Mass and Weight · Unit Converter

Convert Scruple (apothecary) to Lunar Mass (Moon)

Convert scruples (apothecary) to lunar mass (moon) instantly. 1 scruple (apothecary) = 1.765157e-26 lunar mass (moon) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Lunar Mass (Moon) to Scruple (apothecary) converter for the reverse conversion.

Written by Sunith Babu L, Ph.D., Lead Engineer Reviewed by Dr. Ashok Kumar K, Ph.D.

Mass and Weight category 2 min read Published June 10, 2026 Last reviewed June 10, 2026 Updated June 10, 2026

Units explained

Troy & Apothecary

Scruple (apothecary)

What is a scruple (apothecary)?

The apothecary scruple equals 20 grains, about 1.296 grams.

Origin of the scruple (apothecary)

From Latin 'scrupulus', a small sharp pebble used as a tiny weight.

Where it is used

Historical apothecary dosing of powders.

When and where it was developed

Part of the apothecaries' system used through the 19th century.

Astronomical

Lunar Mass (Moon)

What is a lunar mass (moon)?

The lunar mass (M(L)) is about 7.342E22 kg.

Origin of the lunar mass (moon)

The mass of the Moon, used as a unit for natural satellites.

Where it is used

Planetary science, for comparing moons of the solar system.

When and where it was developed

Determined from the Moon's orbit and modern spacecraft tracking.

Scruple (apothecary) to Lunar Mass (Moon) 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 lunar mass (moon):

1 s ap = 1.765157e-26 M☾

1 M☾ = 5.665219e+25 s ap

To convert scruples (apothecary) to lunar mass (moon), multiply the value in scruples (apothecary) by 1.765157e-26. To reverse, multiply lunar mass (moon) by 5.665219e+25.

How to use this converter

Type a value into the calculator. The result in lunar mass (moon) updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Lunar Mass (Moon) to Scruple (apothecary) converter for the reverse direction.

Step-by-step: convert scruples (apothecary) to lunar mass (moon)

Write down the value in scruples (apothecary) (s ap).
Multiply that value by the factor 1.765157e-26.
The product is the equivalent value in lunar mass (moon) (M☾).
To reverse, multiply the lunar mass (moon) value by 5.665219e+25.

Worked examples

Example 1 — Convert 1 s ap to M☾:
1 × 1.765157e-26 = 1.765157e-26 M☾

Example 2 — Convert 100 s ap to M☾:
100 × 1.765157e-26 = 1.765157e-24 M☾

Real-world example — Ruler-scale measurements

A 30-scruple (apothecary) school ruler converts cleanly to lunar mass (moon) — useful when buying a desk accessory from a retailer whose product specs use a different unit.

30 s ap × 1.765157e-26 = 5.295471e-25 M☾

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 lunar mass (moon) daily when mixing metric and imperial tools.

10 s ap × 1.765157e-26 = 1.765157e-25 M☾

Real-world example — Postcard and small-object dimensions

A postcard is about 5 scruples (apothecary) wide. Converting to lunar mass (moon) is essential for international postal addressing forms that ask for dimensions in different units across countries.

5 s ap × 1.765157e-26 = 8.825785e-26 M☾

Scruple (apothecary) to Lunar Mass (Moon) conversion table

Standard reference values for converting scruples (apothecary) to lunar mass (moon):

Scruple (apothecary) [s ap]	Lunar Mass (Moon) [M☾]
0.01	1.765157e-28
0.1	1.765157e-27
1	1.765157e-26
2	3.530314e-26
3	5.295471e-26
4	7.060628e-26
5	8.825785e-26
10	1.765157e-25
20	3.530314e-25
30	5.295471e-25
40	7.060628e-25
50	8.825785e-25
100	1.765157e-24
500	8.825785e-24
1000	1.765157e-23

Frequently asked questions

How many lunar mass (moon) is 1 scruple (apothecary)?

1 scruple (apothecary) equals 1.765157e-26 lunar mass (moon).

How do I convert scruples (apothecary) to lunar mass (moon)?

Multiply the value in scruples (apothecary) by 1.765157e-26 to get lunar mass (moon).

How do I convert lunar mass (moon) back to scruples (apothecary)?

Multiply the value in lunar mass (moon) by 5.665219e+25, or use the Lunar Mass (Moon) to Scruple (apothecary) converter.

How many lunar mass (moon) is 100 scruples (apothecary)?

100 scruples (apothecary) equals 1.765157e-24 lunar mass (moon), because 100 × 1.765157e-26 = 1.765157e-24.

Convert Scruple (apothecary) to other weight units

Show all Scruple (apothecary) conversions

Metric / SI (18 units)

Avoirdupois (15 units)

Troy & Apothecary (9 units)

Scruple (apothecary) to Point (1/100 carat) (pt) Scruple (apothecary) to Carat (metric) (ct) Scruple (apothecary) to Pennyweight (dwt) Scruple (apothecary) to Momme (mom) Scruple (apothecary) to Mace (mace) Scruple (apothecary) to Dram (apothecary/troy) (dr ap) Scruple (apothecary) to Troy Ounce (oz t) Scruple (apothecary) to Tael (tael) Scruple (apothecary) to Pound (troy/apothecary) (lb t)

Indian / South Asian (6 units)

Scruple (apothecary) to Ratti (ratti) Scruple (apothecary) to Masha (masha) Scruple (apothecary) to Tola (tola) Scruple (apothecary) to Chittack (Chatank) (chittack) Scruple (apothecary) to Seer (Ser) (seer) Scruple (apothecary) to Maund (Mann) (maund)

Scientific / Atomic (9 units)

Scruple (apothecary) to Electron Mass (rest) (me) Scruple (apothecary) to MeV/c2 (MeV/c²) Scruple (apothecary) to Muon Mass (mµ) Scruple (apothecary) to Atomic Mass Unit (u) Scruple (apothecary) to Proton Mass (mp) Scruple (apothecary) to Neutron Mass (mn) Scruple (apothecary) to Deuteron Mass (md) Scruple (apothecary) to Carbon-12 Atom Mass (C-12) Scruple (apothecary) to Planck Mass (mP)

Astronomical (4 units)

Scruple (apothecary) to Lunar Mass (Moon) (M☾) Scruple (apothecary) to Earth's Mass (M⊕) Scruple (apothecary) to Jupiter Mass (MJ) Scruple (apothecary) to Sun's Mass (M☉)

Biblical / Ancient (14 units)

Force / Engineering (5 units)

Scruple (apothecary) to Poundal (pdl) Scruple (apothecary) to Ton (assay) (US) (AT) Scruple (apothecary) to Ton (assay) (UK) (AT) Scruple (apothecary) to Kilogram-force square second/meter (hyl) Scruple (apothecary) to Slug (slug)

Sources & references

Conversion factor (1 s ap = 1.765157e-26 M☾) 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.

Results are provided for general reference. Verify critical measurements against an authoritative standard.