Convert Scruple (apothecary) to Wey
Convert scruples (apothecary) to weys instantly. 1 scruple (apothecary) = 1.133787e-5 wey — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Wey 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.
Wey
The wey was an English bulk weight, here taken as 252 pounds (about 114.3 kg).
From Old English 'waege', a weighing or balance.
Obsolete English unit for wool, cheese, and salt.
Used in medieval and early-modern English trade.
Scruple (apothecary) to Wey 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 scruples (apothecary) and weys:
To convert scruples (apothecary) to weys, multiply the value in scruples (apothecary) by 1.133787e-5. To reverse, multiply weys by 88200.
How to use this converter
Type a value into the calculator. The result in weys updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Wey to Scruple (apothecary) converter for the reverse direction.
Step-by-step: convert scruples (apothecary) to weys
- Write down the value in scruples (apothecary) (s ap).
- Multiply that value by the factor 1.133787e-5.
- The product is the equivalent value in weys (wey).
- To reverse, multiply the wey value by 88200.
Worked examples
Example 1 — Convert 1 s ap to wey:
1 × 1.133787e-5 = 1.133787e-5 wey
Example 2 — Convert 100 s ap to wey:
100 × 1.133787e-5 = 0.0011337868 wey
Real-world example — Ruler-scale measurements
A 30-scruple (apothecary) school ruler converts cleanly to weys — useful when buying a desk accessory from a retailer whose product specs use a different unit.
30 s ap × 1.133787e-5 = 0.0003401361 wey
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 weys daily when mixing metric and imperial tools.
10 s ap × 1.133787e-5 = 0.0001133787 wey
Real-world example — Postcard and small-object dimensions
A postcard is about 5 scruples (apothecary) wide. Converting to weys is essential for international postal addressing forms that ask for dimensions in different units across countries.
5 s ap × 1.133787e-5 = 5.668934e-5 wey
Scruple (apothecary) to Wey conversion table
Standard reference values for converting scruples (apothecary) to weys:
| Scruple (apothecary) [s ap] | Wey [wey] |
|---|---|
| 0.01 | 1.133787e-7 |
| 0.1 | 1.133787e-6 |
| 1 | 1.133787e-5 |
| 2 | 2.267574e-5 |
| 3 | 3.401361e-5 |
| 4 | 4.535147e-5 |
| 5 | 5.668934e-5 |
| 10 | 0.0001133787 |
| 20 | 0.0002267574 |
| 30 | 0.0003401361 |
| 40 | 0.0004535147 |
| 50 | 0.0005668934 |
| 100 | 0.0011337868 |
| 500 | 0.0056689342 |
| 1000 | 0.0113378685 |
Frequently asked questions
How many weys is 1 scruple (apothecary)?
How do I convert scruples (apothecary) to weys?
How do I convert weys back to scruples (apothecary)?
How many weys 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 = 1.133787e-5 wey) 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.