Convert Chittack (Chatank) to Dram (apothecary/troy)
Convert chittacks (chatank) to drams (apothecary/troy) instantly. 1 chittack (chatank) = 15.0000002572 dram (apothecary/troy) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Dram (apothecary/troy) to Chittack (Chatank) converter for the reverse conversion.
Units explained
Chittack (Chatank)
The chittack (chatank) equals one-sixteenth of a seer, about 58.3 grams.
A traditional South Asian unit in the seer-based system.
Historical grocery and provisions weighing in India and Bangladesh.
Part of the pre-metric South Asian weight system.
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.
Chittack (Chatank) 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 chittacks (chatank) and drams (apothecary/troy):
To convert chittacks (chatank) to drams (apothecary/troy), multiply the value in chittacks (chatank) by 15.0000002572. To reverse, multiply drams (apothecary/troy) by 0.0666666655.
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 Chittack (Chatank) converter for the reverse direction.
Step-by-step: convert chittacks (chatank) to drams (apothecary/troy)
- Write down the value in chittacks (chatank) (chittack).
- Multiply that value by the factor 15.0000002572.
- The product is the equivalent value in drams (apothecary/troy) (dr ap).
- To reverse, multiply the dram (apothecary/troy) value by 0.0666666655.
Worked examples
Example 1 — Convert 1 chittack to dr ap:
1 × 15.0000002572 = 15.0000002572 dr ap
Example 2 — Convert 100 chittack to dr ap:
100 × 15.0000002572 = 1500.0000257206 dr ap
Real-world example — Postcard and small-object dimensions
A postcard is about 5 chittacks (chatank) wide. Converting to drams (apothecary/troy) is essential for international postal addressing forms that ask for dimensions in different units across countries.
5 chittack × 15.0000002572 = 75.000001286 dr ap
Real-world example — Ruler-scale measurements
A 30-chittack (chatank) 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 chittack × 15.0000002572 = 450.0000077162 dr ap
Real-world example — Hardware-scale dimensions
A 10-chittack (chatank) fastener or component is about as long as a thumbnail. Mechanics and DIY enthusiasts convert between chittacks (chatank) and drams (apothecary/troy) daily when mixing metric and imperial tools.
10 chittack × 15.0000002572 = 150.0000025721 dr ap
Chittack (Chatank) to Dram (apothecary/troy) conversion table
Standard reference values for converting chittacks (chatank) to drams (apothecary/troy):
| Chittack (Chatank) [chittack] | Dram (apothecary/troy) [dr ap] |
|---|---|
| 0.01 | 0.1500000026 |
| 0.1 | 1.5000000257 |
| 1 | 15.0000002572 |
| 2 | 30.0000005144 |
| 3 | 45.0000007716 |
| 4 | 60.0000010288 |
| 5 | 75.000001286 |
| 10 | 150.0000025721 |
| 20 | 300.0000051441 |
| 30 | 450.0000077162 |
| 40 | 600.0000102882 |
| 50 | 750.0000128603 |
| 100 | 1500.0000257206 |
| 500 | 7500.000128603 |
| 1000 | 15000.000257206 |
Frequently asked questions
How many drams (apothecary/troy) is 1 chittack (chatank)?
How do I convert chittacks (chatank) to drams (apothecary/troy)?
How do I convert drams (apothecary/troy) back to chittacks (chatank)?
How many drams (apothecary/troy) is 100 chittacks (chatank)?
Popular weight unit conversions
Convert Chittack (Chatank) to other weight units
Show all Chittack (Chatank) conversions
Metric / SI (18 units)
Avoirdupois (15 units)
Troy & Apothecary (10 units)
Indian / South Asian (5 units)
Scientific / Atomic (9 units)
Astronomical (4 units)
Biblical / Ancient (14 units)
Sources & references
Conversion factor (1 chittack = 15.0000002572 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 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.