Carats to US tons

US tons = carats × 2.204623e-7

How to convert carats to US tons

One carat is 2.204623e-7 US tons, so multiply the number of carats by 2.204623e-7. For example, 20 carats is 20 × 2.204623e-7 = 0.00000441 US tons. To go back, divide by the same number, or multiply by 4,535,923.7.

Quick estimate

Multiplying by about 2e-7 gets within 9.3% of the exact answer, which is enough to check that a result makes sense.

Where it comes up

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

carats	US tons
1 ct	2.204623e-7 ton
2 ct	4.409245e-7 ton
3 ct	6.613868e-7 ton
4 ct	8.81849e-7 ton
5 ct	0.0000011 ton
6 ct	0.00000132 ton
7 ct	0.00000154 ton
8 ct	0.00000176 ton
9 ct	0.00000198 ton
10 ct	0.0000022 ton
11 ct	0.00000243 ton
12 ct	0.00000265 ton
13 ct	0.00000287 ton
14 ct	0.00000309 ton
15 ct	0.00000331 ton
16 ct	0.00000353 ton
17 ct	0.00000375 ton
18 ct	0.00000397 ton
19 ct	0.00000419 ton
20 ct	0.00000441 ton
25 ct	0.00000551 ton
30 ct	0.00000661 ton
40 ct	0.00000882 ton
50 ct	0.00001102 ton
60 ct	0.00001323 ton
70 ct	0.00001543 ton
75 ct	0.00001653 ton
80 ct	0.00001764 ton
90 ct	0.00001984 ton
100 ct	0.00002205 ton
120 ct	0.00002646 ton
150 ct	0.00003307 ton
200 ct	0.00004409 ton
250 ct	0.00005512 ton
300 ct	0.00006614 ton
400 ct	0.00008818 ton
500 ct	0.00011023 ton
750 ct	0.00016535 ton
1,000 ct	0.00022046 ton
1,500 ct	0.00033069 ton
2,000 ct	0.00044092 ton
5,000 ct	0.00110231 ton
10,000 ct	0.00220462 ton

Questions

How many US tons are in a carat?

2.204623e-7 US tons.

How do I convert carats to US tons in a spreadsheet?

Put the value in A1 and type =A1*2.204623e-7, then fill the formula down the column.

Are the values in the table exact?

They are calculated from the exact definitions of the units and rounded only for display. Open any row for the full working.