Grams to Carats
A gram is one thousandth of a kilogram, used for cooking ingredients and other small everyday objects. A carat is 200 milligrams, the standard unit for weighing gemstones and pearls worldwide. 1 g equals 5 ct, so converting between them is a matter of multiplying by that fixed factor — type any value into the converter below and both sides update instantly as you type.
Both units belong to mass, measured here against mass's base unit (kg) — every other mass unit on this site converts through that same reference point, which is why the table below can also be read as a quick cross-check against nearby values.
Formula
ct = g × 5
g = ct × 0.2
Worked example: 5 g × 5 = 25 ct.
Conversion table
| Gram (g) | Carat (ct) |
|---|---|
| 1 g | 5 ct |
| 2 g | 10 ct |
| 3 g | 15 ct |
| 5 g | 25 ct |
| 10 g | 50 ct |
| 20 g | 100 ct |
| 25 g | 125 ct |
| 50 g | 250 ct |
| 100 g | 500 ct |
| 250 g | 1,250 ct |
| 500 g | 2,500 ct |
| 1,000 g | 5,000 ct |
Frequently asked
- How many Carats in a gram?
- 1 g equals 5 ct.
- How do I convert Grams to Carats?
- Multiply the value in g by 5 to get ct. The converter above does this instantly as you type.
- Is the conversion exact?
- Yes — Gram and Carat are both defined by a fixed conversion factor to mass's base unit (kg), so the result shown is exact to the precision displayed, not an approximation.