Convert Gram to Dram (avoirdupois)
Convert grams to drams (avoirdupois) instantly. 1 gram = 0.5643833897 dram (avoirdupois) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Dram (avoirdupois) to Gram converter for the reverse conversion.
Units explained
Gram
The gram (g) equals one-thousandth of a kilogram.
From Late Latin 'gramma', a small weight or scruple.
The everyday metric unit for food, medicine, and small objects.
Defined in 1795 as the mass of one cubic centimeter of water at melting point.
Dram (avoirdupois)
The avoirdupois dram (dr) equals one-sixteenth of an ounce, about 1.77 grams.
From Greek 'drachma' through Latin 'dragma'.
Historically pharmacy; today occasional cooking and firearms (powder) use.
Defined as 1/256 of the avoirdupois pound.
Gram to Dram (avoirdupois) conversion formula
The relationship between grams and drams (avoirdupois):
To convert grams to drams (avoirdupois), multiply the value in grams by 0.5643833897. To reverse, multiply drams (avoirdupois) by 1.7718452.
How to use this converter
Type a value into the calculator. The result in drams (avoirdupois) updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Dram (avoirdupois) to Gram converter for the reverse direction.
Step-by-step: convert grams to drams (avoirdupois)
- Write down the value in grams (g).
- Multiply that value by the factor 0.5643833897.
- The product is the equivalent value in drams (avoirdupois) (dr).
- To reverse, multiply the dram (avoirdupois) value by 1.7718452.
Worked examples
Example 1 — Convert 1 g to dr:
1 × 0.5643833897 = 0.5643833897 dr
Example 2 — Convert 100 g to dr:
100 × 0.5643833897 = 56.43833897 dr
Real-world example — Ruler-scale measurements
A 30-gram school ruler converts cleanly to drams (avoirdupois) — useful when buying a desk accessory from a retailer whose product specs use a different unit.
30 g × 0.5643833897 = 16.931501691 dr
Real-world example — Hardware-scale dimensions
A 10-gram fastener or component is about as long as a thumbnail. Mechanics and DIY enthusiasts convert between grams and drams (avoirdupois) daily when mixing metric and imperial tools.
10 g × 0.5643833897 = 5.643833897 dr
Real-world example — Postcard and small-object dimensions
A postcard is about 5 grams wide. Converting to drams (avoirdupois) is essential for international postal addressing forms that ask for dimensions in different units across countries.
5 g × 0.5643833897 = 2.8219169485 dr
Gram to Dram (avoirdupois) conversion table
Standard reference values for converting grams to drams (avoirdupois):
| Gram [g] | Dram (avoirdupois) [dr] |
|---|---|
| 0.01 | 0.0056438339 |
| 0.1 | 0.056438339 |
| 1 | 0.5643833897 |
| 2 | 1.1287667794 |
| 3 | 1.6931501691 |
| 4 | 2.2575335588 |
| 5 | 2.8219169485 |
| 10 | 5.643833897 |
| 20 | 11.287667794 |
| 30 | 16.931501691 |
| 40 | 22.575335588 |
| 50 | 28.219169485 |
| 100 | 56.43833897 |
| 500 | 282.1916948501 |
| 1000 | 564.3833897002 |
Frequently asked questions
How many drams (avoirdupois) is 1 gram?
How do I convert grams to drams (avoirdupois)?
How do I convert drams (avoirdupois) back to grams?
How many drams (avoirdupois) is 100 grams?
Popular weight unit conversions
Convert Gram to other weight units
Show all Gram conversions
Metric / SI (17 units)
Avoirdupois (15 units)
Troy & Apothecary (10 units)
Indian / South Asian (6 units)
Scientific / Atomic (9 units)
Astronomical (4 units)
Biblical / Ancient (14 units)
Sources & references
Conversion factor (1 g = 0.5643833897 dr) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.