An avoirdupois dram is 1/16 ounce.
Drams to Grams Converter — dr to g
Convert Dram (dr) to Gram (g) using the exact conversion factor (1 dram = 1.771845195 gram). See the formula, worked examples, conversion table, history, and common uses.
Drams to Grams 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 gram is one thousandth of a kilogram.
Result = input x 0.001771845195 / 0.001.
Mass uses the kilogram as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Drams to Grams
Weight conversions between Dram and Gram 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 gram is one thousandth of a kilogram.
Formula
grams = drams × 1.77184519531
This factor comes from each unit's defined relationship to the category's base unit: 1 dram equals 0.00177184519531 base units, and 1 gram equals 0.001 base units, so dividing one by the other gives the direct dram-to-gram factor of 1.77184519531.
Simple example
1 dr × 1.771845195 = 1.771845195 g
1 dram = 1.771845195 grams.
Real-world example
50 dr × 1.771845195 = 88.59225977 g
50 drams = 88.59225977 grams.
Conversion table
| Dram (dr) | Gram (g) |
|---|---|
| 1 dr | 1.771845195 g |
| 5 dr | 8.859225977 g |
| 10 dr | 17.71845195 g |
| 25 dr | 44.29612988 g |
| 50 dr | 88.59225977 g |
| 100 dr | 177.1845195 g |
Reverse conversion: Gram to Dram
1.771845195 g × 0.5643833912 = 0.9999999998 dr
1.771845195 grams = 0.9999999998 drams.
drams = grams × 0.564383391193
For a page dedicated to this direction, see Gram to Dram.
Understanding the Dram (dr)
An avoirdupois dram is 1/16 ounce.
Understanding the Gram
Gram (g) measures mass. A gram is one-thousandth of a kilogram, the SI base unit of mass. It is classified as a SI derived (metric prefix) unit.
Where it's used: Standard small-mass unit worldwide
Uses of the Gram today
- Cooking and nutrition labeling worldwide (including in the US, alongside ounces)
- Precious metal and small-item weighing
- Scientific and laboratory measurement
History of the Gram
Originally defined in 1795 as the mass of one cubic centimeter of water, the gram follows directly from the kilogram (1/1000 of it) under the modern SI system, inheriting the kilogram's various historical and current definitions.
Historical origin. Gram was not the invention of a single named person; it developed through the process described above.
Gram — sources
- BIPM — The kilogram (SI base unit) — Basis for the gram as 1/1000 of the kilogram.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grams are in 1 dram?
1 dram equals 1.771845195 grams, using the exact defined conversion factor rather than an estimate.
How do I convert dram to gram?
Multiply the dram value by 1.771845195. The converter above does this instantly to whatever precision you set.
How do I convert gram back to dram?
Use the reverse factor: 1 gram equals 0.5643833912 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 gram?
Gram (g) measures mass. A gram is one-thousandth of a kilogram, the SI base unit of mass. It is classified as a SI derived (metric prefix) unit.
Is the dram to gram conversion exact?
Yes. Both dram and gram are defined by fixed standards rather than physical artifacts, so the factor of 1.771845195 used above is exact to as many digits as you choose to display.