Carats to Grains Converter

1 carat (ct) equals 3.08647167059 grains (gr).

Quick answer

  • 1 carat = 3.086471671 grains
  • 1 grain = 0.32399455 carats
  • Formula: gr = ct × 3.08647167059

1 carat = 3.086471671 grains

How to convert carats to grains

gr = ct × 3.08647167059

To convert carats to grains, multiply the number of carats by 3.08647167059.

Example: 18 ct to gr

  1. Start with the value in carats: 18 ct.
  2. Multiply by 3.08647167059: 18 × 3.08647167059 = 55.55649007.
  3. Result: 18 carats = 55.55649007 grains.

Going the other way, 1 grain = 0.32399455 carats, so to convert grains back to carats you divide by the same number. See grains to carats.

Carats to grains conversion table

Carats (ct)Grains (gr)
0.25 ct 0.7716179176 gr
0.5 ct 1.543235835 gr
0.75 ct 2.314853753 gr
1 ct 3.086471671 gr
1.5 ct 4.629707506 gr
2 ct 6.172943341 gr
2.5 ct 7.716179176 gr
3 ct 9.259415012 gr
4 ct 12.34588668 gr
5 ct 15.43235835 gr
6 ct 18.51883002 gr
7 ct 21.60530169 gr
8 ct 24.69177336 gr
9 ct 27.77824504 gr
10 ct 30.86471671 gr
11 ct 33.95118838 gr
12 ct 37.03766005 gr
13 ct 40.12413172 gr
14 ct 43.21060339 gr
15 ct 46.29707506 gr
16 ct 49.38354673 gr
17 ct 52.4700184 gr
18 ct 55.55649007 gr
19 ct 58.64296174 gr
20 ct 61.72943341 gr
21 ct 64.81590508 gr
22 ct 67.90237675 gr
23 ct 70.98884842 gr
24 ct 74.07532009 gr
25 ct 77.16179176 gr
26 ct 80.24826344 gr
27 ct 83.33473511 gr
28 ct 86.42120678 gr
29 ct 89.50767845 gr
30 ct 92.59415012 gr
31 ct 95.68062179 gr
32 ct 98.76709346 gr
33 ct 101.8535651 gr
34 ct 104.9400368 gr
35 ct 108.0265085 gr

More ct to gr values

What is a carat?

The carat is the unit of mass for gemstones and pearls, equal to exactly 200 milligrams.

More about carats →

What is a grain?

The grain is the smallest unit in the avoirdupois, troy and apothecaries' systems, and it is the same in all three: exactly 64.79891 milligrams.

More about grains →

Convert carats to other units

Convert other units to grains

Frequently asked questions

How many grains are in a carat?

One carat is 3.086471671 grains.

How many carats are in a grain?

One grain is 0.32399455 carats.

What is the formula to convert carats to grains?

gr = ct × 3.08647167059.