Mass and Weight · Unit Converter

Convert Dram (avoirdupois) to Hundredweight (UK)

Convert drams (avoirdupois) to hundredweights (uk) instantly. 1 dram (avoirdupois) = 3.487723e-5 hundredweight (uk) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Hundredweight (UK) to Dram (avoirdupois) converter for the reverse conversion.

Written by Sunith Babu L, Ph.D., Lead Engineer Reviewed by Dr. Ashok Kumar K, Ph.D.
Mass and Weight category 2 min read Published Last reviewed Updated

Units explained

Avoirdupois

Dram (avoirdupois)

What is a dram (avoirdupois)?

The avoirdupois dram (dr) equals one-sixteenth of an ounce, about 1.77 grams.

Origin of the dram (avoirdupois)

From Greek 'drachma' through Latin 'dragma'.

Where it is used

Historically pharmacy; today occasional cooking and firearms (powder) use.

When and where it was developed

Defined as 1/256 of the avoirdupois pound.

Avoirdupois

Hundredweight (UK)

What is a hundredweight (uk)?

The UK (long) hundredweight equals 112 pounds, about 50.8 kilograms.

Origin of the hundredweight (uk)

Originally a 'hundred'-pound trade weight, later fixed at 112 lb in Britain.

Where it is used

UK trade, shipping, and agriculture.

When and where it was developed

Standardized at 112 pounds in the imperial system.

Dram (avoirdupois) to Hundredweight (UK) conversion formula

The relationship between drams (avoirdupois) and hundredweights (uk):

1 dr = 3.487723e-5 cwt
1 cwt = 28671.9999241469 dr

To convert drams (avoirdupois) to hundredweights (uk), multiply the value in drams (avoirdupois) by 3.487723e-5. To reverse, multiply hundredweights (uk) by 28671.9999241469.

How to use this converter

Type a value into the calculator. The result in hundredweights (uk) updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Hundredweight (UK) to Dram (avoirdupois) converter for the reverse direction.

Step-by-step: convert drams (avoirdupois) to hundredweights (uk)

  1. Write down the value in drams (avoirdupois) (dr).
  2. Multiply that value by the factor 3.487723e-5.
  3. The product is the equivalent value in hundredweights (uk) (cwt).
  4. To reverse, multiply the hundredweight (uk) value by 28671.9999241469.

Worked examples

Example 1 — Convert 1 dr to cwt:
1 × 3.487723e-5 = 3.487723e-5 cwt

Example 2 — Convert 100 dr to cwt:
100 × 3.487723e-5 = 0.0034877232 cwt

Real-world example — Hardware-scale dimensions

A 10-dram (avoirdupois) fastener or component is about as long as a thumbnail. Mechanics and DIY enthusiasts convert between drams (avoirdupois) and hundredweights (uk) daily when mixing metric and imperial tools.

10 dr × 3.487723e-5 = 0.0003487723 cwt

Real-world example — Postcard and small-object dimensions

A postcard is about 5 drams (avoirdupois) wide. Converting to hundredweights (uk) is essential for international postal addressing forms that ask for dimensions in different units across countries.

5 dr × 3.487723e-5 = 0.0001743862 cwt

Real-world example — Ruler-scale measurements

A 30-dram (avoirdupois) school ruler converts cleanly to hundredweights (uk) — useful when buying a desk accessory from a retailer whose product specs use a different unit.

30 dr × 3.487723e-5 = 0.001046317 cwt

Dram (avoirdupois) to Hundredweight (UK) conversion table

Standard reference values for converting drams (avoirdupois) to hundredweights (uk):

Dram (avoirdupois) [dr]Hundredweight (UK) [cwt]
0.013.487723e-7
0.13.487723e-6
13.487723e-5
26.975446e-5
30.0001046317
40.0001395089
50.0001743862
100.0003487723
200.0006975446
300.001046317
400.0013950893
500.0017438616
1000.0034877232
5000.0174386161
10000.0348772322

Frequently asked questions

How many hundredweights (uk) is 1 dram (avoirdupois)?
1 dram (avoirdupois) equals 3.487723e-5 hundredweight (uk).
How do I convert drams (avoirdupois) to hundredweights (uk)?
Multiply the value in drams (avoirdupois) by 3.487723e-5 to get hundredweights (uk).
How do I convert hundredweights (uk) back to drams (avoirdupois)?
Multiply the value in hundredweights (uk) by 28671.9999241469, or use the Hundredweight (UK) to Dram (avoirdupois) converter.
How many hundredweights (uk) is 100 drams (avoirdupois)?
100 drams (avoirdupois) equals 0.0034877232 hundredweights (uk), because 100 × 3.487723e-5 = 0.0034877232.

