💧 Drops to mL Converter
Translate drops (gtt) to milliliters and back using standard or custom drop factors.
Drop volume can vary depending on the dropper or IV set. Choose a standard or enter your own drops-per-milliliter factor to convert accurately.
Common reference of 20 drops per mL.
Enter the number of drops you need to convert.
The equivalent liquid volume in milliliters.
Effective Drops per mL
20
Teaspoons
0.406 tsp
Tablespoons
0.135 Tbsp
How to Use This Calculator
Choose a drop calibration
Select a standard drop factor or enable the custom option if you have a calibration number.
Enter drops or milliliters
Provide the quantity you know. The paired field updates immediately using the selected factor.
Reference kitchen equivalents
Use the teaspoon and tablespoon outputs to prepare recipes or essential oil blends accurately.
Formula
mL = Drops ÷ (Drops per mL)
Drops = mL × (Drops per mL)
Drops per mL are determined by the dropper or infusion set. Always verify calibration when accuracy matters.
Use the formula breakdown to confirm the calculation logic or perform the conversion manually if needed.
Full Description
Drop size varies widely based on dropper tip diameter, fluid viscosity, and dispensing technique. Pharmacists, aromatherapists, and laboratory technicians rely on calibrated droppers or intravenous (IV) sets to ensure precise dosing. This converter lets you replicate those calibrations digitally.
By supporting both standard references and a custom input, the tool adapts to real-world equipment rather than assuming a single drop size. The updates happen instantly, so you can confirm dosing adjustments in seconds.
The teaspoon and tablespoon equivalents help bridge the gap between scientific measurements and everyday kitchen scales, especially when translating recipes or supplement preparations.
Frequently Asked Questions
What does gtt mean?
gtt is an abbreviation for guttae (Latin for drops). It is commonly used in medical prescriptions and infusion rate calculations.
Why do different droppers have different drop sizes?
Drop size depends on the dropper tip, fluid viscosity, surface tension, and user technique. Always calibrate your dropper if precise dosing is required.
How do I find my custom drops per mL?
Count how many drops it takes to reach 1 mL using your dropper. Divide the number of drops by the milliliters dispensed to get drops per mL.
Is this tool suitable for IV drips?
Yes. Select the macrodrip (15 gtt/mL) or microdrip (60 gtt/mL) options to calculate infusion volumes. Always double-check rates with clinical guidelines.