Mass and Weight · Unit Converter

Convert Dram (avoirdupois) to Ton (assay) (UK)

Convert drams (avoirdupois) to tons (assay) (uk) instantly. 1 dram (avoirdupois) = 0.0542401591 ton (assay) (uk) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Ton (assay) (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.

Force / Engineering

Ton (assay) (UK)

What is a ton (assay) (uk)?

The assay ton (UK) equals about 32.667 grams, the long-ton analog of the assay ton.

Origin of the ton (assay) (uk)

The long-ton version of the assay-ton convenience unit.

Where it is used

Ore assaying in long-ton (imperial) contexts.

When and where it was developed

Adopted in assay laboratories using the long ton.

Dram (avoirdupois) to Ton (assay) (UK) conversion formula

The relationship between drams (avoirdupois) and tons (assay) (uk):

1 dr = 0.0542401591 AT
1 AT = 18.4365240824 dr

To convert drams (avoirdupois) to tons (assay) (uk), multiply the value in drams (avoirdupois) by 0.0542401591. To reverse, multiply tons (assay) (uk) by 18.4365240824.

How to use this converter

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

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

  1. Write down the value in drams (avoirdupois) (dr).
  2. Multiply that value by the factor 0.0542401591.
  3. The product is the equivalent value in tons (assay) (uk) (AT).
  4. To reverse, multiply the ton (assay) (uk) value by 18.4365240824.

Worked examples

Example 1 — Convert 1 dr to AT:
1 × 0.0542401591 = 0.0542401591 AT

Example 2 — Convert 100 dr to AT:
100 × 0.0542401591 = 5.4240159128 AT

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 tons (assay) (uk) daily when mixing metric and imperial tools.

10 dr × 0.0542401591 = 0.5424015913 AT

Real-world example — Postcard and small-object dimensions

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

5 dr × 0.0542401591 = 0.2712007956 AT

Real-world example — Ruler-scale measurements

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

30 dr × 0.0542401591 = 1.6272047738 AT

Dram (avoirdupois) to Ton (assay) (UK) conversion table

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

Dram (avoirdupois) [dr]Ton (assay) (UK) [AT]
0.010.0005424016
0.10.0054240159
10.0542401591
20.1084803183
30.1627204774
40.2169606365
50.2712007956
100.5424015913
201.0848031826
301.6272047738
402.1696063651
502.7120079564
1005.4240159128
50027.1200795642
100054.2401591283

Frequently asked questions

How many tons (assay) (uk) is 1 dram (avoirdupois)?
1 dram (avoirdupois) equals 0.0542401591 ton (assay) (uk).
How do I convert drams (avoirdupois) to tons (assay) (uk)?
Multiply the value in drams (avoirdupois) by 0.0542401591 to get tons (assay) (uk).
How do I convert tons (assay) (uk) back to drams (avoirdupois)?
Multiply the value in tons (assay) (uk) by 18.4365240824, or use the Ton (assay) (UK) to Dram (avoirdupois) converter.
How many tons (assay) (uk) is 100 drams (avoirdupois)?
100 drams (avoirdupois) equals 5.4240159128 tons (assay) (uk), because 100 × 0.0542401591 = 5.4240159128.

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 = 0.0542401591 AT) verified against the following authoritative sources:

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