Convert Dram (avoirdupois) to other weight units

Show all Dram (avoirdupois) conversions
Metric / SI (18 units)
Dram (avoirdupois) to Attogram (ag) Dram (avoirdupois) to Femtogram (fg) Dram (avoirdupois) to Picogram (pg) Dram (avoirdupois) to Nanogram (ng) Dram (avoirdupois) to Microgram (µg) Dram (avoirdupois) to Milligram (mg) Dram (avoirdupois) to Centigram (cg) Dram (avoirdupois) to Decigram (dg) Dram (avoirdupois) to Gram (g) Dram (avoirdupois) to Dekagram (dag) Dram (avoirdupois) to Hectogram (hg) Dram (avoirdupois) to Kilogram (kg) Dram (avoirdupois) to Quintal (metric) (q) Dram (avoirdupois) to Metric Ton (t) Dram (avoirdupois) to Gigagram (Gg) Dram (avoirdupois) to Teragram (Tg) Dram (avoirdupois) to Petagram (Pg) Dram (avoirdupois) to Exagram (Eg)
Avoirdupois (14 units)
Dram (avoirdupois) to Grain (gr) Dram (avoirdupois) to Ounce (oz) Dram (avoirdupois) to Pound (lb) Dram (avoirdupois) to Clove (clove) Dram (avoirdupois) to Stone (US) (st) Dram (avoirdupois) to Stone (UK) (st) Dram (avoirdupois) to Quarter (US) (qr) Dram (avoirdupois) to Quarter (UK) (qr) Dram (avoirdupois) to Hundredweight (US) (cwt) Dram (avoirdupois) to Hundredweight (UK) (cwt) Dram (avoirdupois) to Wey (wey) Dram (avoirdupois) to Kilopound (kip) (kip) Dram (avoirdupois) to Ton (short, US) (sh tn) Dram (avoirdupois) to Ton (long, UK) (long tn)
Troy & Apothecary (10 units)
Dram (avoirdupois) to Point (1/100 carat) (pt) Dram (avoirdupois) to Carat (metric) (ct) Dram (avoirdupois) to Scruple (apothecary) (s ap) Dram (avoirdupois) to Pennyweight (dwt) Dram (avoirdupois) to Momme (mom) Dram (avoirdupois) to Mace (mace) Dram (avoirdupois) to Dram (apothecary/troy) (dr ap) Dram (avoirdupois) to Troy Ounce (oz t) Dram (avoirdupois) to Tael (tael) Dram (avoirdupois) to Pound (troy/apothecary) (lb t)
Indian / South Asian (6 units)
Dram (avoirdupois) to Ratti (ratti) Dram (avoirdupois) to Masha (masha) Dram (avoirdupois) to Tola (tola) Dram (avoirdupois) to Chittack (Chatank) (chittack) Dram (avoirdupois) to Seer (Ser) (seer) Dram (avoirdupois) to Maund (Mann) (maund)
Scientific / Atomic (9 units)
Dram (avoirdupois) to Electron Mass (rest) (me) Dram (avoirdupois) to MeV/c2 (MeV/c²) Dram (avoirdupois) to Muon Mass (mµ) Dram (avoirdupois) to Atomic Mass Unit (u) Dram (avoirdupois) to Proton Mass (mp) Dram (avoirdupois) to Neutron Mass (mn) Dram (avoirdupois) to Deuteron Mass (md) Dram (avoirdupois) to Carbon-12 Atom Mass (C-12) Dram (avoirdupois) to Planck Mass (mP)
Astronomical (4 units)
Dram (avoirdupois) to Lunar Mass (Moon) (M☾) Dram (avoirdupois) to Earth's Mass (M⊕) Dram (avoirdupois) to Jupiter Mass (MJ) Dram (avoirdupois) to Sun's Mass (M☉)
Biblical / Ancient (14 units)
Dram (avoirdupois) to Lepton (Biblical Roman) (lepton) Dram (avoirdupois) to Quadrans (Biblical Roman) (quadrans) Dram (avoirdupois) to Assarion (Biblical Roman) (assarion) Dram (avoirdupois) to Gerah (Biblical Hebrew) (gerah) Dram (avoirdupois) to Drachma (Biblical Greek) (drachma) Dram (avoirdupois) to Denarius (Biblical Roman) (denarius) Dram (avoirdupois) to Bekan (Biblical Hebrew) (bekah) Dram (avoirdupois) to Didrachma (Biblical Greek) (didrachma) Dram (avoirdupois) to Shekel (Biblical Hebrew) (shekel) Dram (avoirdupois) to Tetradrachma (Biblical Greek) (tetra) Dram (avoirdupois) to Mina (Biblical Greek) (mina) Dram (avoirdupois) to Mina (Biblical Hebrew) (mina) Dram (avoirdupois) to Talent (Biblical Greek) (talent) Dram (avoirdupois) to Talent (Biblical Hebrew) (talent)
Force / Engineering (5 units)
Dram (avoirdupois) to Poundal (pdl) Dram (avoirdupois) to Ton (assay) (US) (AT) Dram (avoirdupois) to Ton (assay) (UK) (AT) Dram (avoirdupois) to Kilogram-force square second/meter (hyl) Dram (avoirdupois) to Slug (slug)

Sources & references

Conversion factor (1 dr = 3.487723e-5 cwt) verified against the following authoritative sources:

Results are provided for general reference. Verify critical measurements against an authoritative standard.