Mass and Weight · Unit Converter

Convert Ton (long, UK) to Carat (metric)

Convert tons (long, uk) to carats (metric) instantly. 1 ton (long, uk) = 5080234.5439999998 carat (metric) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Carat (metric) 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.

Troy & Apothecary

Carat (metric)

What is a carat (metric)?

The metric carat (ct) equals exactly 200 milligrams (0.0002 kg).

Origin of the carat (metric)

From Arabic 'qirat' and Greek 'keration', the carob seed once used as a counterweight.

Where it is used

The worldwide standard for gemstone and diamond mass.

When and where it was developed

The metric carat was fixed at 200 mg internationally in 1907.

Ton (long, UK) to Carat (metric) conversion formula

The relationship between tons (long, uk) and carats (metric):

1 long tn = 5080234.5439999998 ct
1 ct = 1.968413e-7 long tn

To convert tons (long, uk) to carats (metric), multiply the value in tons (long, uk) by 5080234.5439999998. To reverse, multiply carats (metric) by 1.968413e-7.

How to use this converter

Type a value into the calculator. The result in carats (metric) updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Carat (metric) to Ton (long, UK) converter for the reverse direction.

Step-by-step: convert tons (long, uk) to carats (metric)

  1. Write down the value in tons (long, uk) (long tn).
  2. Multiply that value by the factor 5080234.5439999998.
  3. The product is the equivalent value in carats (metric) (ct).
  4. To reverse, multiply the carat (metric) value by 1.968413e-7.

Worked examples

Example 1 — Convert 1 long tn to ct:
1 × 5080234.5439999998 = 5080234.5439999998 ct

Example 2 — Convert 100 long tn to ct:
100 × 5080234.5439999998 = 5.080235e+8 ct

Real-world example — Geographic to fiber-optic scale

One ton (long, uk) equals one billion carats (metric). This conversion appears in fiber-optic specifications, where total link length is given in tons (long, uk) but signal attenuation depends on micro-scale variations along the fiber.

1 long tn × 5080234.5439999998 = 5080234.5439999998 ct

Real-world example — Long-haul to feature-scale

One ton (long, uk) equals one billion carats (metric) — useful in fiber-optic engineering, where total cable length is given in the larger unit but feature-level attenuation depends on micro-scale variations.

1 long tn × 5080234.5439999998 = 5080234.5439999998 ct

Ton (long, UK) to Carat (metric) conversion table

Standard reference values for converting tons (long, uk) to carats (metric):

Ton (long, UK) [long tn]Carat (metric) [ct]
0.0150802.34544
0.1508023.4544
15080234.5439999998
21.016047e+7
31.52407e+7
42.032094e+7
52.540117e+7
105.080235e+7
201.016047e+8
301.52407e+8
402.032094e+8
502.540117e+8
1005.080235e+8
5002.540117e+9
10005.080235e+9

Frequently asked questions

How many carats (metric) is 1 ton (long, uk)?
1 ton (long, uk) equals 5080234.5439999998 carat (metric).
How do I convert tons (long, uk) to carats (metric)?
Multiply the value in tons (long, uk) by 5080234.5439999998 to get carats (metric).
How do I convert carats (metric) back to tons (long, uk)?
Multiply the value in carats (metric) by 1.968413e-7, or use the Carat (metric) to Ton (long, UK) converter.
How many carats (metric) is 100 tons (long, uk)?
100 tons (long, uk) equals 5.080235e+8 carats (metric), because 100 × 5080234.5439999998 = 5.080235e+8.

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 = 5080234.5439999998 ct) verified against the following authoritative sources:

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