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Convert uns to carat

Here you can quickly calculate how many carat fit in one uns.
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  • 1 uns = 139.5 ct
  • 1 ct = 0.007168 uns

Example: uns to carat

  • 1 uns = 139.5 carat

Uns to carat conversion table

uns carat
1 139.5
2 279
5 697.5
10 1395
20 2790
50 6975
100 13950

Uns to carat formula

To convert uns to carat, multiply by 139.5.

1 uns = 139.5 ct
Example: 1 uns = 139.5 carat

Common mass conversion mistakes

  • The carat used for gemstones is a unit of mass: exactly 0.2 g, so a 5-carat diamond weighs 1 gram. The karat used for gold is something else entirely, a purity scale where 24k is pure gold and 18k is 75% gold. The two cannot be converted into each other.

Quick uns and carat conversion quiz

Score: 0

182 uns equals 38 100 carat.

Correct answer: 182 uns = 25 400 carat.

7.7 uns equals 1 070 carat.

Correct answer: 7.7 uns = 1 070 carat.

170 carat equals 2.44 uns.

Correct answer: 170 carat = 1.22 uns.

More mass conversions