Mass and Weight · Unit Converter

Convert Carat (metric) to Sun's Mass

Convert carats (metric) to sun's mass instantly. 1 carat (metric) = 1e-34 sun's mass — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Sun's Mass 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 June 10, 2026 Last reviewed June 10, 2026 Updated June 10, 2026

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.

Astronomical

Sun's Mass

What is a sun's mass?

The solar mass (M(S)) is about 2.0E30 kg.

Origin of the sun's mass

The standard unit for expressing stellar and galactic masses.

Where it is used

Astrophysics and cosmology.

When and where it was developed

Established as astronomers measured the Sun's gravitational influence.

Carat (metric) to Sun's Mass 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 sun's mass:

1 ct = 1e-34 M☉

1 M☉ = 1e+34 ct

To convert carats (metric) to sun's mass, multiply the value in carats (metric) by 1e-34. To reverse, multiply sun's mass by 1e+34.

How to use this converter

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

Step-by-step: convert carats (metric) to sun's mass

Write down the value in carats (metric) (ct).
Multiply that value by the factor 1e-34.
The product is the equivalent value in sun's mass (M☉).
To reverse, multiply the sun's mass value by 1e+34.

Worked examples

Example 1 — Convert 1 ct to M☉:
1 × 1e-34 = 1e-34 M☉

Example 2 — Convert 100 ct to M☉:
100 × 1e-34 = 1e-32 M☉

Real-world example — Hair-width scale measurements

A 70-carat (metric) measurement (about the diameter of a human hair) is the kind of value materials engineers regularly express in adjacent micro-scale units like sun's mass for direct comparison across supplier datasheets.

70 ct × 1e-34 = 7e-33 M☉

Real-world example — Paper and film thicknesses

At the thickness of office paper (roughly 3 carats (metric)), converting between sub-millimeter units is routine for packaging and printing buyers comparing quotes from metric and US suppliers.

3 ct × 1e-34 = 3e-34 M☉

Real-world example — Plastic-film thickness alternates

A 150-carat (metric) plastic film converts cleanly to sun's mass — useful for packaging buyers reconciling supplier datasheets across metric and US measurement systems.

150 ct × 1e-34 = 1.5e-32 M☉

Carat (metric) to Sun's Mass conversion table

Standard reference values for converting carats (metric) to sun's mass:

Carat (metric) [ct]	Sun's Mass [M☉]
0.01	1e-36
0.1	1e-35
1	1e-34
2	2e-34
3	3e-34
4	4e-34
5	5e-34
10	1e-33
20	2e-33
30	3e-33
40	4e-33
50	5e-33
100	1e-32
500	5e-32
1000	1e-31

Frequently asked questions

How many sun's mass is 1 carat (metric)?

1 carat (metric) equals 1e-34 sun's mass.

How do I convert carats (metric) to sun's mass?

Multiply the value in carats (metric) by 1e-34 to get sun's mass.

How do I convert sun's mass back to carats (metric)?

Multiply the value in sun's mass by 1e+34, or use the Sun's Mass to Carat (metric) converter.

How many sun's mass is 100 carats (metric)?

100 carats (metric) equals 1e-32 sun's mass, because 100 × 1e-34 = 1e-32.

Convert Carat (metric) to other weight units

Show all Carat (metric) conversions

Metric / SI (18 units)

Avoirdupois (15 units)

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 = 1e-34 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.