Convert Scruple (apothecary) to Seer (Ser)
Convert scruples (apothecary) to seers (ser) instantly. 1 scruple (apothecary) = 0.0013888889 seer (ser) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Seer (Ser) 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.
Seer (Ser)
The seer (ser) equals about 933 grams, or eighty tola (close to one kilogram).
From Hindi/Urdu 'ser', a major pre-metric trade weight.
Historical grain, milk, and produce trade across South Asia.
Standardized in British India; aligned near 1 kg after metrication.
Scruple (apothecary) to Seer (Ser) 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 seers (ser):
To convert scruples (apothecary) to seers (ser), multiply the value in scruples (apothecary) by 0.0013888889. To reverse, multiply seers (ser) by 719.9999969135.
How to use this converter
Type a value into the calculator. The result in seers (ser) updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Seer (Ser) to Scruple (apothecary) converter for the reverse direction.
Step-by-step: convert scruples (apothecary) to seers (ser)
- Write down the value in scruples (apothecary) (s ap).
- Multiply that value by the factor 0.0013888889.
- The product is the equivalent value in seers (ser) (seer).
- To reverse, multiply the seer (ser) value by 719.9999969135.
Worked examples
Example 1 — Convert 1 s ap to seer:
1 × 0.0013888889 = 0.0013888889 seer
Example 2 — Convert 100 s ap to seer:
100 × 0.0013888889 = 0.1388888895 seer
Real-world example — Children's height milestones
A 150-scruple (apothecary)-tall child measures a value in seers (ser) that's commonly used for theme-park ride height requirements when travelling between countries that use different measurement units.
150 s ap × 0.0013888889 = 0.2083333342 seer
Real-world example — Body height conversion
You enter your height as 180 scruples (apothecary) into an international job or visa application. The form then asks for the same value in seers (ser) — converting between these adjacent units is one of the most-used length conversions globally.
180 s ap × 0.0013888889 = 0.2500000011 seer
Real-world example — Furniture and large objects
A 72-scruple (apothecary) piece of furniture converts to a value in seers (ser) that's easier to mentally compare with room dimensions. This is the typical workflow when shopping internationally and product specs use a different unit than your room measurements.
72 s ap × 0.0013888889 = 0.1000000004 seer
Scruple (apothecary) to Seer (Ser) conversion table
Standard reference values for converting scruples (apothecary) to seers (ser):
| Scruple (apothecary) [s ap] | Seer (Ser) [seer] |
|---|---|
| 0.01 | 1.388889e-5 |
| 0.1 | 0.0001388889 |
| 1 | 0.0013888889 |
| 2 | 0.0027777778 |
| 3 | 0.0041666667 |
| 4 | 0.0055555556 |
| 5 | 0.0069444445 |
| 10 | 0.0138888889 |
| 20 | 0.0277777779 |
| 30 | 0.0416666668 |
| 40 | 0.0555555558 |
| 50 | 0.0694444447 |
| 100 | 0.1388888895 |
| 500 | 0.6944444474 |
| 1000 | 1.3888888948 |
Frequently asked questions
How many seers (ser) is 1 scruple (apothecary)?
How do I convert scruples (apothecary) to seers (ser)?
How do I convert seers (ser) back to scruples (apothecary)?
How many seers (ser) is 100 scruples (apothecary)?
Popular weight unit conversions
Convert Scruple (apothecary) to other weight units
Show all Scruple (apothecary) 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 s ap = 0.0013888889 seer) 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.