Build a custom capsule blend by choosing your herbs, capsule size and ratio. See the milligrams of each ingredient per capsule, account for powder density and calculate exactly what to weigh for the full batch.
Ratios are written largest part first. Divide the total fill weight by the total number of parts to get milligrams per part, then multiply out.
| Ratio | Total parts | mg per part | 1st ingredient | 2nd | 3rd |
|---|---|---|---|---|---|
| 1:1 | 2 | 237 | 237 | 237 | — |
| 2:1 | 3 | 158 | 316 | 158 | — |
| 3:1 | 4 | 118 | 354 | 118 | — |
| 1:1:1 | 3 | 158 | 158 | 158 | 158 |
| 2:1:1 | 4 | 118 | 236 | 118 | 118 |
| 3:2:1 | 6 | 79 | 237 | 158 | 79 |
| 2:2:1 | 5 | 95 | 190 | 190 | 95 |
| 4:2:1 | 7 | 67 | 268 | 134 | 67 |
How much a capsule actually holds depends on the density of the blend, not just its size. A blend of light leaf powders fills the same shell with far fewer milligrams than a dense mineral blend does.
| Size | Volume mL | 0.35 g/mL | 0.45 g/mL | 0.55 g/mL | 0.65 g/mL | 0.75 g/mL |
|---|---|---|---|---|---|---|
| 000 | 1.37 | 480 | 617 | 754 | 891 | 1028 |
| 00 | 0.95 | 333 | 428 | 523 | 618 | 713 |
| 0 | 0.68 | 238 | 306 | 374 | 442 | 510 |
| 1 | 0.5 | 175 | 225 | 275 | 325 | 375 |
| 2 | 0.37 | 130 | 167 | 204 | 241 | 278 |
| 3 | 0.3 | 105 | 135 | 165 | 195 | 225 |
| 4 | 0.21 | 74 | 95 | 116 | 137 | 158 |
| 5 | 0.13 | 46 | 59 | 72 | 85 | 98 |
These are the densities the calculator uses. Density is what makes a scoop of one powder weigh almost twice as much as the same scoop of another.
| Powder | Density g/mL | mg in a size 00 capsule | Weight of a 1 mL scoop |
|---|---|---|---|
| Ashwagandha Powder | 0.55 | 523 | 550 mg |
| Beet Root Powder | 0.55 | 523 | 550 mg |
| Ceylon Cinnamon Powder | 0.55 | 523 | 550 mg |
| Cordyceps Mushroom Powder | 0.5 | 475 | 500 mg |
| Lion's Mane Mushroom Powder | 0.58 | 551 | 580 mg |
| Magnesium Glycinate Powder | 0.6 | 570 | 600 mg |
| Moringa Leaf Powder | 0.35 | 333 | 350 mg |
| Spirulina Powder | 0.65 | 618 | 650 mg |
| Turmeric + Black Pepper Powder | 0.62 | 589 | 620 mg |
Add up the parts, divide the capsule's total fill weight by that number to get milligrams per part, then multiply by each ingredient's parts. The blend builder does this automatically using the density and capsule size you select.
No. Scoops measure volume, while milligrams measure weight. Powders with different densities can have very different weights in the same scoop volume, which is why the calculator has separate By scoop and By weight modes.
Multiply the milligrams of each ingredient per capsule by the number of capsules in the batch, then divide by 1,000 to convert to grams. The calculator gives you this weigh-out list automatically.
Because a capsule has a fixed volume rather than a fixed weight capacity. A denser blend weighs more than a lighter blend in the same capsule size.
Choose a size that can hold your target total dose at the expected density of the blend. If the formula does not fit, use a larger capsule, reduce the per-capsule dose or split the serving across more than one capsule.
Use the method that matches how you prepare the formula. Weight-based ratios are easier to reproduce accurately with a scale, while volume-based ratios can be used for scoop measurements as long as density differences are taken into account.
A capsule blend calculator helps you move from a simple ratio to the actual milligrams that fit inside each capsule. The important part is that capsule capacity is based on volume, while most supplement formulas are discussed in weight. Because powders have different densities, the same ratio can produce different milligram amounts depending on whether you measure ingredients by scoop or by weight.
Use the blend builder above to choose a capsule size, add your powders, set the parts and see the per-capsule dose and total batch weight automatically.
A blend ratio describes the relative share of each ingredient. A 2:1 blend has three total parts, with two parts of the first ingredient and one part of the second. A 2:1:1 blend has four total parts.
If the parts represent weight, divide the available total fill weight by the total number of parts, then multiply by each ingredient's parts. For example, if a capsule holds 600 mg of a 2:1 blend, each part represents 200 mg, giving 400 mg of the first ingredient and 200 mg of the second.
The Common blend ratios in milligrams table above gives a quick reference, while the interactive calculator accounts for the actual density of the powders you select.
This is one of the easiest mistakes to make when mixing capsule powders. A scoop measures volume. A scale measures weight. If two powders have different densities, one equal scoop of each does not contain equal milligrams.
When you choose By scoop, the blend builder treats the parts as equal volumes and calculates the resulting milligrams using each powder's density. When you choose By weight, the parts represent weight directly. Use the mode that matches how you are actually preparing the blend.
If accurate dosing matters, weighing powders with a suitable scale generally gives you more control than relying on visual scoop size alone.
A capsule has a fixed internal volume, not a fixed milligram capacity. A light leaf powder takes up more space per gram than a dense mineral powder, so the same shell can hold very different weights depending on the blend.
The Powder density reference table above shows the density values used by the calculator, and the How much a capsule holds by blend density table shows how strongly total fill weight can change across the same capsule sizes.
If you are choosing a shell before building the formula, start with the capsule size chart to compare sizes 000 to 5, volume and typical fill capacity.
Once the per-capsule milligrams are set, scaling the blend is straightforward. Multiply the milligrams of each ingredient by the number of capsules in the batch, then divide by 1,000 to convert milligrams to grams.
The blend builder does this automatically in the What to weigh out for your batch section, so you can move from a per-capsule formula to a practical weigh-out list without recalculating every ingredient manually.
If you already know how much powder you have and want to work in the opposite direction, use the capsule yield calculator to estimate how many capsules the powder should fill.
Multi-ingredient blends often need more room than a single powder because the total dose is spread across several ingredients. Start with the total milligrams you want per capsule, then compare that target with the expected blend density and available shell volume.
If the formula does not fit comfortably, you can move to a larger capsule, reduce the total per-capsule dose or split the serving across multiple capsules. Before ordering shells, compare your target with the capsule size chart and confirm that the selected size works with your filling setup.
You can browse empty capsules and bulk herbal powders once the formula is settled.
A useful capsule blend is more than a ratio written on paper. You need to know whether the parts represent weight or volume, how dense each powder is, how much the selected capsule can physically hold and how much of each ingredient you need for the full batch.
The blend builder brings those pieces together in one calculation. Once the formula is set, you can use the cost per capsule calculator to compare the economics of filling the blend yourself and the capsule yield calculator to plan your powder quantity.