Pound to Dram Converter

Mass Converter

26 units available

Decimals:

From

To

256

1 lb = 256 dr

Formula:

dr = lb × 256

With your value: 1 lb = 256 dr

How big is that?

Everyday references on a logarithmic scale, all expressed in pound so you can sanity-check the result.

AA battery (1/19 your value)0.0529 lb

Can of soda (1/1.2 your value)0.860 lb

Your value1.00 lb

Bag of sugar (2.2× your value)2.20 lb

House cat (9.9× your value)9.92 lb

Adult human (1.5e+2× your value)154 lb

Other Pound to Dram conversions

2 lb to dr 3 lb to dr 4 lb to dr 5 lb to dr 6 lb to dr 7 lb to dr 8 lb to dr

Pound to Dram Conversion Table

Pound (lb)	Dram (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

Dram to Pound Conversion Table

Dram (dr)	Pound (lb)
0.5	0.001953
1	0.003906
2	0.007813
5	0.019531
10	0.039063
15	0.058594
20	0.078125
25	0.097656
50	0.195313
100	0.390625
250	0.976563
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.

Pound (lb)

Mass

Exact conversion

1 avoirdupois pound = 0.453 592 37 kg exactly (1959 international agreement).

Source: International Yard and Pound Agreement of 1959; NIST Federal Register Notice 59-5442

US, UK, Canada, Australia, New Zealand, South Africa · Reviewed 2026-07-01

Dram (dr)

Mass

Exact conversion

Traceable to the kilogram, defined by fixing the Planck constant at 6.626 070 15 × 10⁻³⁴ J·s. Avoirdupois masses derive from the 1959 international pound (0.453 592 37 kg exactly).

Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)

Bureau International des Poids et Mesures · Reviewed 2026-07-01

How to Convert Pound to Dram

To convert from Pound (lb) to Dram (dr), multiply the value by 256.

Formula: dr = lb × 256

Reverse: lb = dr × 0.00390625

Step-by-Step Example

Start with your value in Pound. For example: 5 lb
Multiply by the conversion factor: 5 x 256
The result is: 1,280 dr

About Pound

The pound (lb) is an imperial unit of mass equal to exactly 0.45359237 kilograms. It is the primary unit of weight in the United States.

Fun Fact: The abbreviation "lb" comes from the Latin "libra pondo" meaning "a pound by weight."

Common uses: body weight (US), food packaging, shipping.

About Dram

The dram (dr) is a unit of mass and weight. One dram equals 0.001771845195 kilograms. UnitConvertLab converts it against every other mass unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

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

Frequently Asked Questions

How many Dram are in 1 Pound?

There are exactly 256 Dram in 1 Pound. This means the conversion factor from Pound to Dram is 256.

What is the formula to convert Pound to Dram?

The formula to convert Pound to Dram is: dr = lb × 256. For example, to convert 10 Pound to Dram, you would multiply 10 by 256.

What is a Pound?