Mass and Weight · Unit Converter

Convert Carat (metric) to Momme

Convert carats (metric) to mommes instantly. 1 carat (metric) = 0.0533333333 momme — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Momme to Carat (metric) 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

Carat (metric)

What is a carat (metric)?

The metric carat (ct) equals exactly 200 milligrams (0.0002 kg).

Origin of the carat (metric)

From Arabic 'qirat' and Greek 'keration', the carob seed once used as a counterweight.

Where it is used

The worldwide standard for gemstone and diamond mass.

When and where it was developed

The metric carat was fixed at 200 mg internationally in 1907.

Troy & Apothecary

Momme

What is a momme?

The momme (mom) equals 3.75 grams.

Origin of the momme

A traditional Japanese mass unit (Japanese 'monme').

Where it is used

Pearls, and as the standard weight grade for silk fabric.

When and where it was developed

Part of the traditional Japanese shakkanho system.

Carat (metric) to Momme 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 carats (metric) and mommes:

1 ct = 0.0533333333 mom
1 mom = 18.75 ct

To convert carats (metric) to mommes, multiply the value in carats (metric) by 0.0533333333. To reverse, multiply mommes by 18.75.

How to use this converter

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

Step-by-step: convert carats (metric) to mommes

  1. Write down the value in carats (metric) (ct).
  2. Multiply that value by the factor 0.0533333333.
  3. The product is the equivalent value in mommes (mom).
  4. To reverse, multiply the momme value by 18.75.

Worked examples

Example 1 — Convert 1 ct to mom:
1 × 0.0533333333 = 0.0533333333 mom

Example 2 — Convert 100 ct to mom:
100 × 0.0533333333 = 5.3333333333 mom

Real-world example — Packaging gauge

A 4-carat (metric) plastic bag thickness is a common spec for grocery and freezer bags. Converting from carats (metric) to mommes is what packaging buyers do whenever they bridge US and metric supplier quotes.

4 ct × 0.0533333333 = 0.2133333333 mom

Real-world example — Plastic film and laminate thickness

A 500-carat (metric) sheet is a typical spec for ID-card laminates and film overlays. Converting to mommes aligns the value with the unit most CAD systems and material datasheets prefer.

500 ct × 0.0533333333 = 26.6666666667 mom

Carat (metric) to Momme conversion table

Standard reference values for converting carats (metric) to mommes:

Carat (metric) [ct]Momme [mom]
0.010.0005333333
0.10.0053333333
10.0533333333
20.1066666667
30.16
40.2133333333
50.2666666667
100.5333333333
201.0666666667
301.6
402.1333333333
502.6666666667
1005.3333333333
50026.6666666667
100053.3333333333

Frequently asked questions

How many mommes is 1 carat (metric)?
1 carat (metric) equals 0.0533333333 momme.
How do I convert carats (metric) to mommes?
Multiply the value in carats (metric) by 0.0533333333 to get mommes.
How do I convert mommes back to carats (metric)?
Multiply the value in mommes by 18.75, or use the Momme to Carat (metric) converter.
How many mommes is 100 carats (metric)?
100 carats (metric) equals 5.3333333333 mommes, because 100 × 0.0533333333 = 5.3333333333.

