Fluid Ounce (US) to Fluid Dram (UK) Converter

Volume Converter

40 units available

Decimals:

From

To

8.326745

1 fl oz = 8.326745 fl dr (UK)

Formula:

fl dr (UK) = fl oz × 8.3267454392

With your value: 1 fl oz = 8.32674544 fl dr (UK)

How big is that?

Everyday references on a logarithmic scale, all expressed in fluid ounce (us) so you can sanity-check the result.

Milk carton (1/30 your value)0.0338 fl oz

Kitchen bucket (1/3.0 your value)0.338 fl oz

Your value1.00 fl oz

Car fuel tank (1.7× your value)1.69 fl oz

Bathtub (6.8× your value)6.76 fl oz

Hot tub (51× your value)50.7 fl oz

Other Fluid Ounce (US) to Fluid Dram (UK) conversions

2 fl oz to fl dr (UK)3 fl oz to fl dr (UK)4 fl oz to fl dr (UK)5 fl oz to fl dr (UK)6 fl oz to fl dr (UK)7 fl oz to fl dr (UK)8 fl oz to fl dr (UK)

Fluid Ounce (US) to Fluid Dram (UK) Conversion Table

Fluid Ounce (US) (fl oz)	Fluid Dram (UK) (fl dr (UK))
0.5	4.163373
1	8.326745
2	16.653491
5	41.633727
10	83.267454
15	124.901182
20	166.534909
25	208.168636
50	416.337272
100	832.674544
250	2,081.68636
500	4,163.37272
1000	8,326.745439

Fluid Dram (UK) to Fluid Ounce (US) Conversion Table

Fluid Dram (UK) (fl dr (UK))	Fluid Ounce (US) (fl oz)
0.5	0.060047
1	0.120095
2	0.24019
5	0.600475
10	1.200949
15	1.801424
20	2.401899
25	3.002374
50	6.004747
100	12.009494
250	30.023735
500	60.04747
1000	120.094941

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Fluid Ounce (US) (fl oz)

Volume

Exact conversion

Derived from the cubic metre. The litre is exactly 10⁻³ m³; US and imperial capacity units are exact multiples fixed by statute.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

Fluid Dram (UK) (fl dr (UK))

Volume

Exact conversion

Derived from the cubic metre. The litre is exactly 10⁻³ m³; US and imperial capacity units are exact multiples fixed by statute.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

How to Convert Fluid Ounce (US) to Fluid Dram (UK)

To convert from Fluid Ounce (US) (fl oz) to Fluid Dram (UK) (fl dr (UK)), multiply the value by 8.3267454392.

Formula: fl dr (UK) = fl oz × 8.3267454392

Reverse: fl oz = fl dr (UK) × 0.1200949407

Step-by-Step Example

Start with your value in Fluid Ounce (US). For example: 5 fl oz
Multiply by the conversion factor: 5 x 8.3267454392
The result is: 41.633727 fl dr (UK)

About Fluid Ounce (US)

The US fluid ounce equals approximately 29.57 mL. It is commonly used for beverage and liquid measurements.

Common uses: beverages, cooking, cocktails.

About Fluid Dram (UK)

The fluid dram (uk) (fl dr (UK)) is a unit of volume and capacity. One fluid dram (uk) equals 0.00355163128 litres. UnitConvertLab converts it against every other volume unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: volume calculations, engineering and science, education.

Frequently Asked Questions

How many Fluid Dram (UK) are in 1 Fluid Ounce (US)?

There are exactly 8.3267454392 Fluid Dram (UK) in 1 Fluid Ounce (US). This means the conversion factor from Fluid Ounce (US) to Fluid Dram (UK) is 8.3267454392.

What is the formula to convert Fluid Ounce (US) to Fluid Dram (UK)?

The formula to convert Fluid Ounce (US) to Fluid Dram (UK) is: fl dr (UK) = fl oz × 8.3267454392. For example, to convert 10 Fluid Ounce (US) to Fluid Dram (UK), you would multiply 10 by 8.3267454392.

What is a Fluid Ounce (US)?