Understanding US Fluid Drams to Imperial Pints Conversion
The US fluid dram is the US fluid dram, a US customary liquid unit equal to 1/8 of a US fluid ounce, or about 3.6967 millilitres, historically used by apothecaries for small liquid doses. The Imperial Pint is the Imperial pint of 568.26125 millilitres, the classic British pint. Converting US Fluid Drams to Imperial Pints is useful for British pub measures and beverage volumes stated in Imperial pints, where a US apothecary dram must be expressed in the target measure.
Conversion Formula
To convert US Fluid Drams to Imperial Pints, multiply by this factor:
Step-by-Step Example
Convert 25 US Fluid Drams to Imperial Pints.
How to Convert US Fluid Drams to Imperial Pints
Use the fixed factor between the US fluid dram and the Imperial Pint to convert any quantity.
- Start with your value: Note the number of US Fluid Drams you want to convert.
- Apply the factor: Multiply that number by 0.00650527, the Imperial Pints in one US fluid dram.
- Read the result: The product is your volume in Imperial Pints.
- Worked result: For 25 US Fluid Drams, Imperial Pints.
US Fluid Drams to Imperial Pints conversion table
| US Fluid Drams (fl-dr) | Imperial Pints (imp-pnt) |
|---|---|
| 0 | 0 |
| 1 | 0.006505267 |
| 2 | 0.01301053 |
| 3 | 0.0195158 |
| 4 | 0.02602107 |
| 5 | 0.03252634 |
| 6 | 0.0390316 |
| 7 | 0.04553687 |
| 8 | 0.05204214 |
| 9 | 0.0585474 |
| 10 | 0.06505267 |
| 15 | 0.09757901 |
| 20 | 0.1301053 |
| 25 | 0.1626317 |
| 30 | 0.195158 |
| 40 | 0.2602107 |
| 50 | 0.3252634 |
| 60 | 0.390316 |
| 70 | 0.4553687 |
| 80 | 0.5204214 |
| 90 | 0.585474 |
| 100 | 0.6505267 |
| 150 | 0.9757901 |
| 200 | 1.301053 |
| 250 | 1.626317 |
| 300 | 1.95158 |
| 400 | 2.602107 |
| 500 | 3.252634 |
| 600 | 3.90316 |
| 700 | 4.553687 |
| 800 | 5.204214 |
| 900 | 5.85474 |
| 1000 | 6.505267 |
| 2000 | 13.01053 |
| 3000 | 19.5158 |
| 4000 | 26.02107 |
| 5000 | 32.52634 |
| 10000 | 65.05267 |
| 25000 | 162.6317 |
| 50000 | 325.2634 |
| 100000 | 650.5267 |
| 250000 | 1626.317 |
| 500000 | 3252.634 |
| 1000000 | 6505.267 |
Which pint do you mean?
“pint” means different units by region. This page uses the Imperial pint (UK). 1 US Fluid Drams in each:
| Definition | Result |
|---|---|
| US pint 473 mL | 0.0078125 pnt |
| Imperial pint (UK) 568 mL | 0.006505267 imp-pnt (this page) |
What is the US Fluid Dram?
The US fluid dram (also spelled fluid drachm) is a small United States customary unit of liquid volume, historically important in pharmacy and medicine for dispensing doses of liquid medication.
Definition
The US fluid dram is defined as one eighth of a US fluid ounce, or equivalently 60 minims.
Since the US fluid ounce is exactly 29.5735295625 mL, a fluid dram equals 3.6966912 mL. The UK/imperial fluid drachm is slightly larger at about 3.5516 mL (1/8 of the imperial fluid ounce).
Origin and History
"Dram" derives from the Greek drachma, an ancient coin and weight. The apothecaries' system split the fluid ounce into 8 fluid drams and each dram into 60 minims, giving pharmacists a fine graduation for compounding and measuring liquid remedies.
Law and Notable Facts
The fluid dram is a legal US customary unit but is now largely obsolete in clinical practice, superseded by milliliters. Its legacy survives in the term "dram" for a small pour of whisky and in the traditional 8-dram, 1-fluid-ounce medicine bottle.
Real-World Examples and Conversions
- A single US fluid dram is about 3.70 mL, roughly three-quarters of a metric teaspoon.
- 8 US fluid drams equal 1 US fluid ounce (29.5735 mL).
- 1 US fluid dram = 60 minims ≈ 0.75 teaspoon; 1 mL ≈ 0.2705 US fluid dram.
What is the Imperial Pint?
The Imperial pint is a unit of volume in the British imperial system, used mainly for measuring beverages such as beer, cider, and milk. It remains a familiar everyday measure in the United Kingdom and Ireland.
Definition
An Imperial pint is one-eighth of an Imperial gallon, or equivalently 20 Imperial fluid ounces. Since the Imperial gallon is defined as exactly 4.54609 litres, the pint follows directly:
That is, one Imperial pint equals exactly 4.54609 L ÷ 8 = 0.56826125 litres.
Origin and History
The pint descends from the Latin pincta (a painted mark on a vessel indicating a measure) and has existed in various local forms across medieval Europe. Britain standardised its liquid measures with the Weights and Measures Act of 1824, which defined the Imperial gallon and, with it, the modern Imperial pint. This replaced older wine, ale, and corn pints of differing sizes. It is notably larger than the US liquid pint of 473.176 mL.
Law and Notable Facts
The Imperial pint is a legally recognised unit in the United Kingdom, where draught beer and cider, and returnable milk containers, may still be sold by the pint despite general metrication. The UK "crown" pint stamp was long required on official pint glasses. Because it holds 20 fluid ounces versus the US pint's 16, an Imperial pint is about 20% larger than its American namesake.
Real-World Examples and Conversions
- A standard UK pint of beer contains 0.568261 litres, or about 568 mL.
- Doorstep milk in the UK is traditionally sold in one-pint (0.568 L) and two-pint (1.14 L) bottles.
- Two Imperial pints make one Imperial quart (1.13652 L), and eight pints make one Imperial gallon (4.54609 L).
- One Imperial pint equals roughly 1.20 US liquid pints (0.568261 L ÷ 0.473176 L).
Frequently Asked Questions
How many Imperial Pints are in one US fluid dram?
One US fluid dram equals 0.00650527 Imperial Pints, since a US fluid dram is about 3.6967 millilitres.
How do I convert US Fluid Drams to Imperial Pints?
Multiply the number of US Fluid Drams by 0.00650527 to get the equivalent value in Imperial Pints.
How many US Fluid Drams make up one Imperial Pint?
It takes about 153.722 US Fluid Drams to fill one Imperial Pint.
Where is this US Fluid Dram to Imperial Pint conversion used?
It is handy for British pub measures and beverage volumes stated in Imperial pints, where an old US apothecary dram needs restating.
Is the US fluid dram the same as the fluid ounce?
No. A US fluid dram is exactly one-eighth of a US fluid ounce, so eight drams make a single US fluid ounce.