MM to Carat Conversion Calculator
Use this MM to Carat Conversion Calculator to estimate gemstone carat weight from millimeter size using different stone types and facet styles.
MM to Carat Conversion Calculator
Convert gemstone MM size into estimated carat weight
How to Use
- Select the gemstone type
- Select the facet style
- Enter gemstone size in millimeters
- Adjust depth percentage if needed
- Click Calculate to estimate carat weight
MM to Carat Conversion Calculator
The MM to Carat Conversion Calculator helps estimate gemstone carat weight using the stone size in millimeters. This tool is commonly used for diamonds, sapphires, rubies, emeralds, and other gemstones.
Since gemstones vary in density and cut style, this calculator uses gemstone-specific density and facet style factors to provide more accurate carat estimates.
What is Carat Weight?
Carat is the standard unit used to measure gemstone weight. One carat equals 200 milligrams.
Why Convert MM to Carat?
Gemstones are often measured visually in millimeters, while pricing is usually based on carat weight. This calculator helps estimate weight from physical dimensions.
Supported Gemstones
- Diamond
- Ruby
- Sapphire
- Emerald
- Topaz
- Quartz
- Tourmaline
- Garnet
Example MM to Carat Conversion
| MM Size | Approx Carat |
|---|---|
| 5 mm Diamond | ~0.50 ct |
| 6.5 mm Diamond | ~1.00 ct |
| 8 mm Sapphire | ~2.00 ct |
Benefits of Using This Calculator
- Instant gemstone weight estimation
- Supports multiple gemstones
- Different facet style options
- Useful for jewelers and buyers
- Mobile-friendly design
Final Thoughts
The MM to Carat Conversion Calculator makes gemstone weight estimation quick and easy. It is useful for jewelry buyers, gemstone collectors, traders, and jewelers who need approximate carat values based on gemstone dimensions.
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