Quart (US) to Fluid Dram (US) Converter

Volume Converter

40 units available

Decimals:

From

To

256

1 qt = 256 fl dr

Formula:

fl dr = qt × 256.0000000009

With your value: 1 qt = 256 fl dr

How big is that?

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

Milk carton (1/9.5e+2 your value)0.00106 qt

Kitchen bucket (1/95 your value)0.0106 qt

Car fuel tank (1/19 your value)0.0528 qt

Bathtub (1/4.7 your value)0.211 qt

Your value1.00 qt

Hot tub (1.6× your value)1.59 qt

Other Quart (US) to Fluid Dram (US) conversions

2 qt to fl dr 3 qt to fl dr 4 qt to fl dr 5 qt to fl dr 6 qt to fl dr 7 qt to fl dr 8 qt to fl dr

Quart (US) to Fluid Dram (US) Conversion Table

Quart (US) (qt)	Fluid Dram (US) (fl dr)
0.5	128
1	256
2	512
5	1,280
10	2,560
15	3,840
20	5,120
25	6,400
50	12,800
100	25,600
250	64,000
500	128,000
1000	256,000.000001

Fluid Dram (US) to Quart (US) Conversion Table

Fluid Dram (US) (fl dr)	Quart (US) (qt)
0.5	0.001953
1	0.003906
2	0.007812
5	0.019531
10	0.039062
15	0.058594
20	0.078125
25	0.097656
50	0.195312
100	0.390625
250	0.976562
500	1.953125
1000	3.90625

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.

Quart (US) (qt)

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 (US) (fl dr)

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 Quart (US) to Fluid Dram (US)

To convert from Quart (US) (qt) to Fluid Dram (US) (fl dr), multiply the value by 256.0000000009.

Formula: fl dr = qt × 256.0000000009

Reverse: qt = fl dr × 0.00390625

Step-by-Step Example

Start with your value in Quart (US). For example: 5 qt
Multiply by the conversion factor: 5 x 256.0000000009
The result is: 1,280 fl dr

About Quart (US)

The quart (us) (qt) is a unit of volume and capacity. One quart (us) equals 0.946352946 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.

About Fluid Dram (US)

The fluid dram (us) (fl dr) is a unit of volume and capacity. One fluid dram (us) equals 0.003696691195 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 (US) are in 1 Quart (US)?

There are exactly 256.0000000009 Fluid Dram (US) in 1 Quart (US). This means the conversion factor from Quart (US) to Fluid Dram (US) is 256.0000000009.

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

The formula to convert Quart (US) to Fluid Dram (US) is: fl dr = qt × 256.0000000009. For example, to convert 10 Quart (US) to Fluid Dram (US), you would multiply 10 by 256.0000000009.

What is a Quart (US)?