Capsule size guide
Size 0 empty capsules for bulk supply
Size 0 is a very common size for both supplements and pharmaceuticals, balancing useful capacity with easy swallowing. Many filling lines are set up for size 0 by default.
Size 0, drawn to scale (white cap, clear body).
Size 0 fill weight by powder density
| 0.4 g/mL | 0.6 g/mL | 0.8 g/mL | 1.0 g/mL | 1.2 g/mL |
|---|---|---|---|---|
| 272 mg | 408 mg | 544 mg | 680 mg | 816 mg |
Typical uses for size 0 capsules
- Everyday dietary supplements
- Pharmaceutical powder fills
- Probiotic and enzyme formulations
- Products moving down from size 00 for easier swallowing
Size 0 is often the best starting point when you are unsure: check whether your dose fits before moving up to 00.
Compare with neighbouring sizes
Size 0 capsules: questions
How much powder does a size 0 capsule hold?
A size 0 capsule has a typical volume of 0.68 mL. That is roughly 408 mg of powder at a tapped density of 0.6 g/mL, 544 mg at 0.8 g/mL and 680 mg at 1.0 g/mL. Actual fill weight depends on your blend and filling machine.
What are the dimensions of a size 0 capsule?
Typical closed length is 21.7 mm, with a cap diameter of 7.65 mm and a body diameter of 7.34 mm. Exact dimensions and tolerances are on the product specification sheet sent with your quote.
Which capsule types are available in size 0?
Capsules Hub supplies size 0 as: Gelatin capsules, HPMC (hypromellose) capsules, Enteric coated capsules. Custom colours and printing are available on request.
Can I buy size 0 capsules in small quantities?
No. Capsules Hub supplies empty capsules in bulk cartons only, to manufacturers who fill their own formulations.
Ready to source size 0 capsules? Tell us the material, colours and quantity and we will reply with bulk pricing and availability.
Request a bulk quote Open the capsule builder