Printable Carat to Mm Chart
This sheet is for anyone comparing diamond sizes by carat weight. It is a 1-page letter landscape chart with carat to millimetres by shape. The columns are Carat, Round, Oval, Princess, Cushion, Emerald, Asscher, Radiant, Pear, Marquise, and Heart. The rows include 0.5 ct, 0.75 ct, and 1 ct, with sample measurements for each shape and a note that typical proportions vary.

Free printable · PDF
- 1 page
- US Letter, landscape — choose “Fit to page” for A4
- PDF, 50 KB
Free for personal, family and classroom use.
Use it to compare shapes side by side and check the approximate face-up size of a stone. Print it as a quick reference, or open the PDF/XLSX file when you need to compare carat weight with millimeter dimensions.
Good for
- Compare diamond shapes by face-up size
- Check approximate millimeters for common carat weights
- Reference sizes when shopping for loose stones
Tip: Print at actual size so the measurement rows and columns stay easy to read.
4 files · PDF, XLSX, DOCX
Get every sheet: Diamond Size Charts
This sheet plus 3 more in one download, with the editable Excel and Word files. Printable diamond carat size charts at actual size (round and fancy shapes), a carat-to-mm table, a four Cs comparison worksheet and a ring shopping checklist.
$3.00 USD, one-time 4 files · about $0.75 each
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