Carats to US Tons (ct to ton) Converter

How to convert carats to US tons

Formulaton = ct × 2.204622622×10⁻⁷

Multiply the value in carats by 2.204622622×10⁻⁷. To go the other way, multiply by 4,535,923.7 (or divide by 2.204622622×10⁻⁷).

A carat is smaller than an US ton: it takes 4,535,923.7 carats to make one US ton.

Worked examples

1 carat1 ct × 2.204622622×10⁻⁷ = 2.204622622×10⁻⁷ ton
5 carats5 ct × 2.204622622×10⁻⁷ = 0.000001102311311 ton
10 carats10 ct × 2.204622622×10⁻⁷ = 0.000002204622622 ton
20 carats20 ct × 2.204622622×10⁻⁷ = 0.000004409245244 ton
100 carats100 ct × 2.204622622×10⁻⁷ = 0.00002204622622 ton

Carats to US tons conversion table

Values are calculated by the conversion engine and rounded to 8 significant figures.

Carats to US tons: 0.1–10 ct
Carats (ct)	US tons (ton)
0.1 ct	2.2046226×10⁻⁸ ton
0.25 ct	5.5115566×10⁻⁸ ton
0.5 ct	1.1023113×10⁻⁷ ton
1 ct	2.2046226×10⁻⁷ ton
2 ct	4.4092452×10⁻⁷ ton
3 ct	6.6138679×10⁻⁷ ton
4 ct	8.8184905×10⁻⁷ ton
5 ct	0.0000011023113 ton
6 ct	0.0000013227736 ton
7 ct	0.0000015432358 ton
8 ct	0.0000017636981 ton
9 ct	0.0000019841604 ton
10 ct	0.0000022046226 ton

Carats to US tons: 12–1,000 ct
Carats (ct)	US tons (ton)
12 ct	0.0000026455471 ton
15 ct	0.0000033069339 ton
20 ct	0.0000044092452 ton
25 ct	0.0000055115566 ton
30 ct	0.0000066138679 ton
40 ct	0.0000088184905 ton
50 ct	0.000011023113 ton
75 ct	0.00001653467 ton
100 ct	0.000022046226 ton
250 ct	0.000055115566 ton
500 ct	0.00011023113 ton
1,000 ct	0.00022046226 ton

About the units

Carat (ct)

The metric carat is exactly 200 mg and is used to weigh gemstones. (Karat, a gold-purity scale, is a different thing.) One carat equals 0.0002 kilograms (kg).

US ton (ton)

2,000 lb (907.18474 kg). The usual meaning of “ton” in the United States.

Frequently asked questions

How many US tons are in one carat?

There are 2.204622622×10⁻⁷ US tons in one carat, and this value is exact by definition.

How do I convert carats to US tons?

Multiply the number of carats by 2.204622622×10⁻⁷. For example, 10 ct × 2.204622622×10⁻⁷ = 0.000002204622622 ton.

How many carats are in one US ton?

One US ton equals 4,535,923.7 carats. That is the reverse factor, 1 ÷ 2.204622622×10⁻⁷.

What is 10 carats in US tons?

10 ct = 0.000002204622622 ton.

Is this ct to ton converter accurate?

Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.

Carats to US Tons Converter