Mass and Weight · Unit Converter

Convert Stone (US) to Ton (assay) (US)

Convert stones (us) to tons (assay) (us) instantly. 1 stone (us) = 194.3967077832 ton (assay) (us) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Ton (assay) (US) to Stone (US) 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

Stone (US)

What is a stone (us)?

A less common US definition of the stone, about 5.67 kilograms.

Origin of the stone (us)

A variant stone weight used in some historical US trade.

Where it is used

Rare; appears mainly in historical or specialized contexts.

When and where it was developed

Derived from older English stone weights that varied by commodity.

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.

Stone (US) to Ton (assay) (US) conversion formula

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

1 st = 194.3967077832 AT
1 AT = 0.00514412 st

To convert stones (us) to tons (assay) (us), multiply the value in stones (us) by 194.3967077832. To reverse, multiply tons (assay) (us) by 0.00514412.

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 Stone (US) converter for the reverse direction.

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

  1. Write down the value in stones (us) (st).
  2. Multiply that value by the factor 194.3967077832.
  3. The product is the equivalent value in tons (assay) (us) (AT).
  4. To reverse, multiply the ton (assay) (us) value by 0.00514412.

Worked examples

Example 1 — Convert 1 st to AT:
1 × 194.3967077832 = 194.3967077832 AT

Example 2 — Convert 100 st to AT:
100 × 194.3967077832 = 19439.6707783233 AT

Real-world example — Fabric and tailoring

One stone (us) of fabric converts to a value in tons (assay) (us) commonly used for seam allowances. Garment patterns frequently switch between the two units on a single instruction sheet.

1 st × 194.3967077832 = 194.3967077832 AT

Real-world example — Body height conversion (reverse direction)

You measure 1.75 stones (us) tall and need to fill in a gym membership form or medical record that asks for height in tons (assay) (us). This is the most-used everyday length conversion in metric-using countries.

1.75 st × 194.3967077832 = 340.1942386207 AT

Real-world example — Pet and accessory dimensions

A 3-stone (us) dog leash equals a tidy round value in tons (assay) (us). Pet-supply shopping frequently mixes the two units across product specifications.

3 st × 194.3967077832 = 583.1901233497 AT

Stone (US) to Ton (assay) (US) conversion table

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

Stone (US) [st]Ton (assay) (US) [AT]
0.011.9439670778
0.119.4396707783
1194.3967077832
2388.7934155665
3583.1901233497
4777.5868311329
5971.9835389162
101943.9670778323
203887.9341556647
305831.901233497
407775.8683113293
509719.8353891617
10019439.6707783233
50097198.3538916167
1000194396.7077832334

Frequently asked questions

How many tons (assay) (us) is 1 stone (us)?
1 stone (us) equals 194.3967077832 ton (assay) (us).
How do I convert stones (us) to tons (assay) (us)?
Multiply the value in stones (us) by 194.3967077832 to get tons (assay) (us).
How do I convert tons (assay) (us) back to stones (us)?
Multiply the value in tons (assay) (us) by 0.00514412, or use the Ton (assay) (US) to Stone (US) converter.
How many tons (assay) (us) is 100 stones (us)?
100 stones (us) equals 19439.6707783233 tons (assay) (us), because 100 × 194.3967077832 = 19439.6707783233.

Convert Stone (US) to other weight units

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

Sources & references

Conversion factor (1 st = 194.3967077832 AT) verified against the following authoritative sources:

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