An avoirdupois dram is 1/16 ounce.
Drams to Carats Converter — dr to ct
Convert Dram (dr) to Carat (ct) using the exact conversion factor (1 dram = 8.859225977 carat). See the formula, worked examples, and conversion table.
Drams to Carats converter
Converter
Mass/Weight Converter
Convert SI mass, imperial weight, jewelry, atomic, and astronomy mass units.
Context values
Some unit families need one extra value for a physically accurate result.
A metric carat is exactly 200 milligrams.
Result = input x 0.001771845195 / 0.0002.
Mass uses the kilogram as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Drams to Carats
Weight conversions between Dram and Carat come up constantly in everyday commerce, shipping, and cooking, since US packaging is usually labeled in pounds while most of the rest of the world uses kilograms. Specifically: An avoirdupois dram is 1/16 ounce, and a metric carat is exactly 200 milligrams.
Formula
carats = drams × 8.85922597656
This factor comes from each unit's defined relationship to the category's base unit: 1 dram equals 0.00177184519531 base units, and 1 carat equals 0.0002 base units, so dividing one by the other gives the direct dram-to-carat factor of 8.85922597656.
Simple example
1 dr × 8.859225977 = 8.859225977 ct
1 dram = 8.859225977 carats.
Real-world example
50 dr × 8.859225977 = 442.9612988 ct
50 drams = 442.9612988 carats.
Conversion table
| Dram (dr) | Carat (ct) |
|---|---|
| 1 dr | 8.859225977 ct |
| 5 dr | 44.29612988 ct |
| 10 dr | 88.59225977 ct |
| 25 dr | 221.4806494 ct |
| 50 dr | 442.9612988 ct |
| 100 dr | 885.9225977 ct |
Reverse conversion: Carat to Dram
8.859225977 ct × 0.1128766782 = 1 dr
8.859225977 carats = 1 drams.
drams = carats × 0.112876678239
For a page dedicated to this direction, see Carat to Dram.
Understanding the Dram (dr)
An avoirdupois dram is 1/16 ounce.
Understanding the Carat (ct)
A metric carat is exactly 200 milligrams.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many carats are in 1 dram?
1 dram equals 8.859225977 carats, using the exact defined conversion factor rather than an estimate.
How do I convert dram to carat?
Multiply the dram value by 8.859225977. The converter above does this instantly to whatever precision you set.
How do I convert carat back to dram?
Use the reverse factor: 1 carat equals 0.1128766782 drams. You can also use the swap control in the converter above to flip the direction instantly.
What is a dram?
Dram (dr) is a unit of mass/weight.
What is a carat?
Carat (ct) is a unit of mass/weight.
Is the dram to carat conversion exact?
Yes. Both dram and carat are defined by fixed standards rather than physical artifacts, so the factor of 8.859225977 used above is exact to as many digits as you choose to display.