Convert Tael to Dram (avoirdupois)
Convert taels to drams (avoirdupois) instantly. 1 tael = 21.3333309253 dram (avoirdupois) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Dram (avoirdupois) to Tael converter for the reverse conversion.
Units explained
Tael
The tael equals about 37.8 grams (ten mace).
From Malay 'tahil'; the Chinese unit is the 'liang'.
East Asian precious-metal and traditional-medicine commerce.
A long-standing East Asian trade weight, with regional variants.
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.
Tael 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 taels and drams (avoirdupois):
To convert taels to drams (avoirdupois), multiply the value in taels by 21.3333309253. To reverse, multiply drams (avoirdupois) by 0.0468750053.
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 Tael converter for the reverse direction.
Step-by-step: convert taels to drams (avoirdupois)
- Write down the value in taels (tael).
- Multiply that value by the factor 21.3333309253.
- The product is the equivalent value in drams (avoirdupois) (dr).
- To reverse, multiply the dram (avoirdupois) value by 0.0468750053.
Worked examples
Example 1 — Convert 1 tael to dr:
1 × 21.3333309253 = 21.3333309253 dr
Example 2 — Convert 100 tael to dr:
100 × 21.3333309253 = 2133.3330925298 dr
Real-world example — Hardware-scale dimensions
A 10-tael fastener or component is about as long as a thumbnail. Mechanics and DIY enthusiasts convert between taels and drams (avoirdupois) daily when mixing metric and imperial tools.
10 tael × 21.3333309253 = 213.333309253 dr
Real-world example — Postcard and small-object dimensions
A postcard is about 5 taels wide. Converting to drams (avoirdupois) is essential for international postal addressing forms that ask for dimensions in different units across countries.
5 tael × 21.3333309253 = 106.6666546265 dr
Real-world example — Ruler-scale measurements
A 30-tael school ruler converts cleanly to drams (avoirdupois) — useful when buying a desk accessory from a retailer whose product specs use a different unit.
30 tael × 21.3333309253 = 639.9999277589 dr
Tael to Dram (avoirdupois) conversion table
Standard reference values for converting taels to drams (avoirdupois):
| Tael [tael] | Dram (avoirdupois) [dr] |
|---|---|
| 0.01 | 0.2133333093 |
| 0.1 | 2.1333330925 |
| 1 | 21.3333309253 |
| 2 | 42.6666618506 |
| 3 | 63.9999927759 |
| 4 | 85.3333237012 |
| 5 | 106.6666546265 |
| 10 | 213.333309253 |
| 20 | 426.666618506 |
| 30 | 639.9999277589 |
| 40 | 853.3332370119 |
| 50 | 1066.6665462649 |
| 100 | 2133.3330925298 |
| 500 | 10666.6654626488 |
| 1000 | 21333.3309252975 |
Frequently asked questions
How many drams (avoirdupois) is 1 tael?
How do I convert taels to drams (avoirdupois)?
How do I convert drams (avoirdupois) back to taels?
How many drams (avoirdupois) is 100 taels?
Popular weight unit conversions
Convert Tael to other weight units
Show all Tael conversions
Metric / SI (18 units)
Avoirdupois (15 units)
Troy & Apothecary (9 units)
Indian / South Asian (6 units)
Scientific / Atomic (9 units)
Astronomical (4 units)
Biblical / Ancient (14 units)
Sources & references
Conversion factor (1 tael = 21.3333309253 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.