Mass and Weight · Unit Converter

Convert Point (1/100 carat) to Electron Mass (rest)

Convert points (1/100 carat) to electron mass (rest) instantly. 1 point (1/100 carat) = 2.195537e+24 electron mass (rest) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Electron Mass (rest) to Point (1/100 carat) 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

Point (1/100 carat)

What is a point (1/100 carat)?

A point equals one-hundredth of a carat, or 2 milligrams.

Origin of the point (1/100 carat)

A subdivision of the metric carat for very small stones.

Where it is used

The diamond trade, for sub-carat stones.

When and where it was developed

Adopted alongside the metric carat in the 20th-century gem trade.

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.

Point (1/100 carat) to Electron Mass (rest) 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 points (1/100 carat) and electron mass (rest):

1 pt = 2.195537e+24 me
1 me = 4.554695e-25 pt

To convert points (1/100 carat) to electron mass (rest), multiply the value in points (1/100 carat) by 2.195537e+24. To reverse, multiply electron mass (rest) by 4.554695e-25.

How to use this converter

Type a value into the calculator. The result in electron mass (rest) updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Electron Mass (rest) to Point (1/100 carat) converter for the reverse direction.

Step-by-step: convert points (1/100 carat) to electron mass (rest)

  1. Write down the value in points (1/100 carat) (pt).
  2. Multiply that value by the factor 2.195537e+24.
  3. The product is the equivalent value in electron mass (rest) (me).
  4. To reverse, multiply the electron mass (rest) value by 4.554695e-25.

Worked examples

Example 1 — Convert 1 pt to me:
1 × 2.195537e+24 = 2.195537e+24 me

Example 2 — Convert 100 pt to me:
100 × 2.195537e+24 = 2.195537e+26 me

Real-world example — Mid-micron to nanometer

3 points (1/100 carat) equals 3,000 electron mass (rest) — useful when relating mid-infrared wavelengths (typically quoted in microns) to nanometer-scale visible-light wavelength tables.

3 pt × 2.195537e+24 = 6.58661e+24 me

Real-world example — From microns to sub-micron features

One point (1/100 carat) equals one thousand electron mass (rest) — the conversion semiconductor designers do constantly when comparing mask feature dimensions to actual transistor gate lengths.

1 pt × 2.195537e+24 = 2.195537e+24 me

Real-world example — Infrared to visible-spectrum mapping

A 10-point (1/100 carat) thermal infrared wavelength corresponds to a much larger number in electron mass (rest), the unit favoured for ultraviolet and visible-light specifications.

10 pt × 2.195537e+24 = 2.195537e+25 me

Point (1/100 carat) to Electron Mass (rest) conversion table

Standard reference values for converting points (1/100 carat) to electron mass (rest):

Point (1/100 carat) [pt]Electron Mass (rest) [me]
0.012.195537e+22
0.12.195537e+23
12.195537e+24
24.391074e+24
36.58661e+24
48.782147e+24
51.097768e+25
102.195537e+25
204.391074e+25
306.58661e+25
408.782147e+25
501.097768e+26
1002.195537e+26
5001.097768e+27
10002.195537e+27

Frequently asked questions

How many electron mass (rest) is 1 point (1/100 carat)?
1 point (1/100 carat) equals 2.195537e+24 electron mass (rest).
How do I convert points (1/100 carat) to electron mass (rest)?
Multiply the value in points (1/100 carat) by 2.195537e+24 to get electron mass (rest).
How do I convert electron mass (rest) back to points (1/100 carat)?
Multiply the value in electron mass (rest) by 4.554695e-25, or use the Electron Mass (rest) to Point (1/100 carat) converter.
How many electron mass (rest) is 100 points (1/100 carat)?
100 points (1/100 carat) equals 2.195537e+26 electron mass (rest), because 100 × 2.195537e+24 = 2.195537e+26.

Convert Point (1/100 carat) to other weight units

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

Sources & references

Conversion factor (1 pt = 2.195537e+24 me) verified against the following authoritative sources:

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