Convert Wey to Dram (avoirdupois)
Convert weys to drams (avoirdupois) instantly. 1 wey = 64511.9998293305 dram (avoirdupois) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Dram (avoirdupois) to Wey converter for the reverse conversion.
Units explained
Wey
The wey was an English bulk weight, here taken as 252 pounds (about 114.3 kg).
From Old English 'waege', a weighing or balance.
Obsolete English unit for wool, cheese, and salt.
Used in medieval and early-modern English trade.
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.
Wey to Dram (avoirdupois) conversion formula
Note: this conversion uses a generally accepted modern value. Historical and regional definitions of this unit varied across times and places.
The relationship between weys and drams (avoirdupois):
To convert weys to drams (avoirdupois), multiply the value in weys by 64511.9998293305. To reverse, multiply drams (avoirdupois) by 1.550099e-5.
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 Wey converter for the reverse direction.
Step-by-step: convert weys to drams (avoirdupois)
- Write down the value in weys (wey).
- Multiply that value by the factor 64511.9998293305.
- The product is the equivalent value in drams (avoirdupois) (dr).
- To reverse, multiply the dram (avoirdupois) value by 1.550099e-5.
Worked examples
Example 1 — Convert 1 wey to dr:
1 × 64511.9998293305 = 64511.9998293305 dr
Example 2 — Convert 100 wey to dr:
100 × 64511.9998293305 = 6451199.9829330463 dr
Wey to Dram (avoirdupois) conversion table
Standard reference values for converting weys to drams (avoirdupois):
| Wey [wey] | Dram (avoirdupois) [dr] |
|---|---|
| 0.01 | 645.1199982933 |
| 0.1 | 6451.199982933 |
| 1 | 64511.9998293305 |
| 2 | 129023.9996586609 |
| 3 | 193535.9994879914 |
| 4 | 258047.9993173218 |
| 5 | 322559.9991466523 |
| 10 | 645119.9982933046 |
| 20 | 1290239.9965866092 |
| 30 | 1935359.9948799137 |
| 40 | 2580479.9931732183 |
| 50 | 3225599.9914665231 |
| 100 | 6451199.9829330463 |
| 500 | 3.2256e+7 |
| 1000 | 6.4512e+7 |
Frequently asked questions
How many drams (avoirdupois) is 1 wey?
How do I convert weys to drams (avoirdupois)?
How do I convert drams (avoirdupois) back to weys?
How many drams (avoirdupois) is 100 weys?
Popular weight unit conversions
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Metric / SI (18 units)
Avoirdupois (14 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 wey = 64511.9998293305 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 Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.