Mass and Weight · Unit Converter

Convert Scruple (apothecary) to Centigram

Convert scruples (apothecary) to centigrams instantly. 1 scruple (apothecary) = 129.59782 centigram — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Centigram 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 Last reviewed Updated

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.

Metric / SI

Centigram

What is a centigram?

A centigram (cg) equals 0.00001 kilogram, or 0.01 gram.

Origin of the centigram

From the SI prefix 'centi-' (from Latin 'centum', hundred).

Where it is used

Used in pharmacology and analytical chemistry.

When and where it was developed

Part of the original metric system of 1795.

Scruple (apothecary) to Centigram conversion formula

The relationship between scruples (apothecary) and centigrams:

1 s ap = 129.59782 cg
1 cg = 0.0077161792 s ap

To convert scruples (apothecary) to centigrams, multiply the value in scruples (apothecary) by 129.59782. To reverse, multiply centigrams by 0.0077161792.

How to use this converter

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

Step-by-step: convert scruples (apothecary) to centigrams

  1. Write down the value in scruples (apothecary) (s ap).
  2. Multiply that value by the factor 129.59782.
  3. The product is the equivalent value in centigrams (cg).
  4. To reverse, multiply the centigram value by 0.0077161792.

Worked examples

Example 1 — Convert 1 s ap to cg:
1 × 129.59782 = 129.59782 cg

Example 2 — Convert 100 s ap to cg:
100 × 129.59782 = 12959.782 cg

Real-world example — Adjacent metric sub-units

One scruple (apothecary) equals 1,000 centigrams. Engineers move between these scales constantly: PCB feature sizes in the larger unit, wire-bond diameters in the smaller.

1 s ap × 129.59782 = 129.59782 cg

Real-world example — Adjacent small-scale precision

One scruple (apothecary) equals 1,000 centigrams — the standard sub-millimeter precision conversion that materials engineers use whenever they switch between bulk material thickness specs (larger unit) and surface-finish characteristics (smaller unit).

1 s ap × 129.59782 = 129.59782 cg

Scruple (apothecary) to Centigram conversion table

Standard reference values for converting scruples (apothecary) to centigrams:

Scruple (apothecary) [s ap]Centigram [cg]
0.011.2959782
0.112.959782
1129.59782
2259.19564
3388.79346
4518.39128
5647.9891
101295.9782
202591.9564
303887.9346
405183.9128
506479.891
10012959.782
50064798.91
1000129597.82

Frequently asked questions

How many centigrams is 1 scruple (apothecary)?
1 scruple (apothecary) equals 129.59782 centigram.
How do I convert scruples (apothecary) to centigrams?
Multiply the value in scruples (apothecary) by 129.59782 to get centigrams.
How do I convert centigrams back to scruples (apothecary)?
Multiply the value in centigrams by 0.0077161792, or use the Centigram to Scruple (apothecary) converter.
How many centigrams is 100 scruples (apothecary)?
100 scruples (apothecary) equals 12959.782 centigrams, because 100 × 129.59782 = 12959.782.

Convert Scruple (apothecary) to other weight units

Show all Scruple (apothecary) conversions
Metric / SI (18 units)
Scruple (apothecary) to Attogram (ag) Scruple (apothecary) to Femtogram (fg) Scruple (apothecary) to Picogram (pg) Scruple (apothecary) to Nanogram (ng) Scruple (apothecary) to Microgram (µg) Scruple (apothecary) to Milligram (mg) Scruple (apothecary) to Centigram (cg) Scruple (apothecary) to Decigram (dg) Scruple (apothecary) to Gram (g) Scruple (apothecary) to Dekagram (dag) Scruple (apothecary) to Hectogram (hg) Scruple (apothecary) to Kilogram (kg) Scruple (apothecary) to Quintal (metric) (q) Scruple (apothecary) to Metric Ton (t) Scruple (apothecary) to Gigagram (Gg) Scruple (apothecary) to Teragram (Tg) Scruple (apothecary) to Petagram (Pg) Scruple (apothecary) to Exagram (Eg)
Avoirdupois (15 units)
Scruple (apothecary) to Grain (gr) Scruple (apothecary) to Dram (avoirdupois) (dr) Scruple (apothecary) to Ounce (oz) Scruple (apothecary) to Pound (lb) Scruple (apothecary) to Clove (clove) Scruple (apothecary) to Stone (US) (st) Scruple (apothecary) to Stone (UK) (st) Scruple (apothecary) to Quarter (US) (qr) Scruple (apothecary) to Quarter (UK) (qr) Scruple (apothecary) to Hundredweight (US) (cwt) Scruple (apothecary) to Hundredweight (UK) (cwt) Scruple (apothecary) to Wey (wey) Scruple (apothecary) to Kilopound (kip) (kip) Scruple (apothecary) to Ton (short, US) (sh tn) Scruple (apothecary) to Ton (long, UK) (long tn)
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)
Scruple (apothecary) to Lepton (Biblical Roman) (lepton) Scruple (apothecary) to Quadrans (Biblical Roman) (quadrans) Scruple (apothecary) to Assarion (Biblical Roman) (assarion) Scruple (apothecary) to Gerah (Biblical Hebrew) (gerah) Scruple (apothecary) to Drachma (Biblical Greek) (drachma) Scruple (apothecary) to Denarius (Biblical Roman) (denarius) Scruple (apothecary) to Bekan (Biblical Hebrew) (bekah) Scruple (apothecary) to Didrachma (Biblical Greek) (didrachma) Scruple (apothecary) to Shekel (Biblical Hebrew) (shekel) Scruple (apothecary) to Tetradrachma (Biblical Greek) (tetra) Scruple (apothecary) to Mina (Biblical Greek) (mina) Scruple (apothecary) to Mina (Biblical Hebrew) (mina) Scruple (apothecary) to Talent (Biblical Greek) (talent) Scruple (apothecary) to Talent (Biblical Hebrew) (talent)
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 = 129.59782 cg) verified against the following authoritative sources:

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