Mass and Weight · Unit Converter

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

Convert stones (us) to tons (assay) (uk) instantly. 1 stone (us) = 173.5685087515 ton (assay) (uk) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Ton (assay) (UK) 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) (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.

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

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

1 st = 173.5685087515 AT
1 AT = 0.0057614138 st

To convert stones (us) to tons (assay) (uk), multiply the value in stones (us) by 173.5685087515. To reverse, multiply tons (assay) (uk) by 0.0057614138.

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 Stone (US) converter for the reverse direction.

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

  1. Write down the value in stones (us) (st).
  2. Multiply that value by the factor 173.5685087515.
  3. The product is the equivalent value in tons (assay) (uk) (AT).
  4. To reverse, multiply the ton (assay) (uk) value by 0.0057614138.

Worked examples

Example 1 — Convert 1 st to AT:
1 × 173.5685087515 = 173.5685087515 AT

Example 2 — Convert 100 st to AT:
100 × 173.5685087515 = 17356.8508751461 AT

Real-world example — Pet and accessory dimensions

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

3 st × 173.5685087515 = 520.7055262544 AT

Real-world example — Fabric and tailoring

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

1 st × 173.5685087515 = 173.5685087515 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) (uk). This is the most-used everyday length conversion in metric-using countries.

1.75 st × 173.5685087515 = 303.7448903151 AT

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

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

Stone (US) [st]Ton (assay) (UK) [AT]
0.011.7356850875
0.117.3568508751
1173.5685087515
2347.1370175029
3520.7055262544
4694.2740350058
5867.8425437573
101735.6850875146
203471.3701750292
305207.0552625438
406942.7403500584
508678.425437573
10017356.8508751461
50086784.2543757304
1000173568.5087514607

Frequently asked questions

How many tons (assay) (uk) is 1 stone (us)?
1 stone (us) equals 173.5685087515 ton (assay) (uk).
How do I convert stones (us) to tons (assay) (uk)?
Multiply the value in stones (us) by 173.5685087515 to get tons (assay) (uk).
How do I convert tons (assay) (uk) back to stones (us)?
Multiply the value in tons (assay) (uk) by 0.0057614138, or use the Ton (assay) (UK) to Stone (US) converter.
How many tons (assay) (uk) is 100 stones (us)?
100 stones (us) equals 17356.8508751461 tons (assay) (uk), because 100 × 173.5685087515 = 17356.8508751461.

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 = 173.5685087515 AT) verified against the following authoritative sources:

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