Convert Liter to Drop
Convert liters to drops instantly. 1 liter = 20000 drop — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Drop to Liter converter for the reverse conversion.
Units explained
Liter
The liter is a metric unit of volume equal to one cubic decimeter (0.001 m³). It is the everyday metric volume unit.
Introduced in France in 1795; redefined in 1964 as exactly one cubic decimeter.
The world's common unit for beverages, fuel, and household liquids.
France, 1795; CGPM 1964.
Drop
A drop is a nominal small volume of about 0.05 mL; the exact size varies with the liquid and dropper.
Standardized loosely in pharmacy as roughly 1/20 of a milliliter (the metric drop).
Used for liquid medication and flavor dosing; treat as approximate.
Pharmacy convention.
Liter to Drop conversion formula
Note: this conversion uses a generally accepted modern value. Historical and regional definitions of this unit varied across times and places.
The relationship between liters and drops:
To convert liters to drops, multiply the value in liters by 20000. To reverse, multiply drops by 5e-5.
How to use this converter
Type a value into the calculator. The result in drops updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Drop to Liter converter for the reverse direction.
Step-by-step: convert liters to drops
- Write down the value in liters (L).
- Multiply that value by the factor 20000.
- The product is the equivalent value in drops (gtt).
- To reverse, multiply the drop value by 5e-5.
Worked examples
Example 1 — Convert 1 L to gtt:
1 × 20000 = 20000 gtt
Example 2 — Convert 100 L to gtt:
100 × 20000 = 2000000 gtt
Real-world example — Centimeter to wavelength scale
One liter equals 10 million drops. Physics curricula use this kind of conversion to relate everyday measurements to atomic and optical scales.
1 L × 20000 = 20000 gtt
Real-world example — Small-scale to atomic-scale
One liter equals 10 million drops — useful for physics curricula that relate everyday measurements to atomic and optical scales.
1 L × 20000 = 20000 gtt
Liter to Drop conversion table
Standard reference values for converting liters to drops:
| Liter [L] | Drop [gtt] |
|---|---|
| 0.01 | 200 |
| 0.1 | 2000 |
| 1 | 20000 |
| 2 | 40000 |
| 3 | 60000 |
| 4 | 80000 |
| 5 | 100000 |
| 10 | 200000 |
| 20 | 400000 |
| 30 | 600000 |
| 40 | 800000 |
| 50 | 1000000 |
| 100 | 2000000 |
| 500 | 1e+7 |
| 1000 | 2e+7 |
Frequently asked questions
How many drops is 1 liter?
How do I convert liters to drops?
How do I convert drops back to liters?
How many drops is 100 liters?
Popular volume unit conversions
Convert Liter to other volume units
Show all Liter conversions
Metric / SI (13 units)
US Customary (Liquid) (15 units)
US Customary (Dry) (5 units)
Imperial (UK) (14 units)
Cubic (length-derived) (4 units)
Cooking / Culinary (5 units)
Industrial / Specialized (6 units)
Sources & references
Conversion factor (1 L = 20000 gtt) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.