Drop to Barrel (US) Converter
Unit Converter
Instant · Precise · Universal
47 units available
6 categories total
How to Convert Drop to Barrel (US)
To mL: multiply by 0.05 (approximate). To µL: multiply by 50. 20 drops ≈ 1 mL for aqueous solutions.
1 drop ≈ 0.05 mL = 50 µL ≈ 1/20 mL. Approximately 20 drops = 1 mL (for water-like liquids).
For example, 1 Drop (gtt) = 3.144905e-7 Barrel (US) (bbl (US)).
Drop to Barrel (US) — Common Values
| Drop (gtt) | Barrel (US) (bbl (US)) |
|---|---|
| 0.1 | 3.144905e-8 |
| 0.5 | 1.572453e-7 |
| 1 | 3.144905e-7 |
| 2 | 6.289811e-7 |
| 5 | 0.000001572452693 |
| 10 | 0.000003144905385 |
| 25 | 0.000007862263463 |
| 50 | 0.00001572452693 |
| 100 | 0.00003144905385 |
| 500 | 0.0001572452693 |
| 1000 | 0.0003144905385 |
About Drop (gtt)
Definition
The drop (medical/pharmacological) is an approximate unit of volume equal to about 0.05 milliliters, or 50 microliters.
Mathematical Relationship
1 drop ≈ 0.05 mL = 50 µL ≈ 1/20 mL. Approximately 20 drops = 1 mL (for water-like liquids).
Conversion Formula
To mL: multiply by 0.05 (approximate). To µL: multiply by 50. 20 drops ≈ 1 mL for aqueous solutions.
Practical Applications
Eye drop medication, ear drops, essential oil use, flavoring extracts in cooking, and IV drip rate measurement.
Interesting Facts
The size of a drop varies significantly: water drops from a glass dropper (~50 µL) differ from rain drops (~50,000–100,000 µL) by a factor of 1,000.
Common Mistakes
Assuming all drops are the same size — oily liquids produce larger drops than water. Always check the dropper calibration.
Educational Tips
20 drops ≈ 1 mL for water-based solutions. In IV therapy, standard drip sets deliver 10, 15, or 20 drops/mL depending on the design.
About Barrel (US) (bbl (US))
Definition
The US barrel is a unit of volume equal to 31.5 US gallons (about 119.24 liters), used for various liquid commodities.
Mathematical Relationship
1 US barrel = 31.5 US gal = 119.24 L = 0.11924 m³ = 4,032 US fl oz.
Conversion Formula
To liters: multiply by 119.24. To US gallons: multiply by 31.5. To UK barrels: multiply by 0.729.
Practical Applications
Brewery production volumes, whiskey barrel aging, wine production, and bulk liquid commodity trading.
Interesting Facts
A bourbon whiskey barrel is 53 gallons (200 L), larger than the standard US liquid barrel. Barrel sizes vary by commodity and country.
Common Mistakes
Confusing the US liquid barrel (31.5 gal) with the petroleum barrel (42 gal). Always specify which barrel type.
Educational Tips
There are several different 'barrel' sizes. US liquid = 31.5 gal, US oil = 42 gal, UK = 36 imperial gal. Always specify!