There are various sizes of empty capsules, and common empty capsule sizes include the following:
Empty Gelatin Capsules - Size 00 - 1000 count

Empty Gelatin Capsules - Size 00 - 1000 count
  1. #00: Approx. 0.33" (8.5mm) in diameter and approximately 0.95" (24mm) in length.
  2. #0: Approx. 0.30" (7.6mm) in diameter and 0.87" (22mm) in length.
  3. #1: Approximately 0.26" (6.5mm) in diameter and approximately 0.75" (19mm) long.
  4. #2: Approx. 0.23" (5.8mm) in diameter and 0.67" (17mm) in length.
  5. #3: Approx. 0.21" (5.3mm) in diameter and 0.61" (15.5mm) in length.
  6. #4: Approximately 0.19" (4.9mm) in diameter and 0.55" (14mm) long.


These sizes are some common empty capsule sizes that can be used for making drug capsules or other uses. Note that different manufacturers may have slightly different size standards, so it is best to refer to the specific product specification sheet or check with the supplier when selecting empty capsules.