Mass and Weight · Unit Converter

Convert Electron Mass (rest) to Momme

Convert electron mass (rest) to mommes instantly. 1 electron mass (rest) = 2.429171e-28 momme — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Momme to Electron Mass (rest) 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

Scientific / Atomic

Electron Mass (rest)

What is a electron mass (rest)?

The electron rest mass is about 9.109E-31 kg.

Origin of the electron mass (rest)

The mass of the electron, the lightest charged elementary particle.

Where it is used

Atomic and particle physics.

When and where it was developed

Quantified after J. J. Thomson identified the electron in 1897.

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.

Electron Mass (rest) 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 electron mass (rest) and mommes:

1 me = 2.429171e-28 mom
1 mom = 4.116631e+27 me

To convert electron mass (rest) to mommes, multiply the value in electron mass (rest) by 2.429171e-28. To reverse, multiply mommes by 4.116631e+27.

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 Electron Mass (rest) converter for the reverse direction.

Step-by-step: convert electron mass (rest) to mommes

  1. Write down the value in electron mass (rest) (me).
  2. Multiply that value by the factor 2.429171e-28.
  3. The product is the equivalent value in mommes (mom).
  4. To reverse, multiply the momme value by 4.116631e+27.

Worked examples

Example 1 — Convert 1 me to mom:
1 × 2.429171e-28 = 2.429171e-28 mom

Example 2 — Convert 100 me to mom:
100 × 2.429171e-28 = 2.429171e-26 mom

Real-world example — Sub-micron to millimeter

500,000 electron mass (rest) converts to a small everyday quantity in mommes — useful when relating optical-wavelength specifications to physical mounting hardware.

500000 me × 2.429171e-28 = 1.214585e-22 mom

Real-world example — From wavelengths to millimeter-scale objects

A value of one million electron mass (rest) sounds vast at the atomic scale but converts to a small everyday quantity in mommes — useful when relating optical-wavelength specifications to physical mounting hardware.

1000000 me × 2.429171e-28 = 2.429171e-22 mom

Electron Mass (rest) to Momme conversion table

Standard reference values for converting electron mass (rest) to mommes:

Electron Mass (rest) [me]Momme [mom]
0.012.429171e-30
0.12.429171e-29
12.429171e-28
24.858341e-28
37.287512e-28
49.716682e-28
51.214585e-27
102.429171e-27
204.858341e-27
307.287512e-27
409.716682e-27
501.214585e-26
1002.429171e-26
5001.214585e-25
10002.429171e-25

Frequently asked questions

How many mommes is 1 electron mass (rest)?
1 electron mass (rest) equals 2.429171e-28 momme.
How do I convert electron mass (rest) to mommes?
Multiply the value in electron mass (rest) by 2.429171e-28 to get mommes.
How do I convert mommes back to electron mass (rest)?
Multiply the value in mommes by 4.116631e+27, or use the Momme to Electron Mass (rest) converter.
How many mommes is 100 electron mass (rest)?
100 electron mass (rest) equals 2.429171e-26 mommes, because 100 × 2.429171e-28 = 2.429171e-26.

