Convert Scruple (apothecary) to Quarter (UK)
Convert scruples (apothecary) to quarters (uk) instantly. 1 scruple (apothecary) = 0.0001020408 quarter (uk) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Quarter (UK) to Scruple (apothecary) converter for the reverse conversion.
Units explained
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.
Quarter (UK)
The UK quarter equals one-fourth of a long hundredweight, 28 pounds (about 12.7 kg).
A 'quarter' of the hundredweight in the British imperial system.
Historical British trade in coal, grain, and agricultural goods.
Defined within the imperial hundredweight system.
Scruple (apothecary) to Quarter (UK) conversion formula
The relationship between scruples (apothecary) and quarters (uk):
To convert scruples (apothecary) to quarters (uk), multiply the value in scruples (apothecary) by 0.0001020408. To reverse, multiply quarters (uk) by 9800.
How to use this converter
Type a value into the calculator. The result in quarters (uk) updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Quarter (UK) to Scruple (apothecary) converter for the reverse direction.
Step-by-step: convert scruples (apothecary) to quarters (uk)
- Write down the value in scruples (apothecary) (s ap).
- Multiply that value by the factor 0.0001020408.
- The product is the equivalent value in quarters (uk) (qr).
- To reverse, multiply the quarter (uk) value by 9800.
Worked examples
Example 1 — Convert 1 s ap to qr:
1 × 0.0001020408 = 0.0001020408 qr
Example 2 — Convert 100 s ap to qr:
100 × 0.0001020408 = 0.0102040816 qr
Real-world example — Ruler-scale measurements
A 30-scruple (apothecary) school ruler converts cleanly to quarters (uk) — useful when buying a desk accessory from a retailer whose product specs use a different unit.
30 s ap × 0.0001020408 = 0.0030612245 qr
Real-world example — Hardware-scale dimensions
A 10-scruple (apothecary) fastener or component is about as long as a thumbnail. Mechanics and DIY enthusiasts convert between scruples (apothecary) and quarters (uk) daily when mixing metric and imperial tools.
10 s ap × 0.0001020408 = 0.0010204082 qr
Real-world example — Postcard and small-object dimensions
A postcard is about 5 scruples (apothecary) wide. Converting to quarters (uk) is essential for international postal addressing forms that ask for dimensions in different units across countries.
5 s ap × 0.0001020408 = 0.0005102041 qr
Scruple (apothecary) to Quarter (UK) conversion table
Standard reference values for converting scruples (apothecary) to quarters (uk):
| Scruple (apothecary) [s ap] | Quarter (UK) [qr] |
|---|---|
| 0.01 | 1.020408e-6 |
| 0.1 | 1.020408e-5 |
| 1 | 0.0001020408 |
| 2 | 0.0002040816 |
| 3 | 0.0003061224 |
| 4 | 0.0004081633 |
| 5 | 0.0005102041 |
| 10 | 0.0010204082 |
| 20 | 0.0020408163 |
| 30 | 0.0030612245 |
| 40 | 0.0040816327 |
| 50 | 0.0051020408 |
| 100 | 0.0102040816 |
| 500 | 0.0510204082 |
| 1000 | 0.1020408163 |
Frequently asked questions
How many quarters (uk) is 1 scruple (apothecary)?
How do I convert scruples (apothecary) to quarters (uk)?
How do I convert quarters (uk) back to scruples (apothecary)?
How many quarters (uk) is 100 scruples (apothecary)?
Popular weight unit conversions
Convert Scruple (apothecary) to other weight units
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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 s ap = 0.0001020408 qr) 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.