Convert Carat (metric) to other weight units

Show all Carat (metric) conversions
Metric / SI (18 units)
Carat (metric) to Attogram (ag) Carat (metric) to Femtogram (fg) Carat (metric) to Picogram (pg) Carat (metric) to Nanogram (ng) Carat (metric) to Microgram (µg) Carat (metric) to Milligram (mg) Carat (metric) to Centigram (cg) Carat (metric) to Decigram (dg) Carat (metric) to Gram (g) Carat (metric) to Dekagram (dag) Carat (metric) to Hectogram (hg) Carat (metric) to Kilogram (kg) Carat (metric) to Quintal (metric) (q) Carat (metric) to Metric Ton (t) Carat (metric) to Gigagram (Gg) Carat (metric) to Teragram (Tg) Carat (metric) to Petagram (Pg) Carat (metric) to Exagram (Eg)
Avoirdupois (15 units)
Carat (metric) to Grain (gr) Carat (metric) to Dram (avoirdupois) (dr) Carat (metric) to Ounce (oz) Carat (metric) to Pound (lb) Carat (metric) to Clove (clove) Carat (metric) to Stone (US) (st) Carat (metric) to Stone (UK) (st) Carat (metric) to Quarter (US) (qr) Carat (metric) to Quarter (UK) (qr) Carat (metric) to Hundredweight (US) (cwt) Carat (metric) to Hundredweight (UK) (cwt) Carat (metric) to Wey (wey) Carat (metric) to Kilopound (kip) (kip) Carat (metric) to Ton (short, US) (sh tn) Carat (metric) to Ton (long, UK) (long tn)
Troy & Apothecary (9 units)
Carat (metric) to Point (1/100 carat) (pt) Carat (metric) to Scruple (apothecary) (s ap) Carat (metric) to Pennyweight (dwt) Carat (metric) to Momme (mom) Carat (metric) to Mace (mace) Carat (metric) to Dram (apothecary/troy) (dr ap) Carat (metric) to Troy Ounce (oz t) Carat (metric) to Tael (tael) Carat (metric) to Pound (troy/apothecary) (lb t)
Indian / South Asian (6 units)
Carat (metric) to Ratti (ratti) Carat (metric) to Masha (masha) Carat (metric) to Tola (tola) Carat (metric) to Chittack (Chatank) (chittack) Carat (metric) to Seer (Ser) (seer) Carat (metric) to Maund (Mann) (maund)
Scientific / Atomic (9 units)
Carat (metric) to Electron Mass (rest) (me) Carat (metric) to MeV/c2 (MeV/c²) Carat (metric) to Muon Mass (mµ) Carat (metric) to Atomic Mass Unit (u) Carat (metric) to Proton Mass (mp) Carat (metric) to Neutron Mass (mn) Carat (metric) to Deuteron Mass (md) Carat (metric) to Carbon-12 Atom Mass (C-12) Carat (metric) to Planck Mass (mP)
Astronomical (4 units)
Carat (metric) to Lunar Mass (Moon) (M☾) Carat (metric) to Earth's Mass (M⊕) Carat (metric) to Jupiter Mass (MJ) Carat (metric) to Sun's Mass (M☉)
Biblical / Ancient (14 units)
Carat (metric) to Lepton (Biblical Roman) (lepton) Carat (metric) to Quadrans (Biblical Roman) (quadrans) Carat (metric) to Assarion (Biblical Roman) (assarion) Carat (metric) to Gerah (Biblical Hebrew) (gerah) Carat (metric) to Drachma (Biblical Greek) (drachma) Carat (metric) to Denarius (Biblical Roman) (denarius) Carat (metric) to Bekan (Biblical Hebrew) (bekah) Carat (metric) to Didrachma (Biblical Greek) (didrachma) Carat (metric) to Shekel (Biblical Hebrew) (shekel) Carat (metric) to Tetradrachma (Biblical Greek) (tetra) Carat (metric) to Mina (Biblical Greek) (mina) Carat (metric) to Mina (Biblical Hebrew) (mina) Carat (metric) to Talent (Biblical Greek) (talent) Carat (metric) to Talent (Biblical Hebrew) (talent)
Force / Engineering (5 units)
Carat (metric) to Poundal (pdl) Carat (metric) to Ton (assay) (US) (AT) Carat (metric) to Ton (assay) (UK) (AT) Carat (metric) to Kilogram-force square second/meter (hyl) Carat (metric) to Slug (slug)

Sources & references

Conversion factor (1 ct = 0.0533333333 mom) verified against the following authoritative sources:

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