Convert 1 ct to ton

How to convert carats to US tons

1. Formula: US tons = carats × 2.204623e-7
2. Put in the value: 1 carat.
3. Result: 2.204623e-7 US tons.

Carats to US tons table

Converting the other way: US tons to carats

carats = US tons × 4,535,923.7. So 2.204623e-7 US tons is back to 1 carat; one US ton is 4,535,923.7 carats. See the US tons to carats table.

Quick estimate in your head

For a rough answer, multiply by about 2e-7: 1 × 2e-7 ≈ 2e-7 ton, against the exact 2.204623e-7 ton (9.3% out). Good enough to check that a calculated result is sensible.

Common mistakes

The usual slip is using the factor the wrong way round. A carat is smaller than a US ton, so the number of US tons must come out smaller than the number of carats. If your answer goes the other way, divide instead of multiplying.

About the units

Carat (ct) and US ton (ton) are both units of mass. One carat equals 2.204623e-7 US tons, and one US ton equals 4,535,923.7 carats. Results on this page are rounded for display; the conversion itself uses the exact definitions.

Mass conversions come up in cooking and baking, shipping and luggage limits, body weight, medicine doses and buying food by weight.

1 carat in other units

The most readable unit for this amount is carats (1).

• 200 mg
• 0.2 g
• 0.0002 kg
• 2e-7 t
• 0.00705479 oz
• 0.00044092 lb
• 0.00003149 st
• 2.204623e-7 ton

How this answer was calculated

The result is worked out from the numbers in this page's address when the page is opened, using exact arithmetic wherever possible and rounding only for display. Nothing is copied from a printed table. If you think an answer is wrong, please tell us through the contact page and we will check it.

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