Drops to Milliliters (mL) Converter
Use our free drops to mL converter to convert drops into milliliters (mL). Since drop size varies by dropper and liquid, this calculator lets you choose a drops-per-mL value (commonly 20 drops = 1 mL) for a more accurate conversion.
What is a Drops to mL Converter?
A drops to mL converter helps you convert a number of drops into milliliters (mL). This is useful for cooking, supplements, essential oils, lab work, and medication instructions where amounts are sometimes described in drops.
One important detail: a “drop” is not a fixed measurement. Drop size depends on the dropper tip, the liquid’s thickness (viscosity), temperature, and how the drop is formed. That’s why a drops per mL conversion can vary (for example, 15–30 drops per mL). Many people use a common approximation of 20 drops = 1 mL, especially for water-like liquids with a standard dropper.
Drops to mL Formula
To convert drops to milliliters, divide the number of drops by the drops-per-mL value you’re using (often 20 drops per 1 mL as a common estimate).
Common approximation: 20 drops per mL (water-like liquids). If you know your dropper’s rate, use that instead.
Use this when you want to convert 1 mL to drops or calculate drops for a specific mL amount.
A common estimate is 20 drops per 1 mL for water-like liquids, but your dropper may differ.
Using the 20 drops per mL estimate, 0.5 mL is about 10 drops.
How to Convert Drops to mL
- 1
Enter the number of drops you want to convert.
- 2
Choose your drops-per-mL rate (common default: 20 drops per mL).
- 3
Divide drops by drops-per-mL to get milliliters (mL).
- 4
Round to the precision you need (often 2–3 decimals).
Frequently Asked Questions
A common approximation is 20 drops = 1 mL for water-like liquids with a standard dropper, but it can vary (often 15–30 drops per mL).
Use: mL = drops ÷ (drops per mL). If you use the common estimate of 20 drops per mL, then mL = drops ÷ 20.
Use: drops = mL × (drops per mL). With the common estimate, 1 mL × 20 = 20 drops.
Drop size changes based on dropper tip size, liquid viscosity, temperature, and technique. That’s why “drops in mL” is usually an estimate unless you calibrate your dropper.
Using 20 drops per mL: 1 mL ≈ 20 drops, and 0.5 mL ≈ 10 drops. If your dropper rate is different, multiply by your drops-per-mL value.