Mass and Weight · Unit Converter

Convert Pennyweight to Ton (assay) (US)

Convert pennyweights to tons (assay) (us) instantly. 1 pennyweight = 0.0533202385 ton (assay) (us) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Ton (assay) (US) to Pennyweight 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

Troy & Apothecary

Pennyweight

What is a pennyweight?

The pennyweight (dwt) equals one-twentieth of a troy ounce, 24 grains (about 1.555 g).

Origin of the pennyweight

From the mass of a medieval English silver penny; symbol dwt from 'denarius weight'.

Where it is used

Jewelry making and precious-metal scrap valuation in the US.

When and where it was developed

Derived from the medieval English coinage system.

Force / Engineering

Ton (assay) (US)

What is a ton (assay) (us)?

The assay ton (US) equals about 29.167 grams, a mining-assay convenience unit.

Origin of the ton (assay) (us)

Devised so an assay sample's metal in milligrams reads as troy ounces per short ton.

Where it is used

Ore assaying and metallurgy.

When and where it was developed

Adopted in assay laboratories to simplify ore-grade calculation.

Pennyweight to Ton (assay) (US) conversion formula

The relationship between pennyweights and tons (assay) (us):

1 dwt = 0.0533202385 AT
1 AT = 18.7546047908 dwt

To convert pennyweights to tons (assay) (us), multiply the value in pennyweights by 0.0533202385. To reverse, multiply tons (assay) (us) by 18.7546047908.

How to use this converter

Type a value into the calculator. The result in tons (assay) (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 (assay) (US) to Pennyweight converter for the reverse direction.

Step-by-step: convert pennyweights to tons (assay) (us)

  1. Write down the value in pennyweights (dwt).
  2. Multiply that value by the factor 0.0533202385.
  3. The product is the equivalent value in tons (assay) (us) (AT).
  4. To reverse, multiply the ton (assay) (us) value by 18.7546047908.

Worked examples

Example 1 — Convert 1 dwt to AT:
1 × 0.0533202385 = 0.0533202385 AT

Example 2 — Convert 100 dwt to AT:
100 × 0.0533202385 = 5.3320238478 AT

Real-world example — Ruler-scale measurements

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

30 dwt × 0.0533202385 = 1.5996071543 AT

Real-world example — Hardware-scale dimensions

A 10-pennyweight fastener or component is about as long as a thumbnail. Mechanics and DIY enthusiasts convert between pennyweights and tons (assay) (us) daily when mixing metric and imperial tools.

10 dwt × 0.0533202385 = 0.5332023848 AT

Real-world example — Postcard and small-object dimensions

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

5 dwt × 0.0533202385 = 0.2666011924 AT

Pennyweight to Ton (assay) (US) conversion table

Standard reference values for converting pennyweights to tons (assay) (us):

Pennyweight [dwt]Ton (assay) (US) [AT]
0.010.0005332024
0.10.0053320238
10.0533202385
20.106640477
30.1599607154
40.2132809539
50.2666011924
100.5332023848
201.0664047696
301.5996071543
402.1328095391
502.6660119239
1005.3320238478
50026.6601192388
100053.3202384777

Frequently asked questions

How many tons (assay) (us) is 1 pennyweight?
1 pennyweight equals 0.0533202385 ton (assay) (us).
How do I convert pennyweights to tons (assay) (us)?
Multiply the value in pennyweights by 0.0533202385 to get tons (assay) (us).
How do I convert tons (assay) (us) back to pennyweights?
Multiply the value in tons (assay) (us) by 18.7546047908, or use the Ton (assay) (US) to Pennyweight converter.
How many tons (assay) (us) is 100 pennyweights?
100 pennyweights equals 5.3320238478 tons (assay) (us), because 100 × 0.0533202385 = 5.3320238478.