Convert Electron Mass (rest) to other weight units

Show all Electron Mass (rest) conversions
Metric / SI (18 units)
Electron Mass (rest) to Attogram (ag) Electron Mass (rest) to Femtogram (fg) Electron Mass (rest) to Picogram (pg) Electron Mass (rest) to Nanogram (ng) Electron Mass (rest) to Microgram (µg) Electron Mass (rest) to Milligram (mg) Electron Mass (rest) to Centigram (cg) Electron Mass (rest) to Decigram (dg) Electron Mass (rest) to Gram (g) Electron Mass (rest) to Dekagram (dag) Electron Mass (rest) to Hectogram (hg) Electron Mass (rest) to Kilogram (kg) Electron Mass (rest) to Quintal (metric) (q) Electron Mass (rest) to Metric Ton (t) Electron Mass (rest) to Gigagram (Gg) Electron Mass (rest) to Teragram (Tg) Electron Mass (rest) to Petagram (Pg) Electron Mass (rest) to Exagram (Eg)
Avoirdupois (15 units)
Electron Mass (rest) to Grain (gr) Electron Mass (rest) to Dram (avoirdupois) (dr) Electron Mass (rest) to Ounce (oz) Electron Mass (rest) to Pound (lb) Electron Mass (rest) to Clove (clove) Electron Mass (rest) to Stone (US) (st) Electron Mass (rest) to Stone (UK) (st) Electron Mass (rest) to Quarter (US) (qr) Electron Mass (rest) to Quarter (UK) (qr) Electron Mass (rest) to Hundredweight (US) (cwt) Electron Mass (rest) to Hundredweight (UK) (cwt) Electron Mass (rest) to Wey (wey) Electron Mass (rest) to Kilopound (kip) (kip) Electron Mass (rest) to Ton (short, US) (sh tn) Electron Mass (rest) to Ton (long, UK) (long tn)
Troy & Apothecary (10 units)
Electron Mass (rest) to Point (1/100 carat) (pt) Electron Mass (rest) to Carat (metric) (ct) Electron Mass (rest) to Scruple (apothecary) (s ap) Electron Mass (rest) to Pennyweight (dwt) Electron Mass (rest) to Momme (mom) Electron Mass (rest) to Mace (mace) Electron Mass (rest) to Dram (apothecary/troy) (dr ap) Electron Mass (rest) to Troy Ounce (oz t) Electron Mass (rest) to Tael (tael) Electron Mass (rest) to Pound (troy/apothecary) (lb t)
Indian / South Asian (6 units)
Electron Mass (rest) to Ratti (ratti) Electron Mass (rest) to Masha (masha) Electron Mass (rest) to Tola (tola) Electron Mass (rest) to Chittack (Chatank) (chittack) Electron Mass (rest) to Seer (Ser) (seer) Electron Mass (rest) to Maund (Mann) (maund)
Scientific / Atomic (8 units)
Electron Mass (rest) to MeV/c2 (MeV/c²) Electron Mass (rest) to Muon Mass (mµ) Electron Mass (rest) to Atomic Mass Unit (u) Electron Mass (rest) to Proton Mass (mp) Electron Mass (rest) to Neutron Mass (mn) Electron Mass (rest) to Deuteron Mass (md) Electron Mass (rest) to Carbon-12 Atom Mass (C-12) Electron Mass (rest) to Planck Mass (mP)
Astronomical (4 units)
Electron Mass (rest) to Lunar Mass (Moon) (M☾) Electron Mass (rest) to Earth's Mass (M⊕) Electron Mass (rest) to Jupiter Mass (MJ) Electron Mass (rest) to Sun's Mass (M☉)
Biblical / Ancient (14 units)
Electron Mass (rest) to Lepton (Biblical Roman) (lepton) Electron Mass (rest) to Quadrans (Biblical Roman) (quadrans) Electron Mass (rest) to Assarion (Biblical Roman) (assarion) Electron Mass (rest) to Gerah (Biblical Hebrew) (gerah) Electron Mass (rest) to Drachma (Biblical Greek) (drachma) Electron Mass (rest) to Denarius (Biblical Roman) (denarius) Electron Mass (rest) to Bekan (Biblical Hebrew) (bekah) Electron Mass (rest) to Didrachma (Biblical Greek) (didrachma) Electron Mass (rest) to Shekel (Biblical Hebrew) (shekel) Electron Mass (rest) to Tetradrachma (Biblical Greek) (tetra) Electron Mass (rest) to Mina (Biblical Greek) (mina) Electron Mass (rest) to Mina (Biblical Hebrew) (mina) Electron Mass (rest) to Talent (Biblical Greek) (talent) Electron Mass (rest) to Talent (Biblical Hebrew) (talent)
Force / Engineering (5 units)
Electron Mass (rest) to Poundal (pdl) Electron Mass (rest) to Ton (assay) (US) (AT) Electron Mass (rest) to Ton (assay) (UK) (AT) Electron Mass (rest) to Kilogram-force square second/meter (hyl) Electron Mass (rest) to Slug (slug)

Sources & references

Conversion factor (1 me = 2.429171e-28 mom) verified against the following authoritative sources:

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