Common values
| Standard | Drops per mL | 20 drops | 1 mL equals |
|---|---|---|---|
| USP medical | 20 gtt/mL | 1.0 mL | 20 drops |
| Essential oil | 15 gtt/mL | 1.33 mL | 15 drops |
| IV macrodrip | 10 gtt/mL | 2.0 mL | 10 drops |
| IV microdrip | 60 gtt/mL | 0.33 mL | 60 drops |
Common questions
How many drops are in a milliliter?
It depends on the dropper. The USP medical standard is 20 drops per mL, but essential-oil droppers run about 15.
What is the difference between macrodrip and microdrip?
Macrodrip IV sets deliver 10 to 20 drops per mL for fast flow, while microdrip sets give 60 drops per mL for precise, slow dosing.