also ask about bulk orders.
Quick reference: choosing by what you need
| If you want to… | Use this |
|---|---|
| Compare two capsule products | Labeled mg per capsule times count, then price per gram |
| Convert grams to capsule count | Grams times 1,000, divided by mg per capsule |
| Repeat a craft or soap recipe exactly | Weigh powder on a scale and log the batch number |
| Verify a product’s testing | Match the batch number to a named lab report |
| Understand tablets or other formats | Our capsules versus tablets article |
FAQ
How many milligrams are in a kratom capsule?
There is no single answer, because shell size sets volume and the powder sets weight. At 0.6 g/mL, a size 00 holds about 546 mg and a size 0 about 408 mg. Many listings state 500 mg per capsule. Use the labeled fill weight on the product.
How many kratom capsules equal 1 gram?
Divide 1,000 mg by the labeled milligrams per capsule. At 500 mg per capsule it is 2 capsules. At 300 mg it is about 3.3 capsules. At 735 mg it is about 1.4.
How much is 5 grams of kratom?
Five grams is 5,000 mg. At 500 mg per capsule that equals 10 capsules, and at 408 mg it is about 12.3. The count changes with fill weight, so check the label.
Is a bigger capsule size always stronger?
A bigger shell holds more volume, but the contents depend on the material and density. A concentrated extract in a small shell is a different product from leaf powder in a large one. Compare the labeled milligrams and material, not the shell number.
What should a lab report show?
It should name the batch number, the independent laboratory, the test date and the purity results covered. Match the batch number on your package to the report before relying on it.
Sources
- Capsule Size: 00 vs 0 and What the Numbers Mean | NutraHow
- Capsule Sizes | Capsule Connection
- Capsule size chart, 000 to 5, with fill weights | Capsules.com
- Kratom Tablets vs Capsules | Natural Life
Recommended
- How Many Capsules Are in a Gram of Kratom? Capsule Sizes, Fill Weights
- Kratom Capsules vs Powder
- Start Safely: 0.5–1 g Kratom Dose for Beginners, Check Lab Reports
Disclaimer: This blog is intended for educational and informational purposes only. The content provided is not intended to promote, recommend, or suggest human consumption of kratom or any other product. Our products are sold exclusively for their intended purposes as described on our website. This information should not be interpreted as medical advice, and we encourage readers to consult qualified professionals for any health-related questions.
