Understanding US Fluid Drams to Imperial Quarts 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 Quart is the Imperial quart of 1.1365225 litres (two Imperial pints). Converting US Fluid Drams to Imperial Quarts is useful for UK recipes and bottling figures expressed in Imperial quarts, where a US apothecary dram must be expressed in the target measure.
Conversion Formula
To convert US Fluid Drams to Imperial Quarts, multiply by this factor:
Step-by-Step Example
Convert 25 US Fluid Drams to Imperial Quarts.
How to Convert US Fluid Drams to Imperial Quarts
Use the fixed factor between the US fluid dram and the Imperial Quart 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 0.00325263, the Imperial Quarts in one US fluid dram.
- Read the result: The product is your volume in Imperial Quarts.
- Worked result: For 25 US Fluid Drams, Imperial Quarts.
US Fluid Drams to Imperial Quarts conversion table
| US Fluid Drams (fl-dr) | Imperial Quarts (imp-qt) |
|---|---|
| 0 | 0 |
| 1 | 0.003252634 |
| 2 | 0.006505267 |
| 3 | 0.009757901 |
| 4 | 0.01301053 |
| 5 | 0.01626317 |
| 6 | 0.0195158 |
| 7 | 0.02276843 |
| 8 | 0.02602107 |
| 9 | 0.0292737 |
| 10 | 0.03252634 |
| 15 | 0.0487895 |
| 20 | 0.06505267 |
| 25 | 0.08131584 |
| 30 | 0.09757901 |
| 40 | 0.1301053 |
| 50 | 0.1626317 |
| 60 | 0.195158 |
| 70 | 0.2276843 |
| 80 | 0.2602107 |
| 90 | 0.292737 |
| 100 | 0.3252634 |
| 150 | 0.487895 |
| 200 | 0.6505267 |
| 250 | 0.8131584 |
| 300 | 0.9757901 |
| 400 | 1.301053 |
| 500 | 1.626317 |
| 600 | 1.95158 |
| 700 | 2.276843 |
| 800 | 2.602107 |
| 900 | 2.92737 |
| 1000 | 3.252634 |
| 2000 | 6.505267 |
| 3000 | 9.757901 |
| 4000 | 13.01053 |
| 5000 | 16.26317 |
| 10000 | 32.52634 |
| 25000 | 81.31584 |
| 50000 | 162.6317 |
| 100000 | 325.2634 |
| 250000 | 813.1584 |
| 500000 | 1626.317 |
| 1000000 | 3252.634 |
Which quart do you mean?
“quart” means different units by region. This page uses the Imperial quart (UK). 1 US Fluid Drams in each:
| Definition | Result |
|---|---|
| US quart 946 mL | 0.00390625 qt |
| Imperial quart (UK) 1.137 L | 0.003252634 imp-qt (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 Quart?
The imperial quart is a unit of volume in the British imperial system, equal to one quarter of an imperial gallon. It is used in the United Kingdom and some Commonwealth countries for measuring liquids such as milk, beer, and oil.
Definition
An imperial quart is defined as exactly one quarter of an imperial gallon, or equivalently two imperial pints. Since the imperial gallon is exactly 4.54609 litres, the imperial quart follows directly:
Expressed exactly, one imperial quart equals 1.1365225 litres (1136.5225 mL), or 40 imperial fluid ounces.
Origin and History
The quart descends from the Latin quartus ("a fourth"), reflecting its status as a quarter of a gallon. Quarts existed in various English measures for centuries, but the modern imperial quart was fixed by the British Weights and Measures Act of 1824, which defined the imperial gallon and standardised the pint and quart that derive from it. This replaced the older, differing wine and ale gallons used previously.
Law and Notable Facts
The imperial quart remains a legal unit of measure in the United Kingdom, though metric units are now standard for most trade. It is notably larger than the US liquid quart: the imperial quart is about 1.1365 L while the US liquid quart is roughly 0.9464 L, making the imperial quart approximately 20% larger. This difference stems from the imperial and US systems adopting different gallon definitions.
Real-World Examples and Conversions
- One imperial quart of milk is about 1.137 litres, slightly more than a standard 1-litre carton.
- A recipe calling for 2 imperial quarts of stock needs roughly 2.273 litres.
- One imperial quart equals 40 imperial fluid ounces, versus 32 US fluid ounces in a US quart.
- Four imperial quarts make exactly one imperial gallon (4.54609 L).
Frequently Asked Questions
How many Imperial Quarts are in one US fluid dram?
One US fluid dram equals 0.00325263 Imperial Quarts, since a US fluid dram is about 3.6967 millilitres.
How do I convert US Fluid Drams to Imperial Quarts?
Multiply the number of US Fluid Drams by 0.00325263 to get the equivalent value in Imperial Quarts.
How many US Fluid Drams make up one Imperial Quart?
It takes about 307.443 US Fluid Drams to fill one Imperial Quart.
Where is this US Fluid Dram to Imperial Quart conversion used?
It is handy for UK recipes and bottling figures expressed in Imperial quarts, 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.