Mass and Weight · Unit Converter

Convert Dram (avoirdupois) to Ton (short, US)

Convert drams (avoirdupois) to tons (short, us) instantly. 1 dram (avoirdupois) = 1.953125e-6 ton (short, us) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Ton (short, US) 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

Ton (short, US)

What is a ton (short, us)?

The short (US) ton equals 2,000 pounds, about 907 kilograms.

Origin of the ton (short, us)

The American ton, equal to 20 short hundredweight.

Where it is used

US industry, mining, and commodity output.

When and where it was developed

Standardized within US customary units.

Dram (avoirdupois) to Ton (short, US) conversion formula

The relationship between drams (avoirdupois) and tons (short, us):

1 dr = 1.953125e-6 sh tn
1 sh tn = 511999.9986454798 dr

To convert drams (avoirdupois) to tons (short, us), multiply the value in drams (avoirdupois) by 1.953125e-6. To reverse, multiply tons (short, us) by 511999.9986454798.

How to use this converter

Type a value into the calculator. The result in tons (short, us) 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 (short, US) to Dram (avoirdupois) converter for the reverse direction.

Step-by-step: convert drams (avoirdupois) to tons (short, us)

  1. Write down the value in drams (avoirdupois) (dr).
  2. Multiply that value by the factor 1.953125e-6.
  3. The product is the equivalent value in tons (short, us) (sh tn).
  4. To reverse, multiply the ton (short, us) value by 511999.9986454798.

Worked examples

Example 1 — Convert 1 dr to sh tn:
1 × 1.953125e-6 = 1.953125e-6 sh tn

Example 2 — Convert 100 dr to sh tn:
100 × 1.953125e-6 = 0.0001953125 sh tn

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 (short, us) daily when mixing metric and imperial tools.

10 dr × 1.953125e-6 = 1.953125e-5 sh tn

Real-world example — Postcard and small-object dimensions

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

5 dr × 1.953125e-6 = 9.765625e-6 sh tn

Real-world example — Ruler-scale measurements

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

30 dr × 1.953125e-6 = 5.859375e-5 sh tn

Dram (avoirdupois) to Ton (short, US) conversion table

Standard reference values for converting drams (avoirdupois) to tons (short, us):

Dram (avoirdupois) [dr]Ton (short, US) [sh tn]
0.011.953125e-8
0.11.953125e-7
11.953125e-6
23.90625e-6
35.859375e-6
47.8125e-6
59.765625e-6
101.953125e-5
203.90625e-5
305.859375e-5
407.8125e-5
509.765625e-5
1000.0001953125
5000.0009765625
10000.001953125

Frequently asked questions

How many tons (short, us) is 1 dram (avoirdupois)?
1 dram (avoirdupois) equals 1.953125e-6 ton (short, us).
How do I convert drams (avoirdupois) to tons (short, us)?
Multiply the value in drams (avoirdupois) by 1.953125e-6 to get tons (short, us).
How do I convert tons (short, us) back to drams (avoirdupois)?
Multiply the value in tons (short, us) by 511999.9986454798, or use the Ton (short, US) to Dram (avoirdupois) converter.
How many tons (short, us) is 100 drams (avoirdupois)?
100 drams (avoirdupois) equals 0.0001953125 tons (short, us), because 100 × 1.953125e-6 = 0.0001953125.

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 = 1.953125e-6 sh tn) verified against the following authoritative sources:

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