Convert weight and mass units — kilograms, pounds, grams, ounces, tons, carats and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 ct | 2.000e-10 t | |
| 0.01 ct | 2e-09 t | |
| 0.1 ct | 2e-08 t | |
| 1 ct | 2e-07 t | |
| 5 ct | 1e-06 t | |
| 10 ct | 2e-06 t | |
| 50 ct | 1e-05 t | |
| 100 ct | 2e-05 t | |
| 1000 ct | 0.0002 t |
The Milligram (mg) and the Gram (g) are both units of weight & mass. Converting between them is straightforward using the formula above.
Formula: 1 ct = 2e-7 t
This converter uses internationally recognized conversion factors. All calculations are performed client-side in your browser — no data is sent to any server.
| Carat (ct) | Metric Ton (t) | Real-world context |
|---|---|---|
| 1 ct | 2.0000e-07 t | solitaire diamond |
| 1000 ct | 0.0002 t | |
| 1,000,000 ct | 0.2 t | |
| 1.0000e+09 ct | 200 t | |
| 1.0000e+12 ct | 200000 t |
1 carat (ct) equals exactly 2.0000e-07 metric tons (t). Use the formula: ct × 2.0000e-07 = t.
To convert carats to metric tons, multiply your value in carats by 2.0000e-07. For example, 5 ct × 2.0000e-07 = 1.0000e-06 t.
100 carats = 2.0000e-05 metric tons. Calculation: 100 × 2.0000e-07 = 2.0000e-05.
To convert metric tons back to carats, divide by 2.0000e-07 (or multiply by 5,000,000). Example: 10 t ÷ 2.0000e-07 = 50,000,000 ct.
Yes. This converter uses the internationally recognised exact conversion factor: 1 ct = 2.0000e-07 t. All calculations are performed in your browser with no rounding until display.
10 carats = 2.0000e-06 metric tons. Simply multiply by 2.0000e-07.
Converting carats to metric tons is commonly needed for jewellery valuation, gemstone trading, precious metal buying and selling, and hallmarking compliance where one system uses ct and another uses t.
The metric carat (ct) is the unit of mass used worldwide for gemstones and pearls, equal to exactly 200 milligrams (0.2 g). It is distinct from "karat" (K), the measure of gold purity (24K = 100% gold). A 1-carat diamond weighs exactly 0.2 g; the famous 45.52-carat Hope Diamond weighs approximately 9.1 g.
The metric ton (tonne, symbol t) equals exactly 1,000 kilograms or 1,000,000 grams. Not an SI unit but derived from the kilogram, it is used globally for large-scale measurements in shipping, agriculture, mining, and manufacturing. In the US, "metric ton" or "tonne" distinguishes it from the US short ton (2,000 lb ≈ 907 kg) and UK long ton (2,240 lb ≈ 1,016 kg).
The word "carat" derives from Greek keration (κεράτιον), meaning carob pod. Carob seeds were believed to have remarkably uniform weight and were used as counterweights for balancing precious stones. The carat value varied across countries (0.187–0.216 g) until the Fourth General Conference on Weights and Measures standardised the metric carat at exactly 200 mg in 1907. Most countries adopted the metric carat between 1914 and 1930.
Interesting fact: The largest gem-quality diamond ever found, the Cullinan Diamond (1905), weighed 3,106.75 carats (621.35 g) before being cut into 9 major and 96 minor stones, two of which are in the British Crown Jewels.
The tonne was introduced alongside the metric system in late 18th-century France and incorporated into the International System as an accepted non-SI unit. Its name (with final "e") was adopted to avoid confusion with British and American ton units. As international trade standardised on metric units through the 20th century, the metric ton became the global benchmark for commodity markets in grain, oil, steel, and other bulk goods.
Interesting fact: A standard ISO shipping container (20-foot TEU) can carry approximately 21–24 metric tons of cargo. The global annual steel production is about 1.9 billion metric tons — roughly 240 kg for every person on Earth.