Convert Pennyweight to other weight units

Show all Pennyweight conversions
Metric / SI (18 units)
Pennyweight to Attogram (ag) Pennyweight to Femtogram (fg) Pennyweight to Picogram (pg) Pennyweight to Nanogram (ng) Pennyweight to Microgram (µg) Pennyweight to Milligram (mg) Pennyweight to Centigram (cg) Pennyweight to Decigram (dg) Pennyweight to Gram (g) Pennyweight to Dekagram (dag) Pennyweight to Hectogram (hg) Pennyweight to Kilogram (kg) Pennyweight to Quintal (metric) (q) Pennyweight to Metric Ton (t) Pennyweight to Gigagram (Gg) Pennyweight to Teragram (Tg) Pennyweight to Petagram (Pg) Pennyweight to Exagram (Eg)
Avoirdupois (15 units)
Pennyweight to Grain (gr) Pennyweight to Dram (avoirdupois) (dr) Pennyweight to Ounce (oz) Pennyweight to Pound (lb) Pennyweight to Clove (clove) Pennyweight to Stone (US) (st) Pennyweight to Stone (UK) (st) Pennyweight to Quarter (US) (qr) Pennyweight to Quarter (UK) (qr) Pennyweight to Hundredweight (US) (cwt) Pennyweight to Hundredweight (UK) (cwt) Pennyweight to Wey (wey) Pennyweight to Kilopound (kip) (kip) Pennyweight to Ton (short, US) (sh tn) Pennyweight to Ton (long, UK) (long tn)
Troy & Apothecary (9 units)
Pennyweight to Point (1/100 carat) (pt) Pennyweight to Carat (metric) (ct) Pennyweight to Scruple (apothecary) (s ap) Pennyweight to Momme (mom) Pennyweight to Mace (mace) Pennyweight to Dram (apothecary/troy) (dr ap) Pennyweight to Troy Ounce (oz t) Pennyweight to Tael (tael) Pennyweight to Pound (troy/apothecary) (lb t)
Indian / South Asian (6 units)
Pennyweight to Ratti (ratti) Pennyweight to Masha (masha) Pennyweight to Tola (tola) Pennyweight to Chittack (Chatank) (chittack) Pennyweight to Seer (Ser) (seer) Pennyweight to Maund (Mann) (maund)
Scientific / Atomic (9 units)
Pennyweight to Electron Mass (rest) (me) Pennyweight to MeV/c2 (MeV/c²) Pennyweight to Muon Mass (mµ) Pennyweight to Atomic Mass Unit (u) Pennyweight to Proton Mass (mp) Pennyweight to Neutron Mass (mn) Pennyweight to Deuteron Mass (md) Pennyweight to Carbon-12 Atom Mass (C-12) Pennyweight to Planck Mass (mP)
Astronomical (4 units)
Pennyweight to Lunar Mass (Moon) (M☾) Pennyweight to Earth's Mass (M⊕) Pennyweight to Jupiter Mass (MJ) Pennyweight to Sun's Mass (M☉)
Biblical / Ancient (14 units)
Pennyweight to Lepton (Biblical Roman) (lepton) Pennyweight to Quadrans (Biblical Roman) (quadrans) Pennyweight to Assarion (Biblical Roman) (assarion) Pennyweight to Gerah (Biblical Hebrew) (gerah) Pennyweight to Drachma (Biblical Greek) (drachma) Pennyweight to Denarius (Biblical Roman) (denarius) Pennyweight to Bekan (Biblical Hebrew) (bekah) Pennyweight to Didrachma (Biblical Greek) (didrachma) Pennyweight to Shekel (Biblical Hebrew) (shekel) Pennyweight to Tetradrachma (Biblical Greek) (tetra) Pennyweight to Mina (Biblical Greek) (mina) Pennyweight to Mina (Biblical Hebrew) (mina) Pennyweight to Talent (Biblical Greek) (talent) Pennyweight to Talent (Biblical Hebrew) (talent)
Force / Engineering (5 units)
Pennyweight to Poundal (pdl) Pennyweight to Ton (assay) (US) (AT) Pennyweight to Ton (assay) (UK) (AT) Pennyweight to Kilogram-force square second/meter (hyl) Pennyweight to Slug (slug)

Sources & references

Conversion factor (1 dwt = 0.0533202385 AT) verified against the following authoritative sources:

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