Mass and Weight · Unit Converter

Convert Ton (long, UK) to Ton (assay) (US)

Convert tons (long, uk) to tons (assay) (us) instantly. 1 ton (long, uk) = 34835.8900347554 ton (assay) (us) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Ton (assay) (US) to Ton (long, UK) 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

Ton (long, UK)

What is a ton (long, uk)?

The long (UK) ton equals 2,240 pounds, about 1,016 kilograms.

Origin of the ton (long, uk)

The British imperial ton, equal to 20 long hundredweight.

Where it is used

UK shipping and historical heavy industry.

When and where it was developed

Standardized within the British imperial 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.

Ton (long, UK) to Ton (assay) (US) conversion formula

The relationship between tons (long, uk) and tons (assay) (us):

1 long tn = 34835.8900347554 AT
1 AT = 2.870603e-5 long tn

To convert tons (long, uk) to tons (assay) (us), multiply the value in tons (long, uk) by 34835.8900347554. To reverse, multiply tons (assay) (us) by 2.870603e-5.

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 Ton (long, UK) converter for the reverse direction.

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

  1. Write down the value in tons (long, uk) (long tn).
  2. Multiply that value by the factor 34835.8900347554.
  3. The product is the equivalent value in tons (assay) (us) (AT).
  4. To reverse, multiply the ton (assay) (us) value by 2.870603e-5.

Worked examples

Example 1 — Convert 1 long tn to AT:
1 × 34835.8900347554 = 34835.8900347554 AT

Example 2 — Convert 100 long tn to AT:
100 × 34835.8900347554 = 3483589.0034755422 AT

Real-world example — Geographic to architectural scale

One ton (long, uk) equals 100,000 tons (assay) (us). Map scales use this when an architectural site plan (in the smaller unit) must be related to road-network plans (in the larger unit) on the same drawing.

1 long tn × 34835.8900347554 = 34835.8900347554 AT

Real-world example — Geographic to architectural conversion

One ton (long, uk) equals 100,000 tons (assay) (us). The conversion bridges geographic-scale survey work and architectural-scale building plans on the same drawing.

1 long tn × 34835.8900347554 = 34835.8900347554 AT

Ton (long, UK) to Ton (assay) (US) conversion table

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

Ton (long, UK) [long tn]Ton (assay) (US) [AT]
0.01348.3589003476
0.13483.5890034755
134835.8900347554
269671.7800695108
3104507.6701042663
4139343.5601390217
5174179.4501737771
10348358.9003475542
20696717.8006951085
301045076.7010426627
401393435.601390217
501741794.5017377711
1003483589.0034755422
5001.741795e+7
10003.483589e+7

Frequently asked questions

How many tons (assay) (us) is 1 ton (long, uk)?
1 ton (long, uk) equals 34835.8900347554 ton (assay) (us).
How do I convert tons (long, uk) to tons (assay) (us)?
Multiply the value in tons (long, uk) by 34835.8900347554 to get tons (assay) (us).
How do I convert tons (assay) (us) back to tons (long, uk)?
Multiply the value in tons (assay) (us) by 2.870603e-5, or use the Ton (assay) (US) to Ton (long, UK) converter.
How many tons (assay) (us) is 100 tons (long, uk)?
100 tons (long, uk) equals 3483589.0034755422 tons (assay) (us), because 100 × 34835.8900347554 = 3483589.0034755422.

Convert Ton (long, UK) to other weight units

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

Sources & references

Conversion factor (1 long tn = 34835.8900347554 AT) verified against the following authoritative sources:

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