At One Place

Grams to carats

1 gram in carats
1 g = 5 ct
ct = g × 5

To convert grams to carats, multiply by 5. The table below gives the values people look up most often, and the converter works for any number.

Grams to carats table

Common gram values converted to carats.
Grams Carats
1 g 5
2 g 10
3 g 15
4 g 20
5 g 25
10 g 50
15 g 75
20 g 100
25 g 125
30 g 150
40 g 200
50 g 250
75 g 375
100 g 500
250 g 1,250
500 g 2,500
1,000 g 5,000

How the conversion works

The relationship is ct = g × 5. Both units measure mass, so the conversion is a fixed factor that never changes.

Common questions

How many carats are in one gram?
One gram equals 5 carats. ct = g × 5.
How do you convert grams to carats?
Use ct = g × 5. So 10 g is 50 ct.
How many grams are in one carat?
One carat equals 0.2 grams, which is the reverse of the conversion above.

Related pages

Sources

  1. Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
  2. The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
  3. Calculated on this page — At One Place

How these figures are compiled and checked