Convert carat (ct) to grain (gr).
MassOpen
Grain to Carat Converter (gr to ct)
Convert grain (gr) to carat (ct).Unit Converter · Mass
Quick answer
1 grain (gr) is approximately equal to 0.3239945 carats (ct). 1 carat (ct) is approximately equal to 3.086472 grains (gr).
To convert gr to ct, multiply the value in grains by 0.32399455. For example, 10 gr = 3.2399455 ct, and 100 gr = 32.399455 ct.
More in Mass
All Mass convertersConvert grain (gr) to kilogram (kg).
MassOpenConvert grain (gr) to gram (g).
MassOpenConvert grain (gr) to milligram (mg).
MassOpenConvert grain (gr) to pound (lb).
MassOpenConvert grain (gr) to ounce (oz).
MassOpenConvert grain (gr) to metric ton (t).
MassOpenConvert grain (gr) to microgram (µg).
MassOpenConvert grain (gr) to stone (st).
MassOpen
How to convert grains to carats
How many carats are in a grain? 1 grain is about 0.3239945 carats. This free gr to ct converter and grain to carat calculator gives the answer instantly for any value.
To convert grain (gr) to carat (ct), multiply the value in grains by 0.32399455.
ct = gr × 0.32399455
- 1
Take the value in grains
For example, 25 gr.
- 2
Multiply by 0.32399455
25 × 0.32399455.
- 3
Read the answer in carats
25 gr = 8.09986375 ct.
Grain to Carat conversion table
Common values from 1 to 1,000 grains converted to carats.
| Grain (gr) | Carat (ct) |
|---|---|
| 1 gr | 0.32399455 ct |
| 2 gr | 0.6479891 ct |
| 3 gr | 0.97198365 ct |
| 4 gr | 1.2959782 ct |
| 5 gr | 1.61997275 ct |
| 6 gr | 1.9439673 ct |
| 7 gr | 2.26796185 ct |
| 8 gr | 2.5919564 ct |
| 9 gr | 2.91595095 ct |
| 10 gr | 3.2399455 ct |
| 15 gr | 4.85991825 ct |
| 20 gr | 6.479891 ct |
| 25 gr | 8.09986375 ct |
| Grain (gr) | Carat (ct) |
|---|---|
| 30 gr | 9.7198365 ct |
| 40 gr | 12.959782 ct |
| 50 gr | 16.1997275 ct |
| 60 gr | 19.439673 ct |
| 70 gr | 22.6796185 ct |
| 75 gr | 24.29959125 ct |
| 80 gr | 25.919564 ct |
| 90 gr | 29.1595095 ct |
| 100 gr | 32.399455 ct |
| 250 gr | 80.9986375 ct |
| 500 gr | 161.997275 ct |
| 1,000 gr | 323.99455 ct |
About grains and carats
Grain (gr)
A grain (gr) is about 64.8 milligrams. It is used for ammunition, archery arrows and some older pharmacy measures.
Carat (ct)
A carat (ct) is exactly 200 milligrams (0.2 gram). It is the unit for the weight of diamonds and other gemstones, and is not the same as the karat that measures gold purity.
gr to ct: common questions
- How many carats are in 1 grain?
- 1 grain (gr) is approximately equal to 0.3239945 carats (ct). In short: 1 gr ≈ 0.3239945 ct.
- How do I convert grains to carats?
- To convert gr to ct, multiply the value in grains by 0.32399455. For example, 5 gr = 1.61997275 ct.
- How do I convert carats to grains?
- Use the Carat to Grain converter, which applies the exact reverse factor.
- What is 10 gr in ct, and what is 100 gr?
- 10 gr = 3.2399455 ct, and 100 gr = 32.399455 ct. The table above lists more values from 1 to 1,000.
- Is this gr to ct converter accurate?
- Yes. It uses the exact conversion factor and shows results to as many as 8 decimal places, so you can rely on it for study, work and everyday measuring.
Customize this calculator
Pick a look, copy the code, and this Grain to Carat calculator — with its inputs and results — runs on your own website.
Theme color
Match your brand's colors
Corner style
Sharp, soft or fully rounded
Widget width
Compact, standard or full width
Live preview
Full widthThe same inputs, result and chart as the calculator above, styled with your choices.
yoursite.com