Convert Chittack (Chatank) to Scruple (apothecary)
Convert chittacks (chatank) to scruples (apothecary) instantly. 1 chittack (chatank) = 45.0000007716 scruple (apothecary) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Scruple (apothecary) 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.
Scruple (apothecary)
The apothecary scruple equals 20 grains, about 1.296 grams.
From Latin 'scrupulus', a small sharp pebble used as a tiny weight.
Historical apothecary dosing of powders.
Part of the apothecaries' system used through the 19th century.
Chittack (Chatank) to Scruple (apothecary) 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 scruples (apothecary):
To convert chittacks (chatank) to scruples (apothecary), multiply the value in chittacks (chatank) by 45.0000007716. To reverse, multiply scruples (apothecary) by 0.0222222218.
How to use this converter
Type a value into the calculator. The result in scruples (apothecary) updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Scruple (apothecary) to Chittack (Chatank) converter for the reverse direction.
Step-by-step: convert chittacks (chatank) to scruples (apothecary)
- Write down the value in chittacks (chatank) (chittack).
- Multiply that value by the factor 45.0000007716.
- The product is the equivalent value in scruples (apothecary) (s ap).
- To reverse, multiply the scruple (apothecary) value by 0.0222222218.
Worked examples
Example 1 — Convert 1 chittack to s ap:
1 × 45.0000007716 = 45.0000007716 s ap
Example 2 — Convert 100 chittack to s ap:
100 × 45.0000007716 = 4500.0000771618 s 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 scruples (apothecary) daily when mixing metric and imperial tools.
10 chittack × 45.0000007716 = 450.0000077162 s ap
Real-world example — Postcard and small-object dimensions
A postcard is about 5 chittacks (chatank) wide. Converting to scruples (apothecary) is essential for international postal addressing forms that ask for dimensions in different units across countries.
5 chittack × 45.0000007716 = 225.0000038581 s ap
Real-world example — Ruler-scale measurements
A 30-chittack (chatank) school ruler converts cleanly to scruples (apothecary) — useful when buying a desk accessory from a retailer whose product specs use a different unit.
30 chittack × 45.0000007716 = 1350.0000231485 s ap
Chittack (Chatank) to Scruple (apothecary) conversion table
Standard reference values for converting chittacks (chatank) to scruples (apothecary):
| Chittack (Chatank) [chittack] | Scruple (apothecary) [s ap] |
|---|---|
| 0.01 | 0.4500000077 |
| 0.1 | 4.5000000772 |
| 1 | 45.0000007716 |
| 2 | 90.0000015432 |
| 3 | 135.0000023149 |
| 4 | 180.0000030865 |
| 5 | 225.0000038581 |
| 10 | 450.0000077162 |
| 20 | 900.0000154324 |
| 30 | 1350.0000231485 |
| 40 | 1800.0000308647 |
| 50 | 2250.0000385809 |
| 100 | 4500.0000771618 |
| 500 | 22500.000385809 |
| 1000 | 45000.0007716179 |
Frequently asked questions
How many scruples (apothecary) is 1 chittack (chatank)?
How do I convert chittacks (chatank) to scruples (apothecary)?
How do I convert scruples (apothecary) back to chittacks (chatank)?
How many scruples (apothecary) 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 = 45.0000007716 s 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.