Mass and Weight · Unit Converter

Convert Dram (avoirdupois) to Quarter (UK)

Convert drams (avoirdupois) to quarters (uk) instantly. 1 dram (avoirdupois) = 0.0001395089 quarter (uk) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Quarter (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

Quarter (UK)

What is a quarter (uk)?

The UK quarter equals one-fourth of a long hundredweight, 28 pounds (about 12.7 kg).

Origin of the quarter (uk)

A 'quarter' of the hundredweight in the British imperial system.

Where it is used

Historical British trade in coal, grain, and agricultural goods.

When and where it was developed

Defined within the imperial hundredweight system.

Dram (avoirdupois) to Quarter (UK) conversion formula

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

1 dr = 0.0001395089 qr
1 qr = 7167.9999810367 dr

To convert drams (avoirdupois) to quarters (uk), multiply the value in drams (avoirdupois) by 0.0001395089. To reverse, multiply quarters (uk) by 7167.9999810367.

How to use this converter

Type a value into the calculator. The result in quarters (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 Quarter (UK) to Dram (avoirdupois) converter for the reverse direction.

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

  1. Write down the value in drams (avoirdupois) (dr).
  2. Multiply that value by the factor 0.0001395089.
  3. The product is the equivalent value in quarters (uk) (qr).
  4. To reverse, multiply the quarter (uk) value by 7167.9999810367.

Worked examples

Example 1 — Convert 1 dr to qr:
1 × 0.0001395089 = 0.0001395089 qr

Example 2 — Convert 100 dr to qr:
100 × 0.0001395089 = 0.0139508929 qr

Real-world example — Ruler-scale measurements

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

30 dr × 0.0001395089 = 0.0041852679 qr

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 quarters (uk) daily when mixing metric and imperial tools.

10 dr × 0.0001395089 = 0.0013950893 qr

Real-world example — Postcard and small-object dimensions

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

5 dr × 0.0001395089 = 0.0006975446 qr

Dram (avoirdupois) to Quarter (UK) conversion table

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

Dram (avoirdupois) [dr]Quarter (UK) [qr]
0.011.395089e-6
0.11.395089e-5
10.0001395089
20.0002790179
30.0004185268
40.0005580357
50.0006975446
100.0013950893
200.0027901786
300.0041852679
400.0055803572
500.0069754464
1000.0139508929
5000.0697544645
10000.1395089289

Frequently asked questions

How many quarters (uk) is 1 dram (avoirdupois)?
1 dram (avoirdupois) equals 0.0001395089 quarter (uk).
How do I convert drams (avoirdupois) to quarters (uk)?
Multiply the value in drams (avoirdupois) by 0.0001395089 to get quarters (uk).
How do I convert quarters (uk) back to drams (avoirdupois)?
Multiply the value in quarters (uk) by 7167.9999810367, or use the Quarter (UK) to Dram (avoirdupois) converter.
How many quarters (uk) is 100 drams (avoirdupois)?
100 drams (avoirdupois) equals 0.0139508929 quarters (uk), because 100 × 0.0001395089 = 0.0139508929.

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 = 0.0001395089 qr) verified against the following authoritative sources:

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