Convert Tael to Dram (apothecary/troy)
Convert taels to drams (apothecary/troy) instantly. 1 tael = 9.7222211505 dram (apothecary/troy) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Dram (apothecary/troy) 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 (apothecary/troy)
The apothecary (troy) dram equals one-eighth of a troy ounce, about 3.888 grams.
From the apothecaries' system rooted in the Greek 'drachma'.
Historical pharmacy and medicine compounding.
Part of the apothecaries' system of weights used through the 19th century.
Tael to Dram (apothecary/troy) 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 (apothecary/troy):
To convert taels to drams (apothecary/troy), multiply the value in taels by 9.7222211505. To reverse, multiply drams (apothecary/troy) by 0.1028571542.
How to use this converter
Type a value into the calculator. The result in drams (apothecary/troy) 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 (apothecary/troy) to Tael converter for the reverse direction.
Step-by-step: convert taels to drams (apothecary/troy)
- Write down the value in taels (tael).
- Multiply that value by the factor 9.7222211505.
- The product is the equivalent value in drams (apothecary/troy) (dr ap).
- To reverse, multiply the dram (apothecary/troy) value by 0.1028571542.
Worked examples
Example 1 — Convert 1 tael to dr ap:
1 × 9.7222211505 = 9.7222211505 dr ap
Example 2 — Convert 100 tael to dr ap:
100 × 9.7222211505 = 972.2221150531 dr ap
Real-world example — Postcard and small-object dimensions
A postcard is about 5 taels wide. Converting to drams (apothecary/troy) is essential for international postal addressing forms that ask for dimensions in different units across countries.
5 tael × 9.7222211505 = 48.6111057527 dr ap
Real-world example — Ruler-scale measurements
A 30-tael school ruler converts cleanly to drams (apothecary/troy) — useful when buying a desk accessory from a retailer whose product specs use a different unit.
30 tael × 9.7222211505 = 291.6666345159 dr ap
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 (apothecary/troy) daily when mixing metric and imperial tools.
10 tael × 9.7222211505 = 97.2222115053 dr ap
Tael to Dram (apothecary/troy) conversion table
Standard reference values for converting taels to drams (apothecary/troy):
| Tael [tael] | Dram (apothecary/troy) [dr ap] |
|---|---|
| 0.01 | 0.0972222115 |
| 0.1 | 0.9722221151 |
| 1 | 9.7222211505 |
| 2 | 19.4444423011 |
| 3 | 29.1666634516 |
| 4 | 38.8888846021 |
| 5 | 48.6111057527 |
| 10 | 97.2222115053 |
| 20 | 194.4444230106 |
| 30 | 291.6666345159 |
| 40 | 388.8888460212 |
| 50 | 486.1110575265 |
| 100 | 972.2221150531 |
| 500 | 4861.1105752653 |
| 1000 | 9722.2211505307 |
Frequently asked questions
How many drams (apothecary/troy) is 1 tael?
How do I convert taels to drams (apothecary/troy)?
How do I convert drams (apothecary/troy) back to taels?
How many drams (apothecary/troy) 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 = 9.7222211505 dr ap) 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.