Mu Symbol Copy Paste

Copy the Greek μ, the micro sign µ, or a ready unit such as μm, μg or μL.

μGreek small letter muU+03BCReady to copy

52 mu characters and units. Tap any value to copy it.

52 mu characters and units. A character and its name both copy the character. A code copies the code.
Character	Name	Code point	Alt code	Option keys	HTML	LaTeX
	U+03BC. The Greek letter, twelfth of its alphabet, and the character Unicode prefers for the micro prefix. μ in HTML and \mu in LaTeX. It has no Alt code: Alt+230 types the micro sign.
	U+00B5. The micro sign, carried over from 8-bit character sets, where it sat at byte B5. Unicode defines it as a compatibility form of U+03BC. Alt+230 or Alt+0181 on a number pad, and µ in HTML.
	U+039C. The capital. It looks the same as a Latin M, so formulas leave it alone. Μ in HTML.
	U+1D707. The slanted mu of a printed formula. Unicode defines it as U+03BC in an italic font. It has no HTML name, and standard LaTeX slants a plain \mu by itself.
	Made of U+03BC and U+006D. A millionth of a metre, also called a micron. Made with the Greek letter, the form Unicode prefers.
	Made of U+03BC and U+0067. A millionth of a gram. Medical writing often spells it mcg, because a handwritten μg can be misread as mg.
	Made of U+03BC and U+004C. A millionth of a litre. The litre may be written with a capital L or a small l, and the capital is harder to take for the digit 1.
	Made of U+03BC and U+0073. A millionth of a second.
	Made of U+03BC and U+0046. A millionth of a farad. Where only Latin letters were on hand, older standards let it be written uF.
	Made of U+03BC and U+2080. Mu with a subscript zero, U+2080. Read mu nought or mu zero, it is the vacuum magnetic permeability.
	U+1D6CD. Upright bold. One of five maths styles of small mu, all added in Unicode 3.1 (2001).
	U+1D741. Bold and slanted: U+03BC in a bold italic font, by Unicode's definition.
	U+1D77B. Bold with no serifs. Unicode has sans-serif Greek in bold and bold italic only.
	U+1D7B5. Bold, slanted and without serifs.
	U+1D6B3. Upright bold capital. Unicode defines it as U+039C in a bold font.
	U+1D6ED. Slanted capital, U+039C in an italic font.
	U+1D727. Bold and slanted capital.
	U+1D761. Bold capital with no serifs.
	U+1D79B. Bold, slanted capital with no serifs.
	Made of U+03BC and U+0041. A millionth of an ampere.
	Made of U+03BC and U+0056. A millionth of a volt.
	Made of U+03BC and U+0057. A millionth of a watt.
	Made of U+03BC and U+03A9. A millionth of an ohm. The ohm here is the Greek capital omega, U+03A9, which Unicode prefers to the ohm sign U+2126.
	Made of U+03BC and U+0048. A millionth of a henry, the unit of inductance.
	Made of U+03BC and U+0054. A millionth of a tesla.
	Made of U+03BC, U+006D, U+006F and U+006C. A millionth of a mole.
	Made of U+03BC, U+006D and U+00B2. Micrometre with a superscript two, U+00B2.
	U+339B. Micrometre in one character, from the CJK Compatibility block. Unicode defines it as μ and m set in a square.
	U+338D. Microgram in one character: μ and g in a square.
	U+3395. Microlitre in one character. Unicode defines it as μ and the script small l, U+2113.
	U+33B2. Microsecond in one character: μ and s in a square.
	U+338C. Microfarad in one character: μ and F in a square.
	U+3382. Microampere in one character: μ and A in a square.
	U+33B6. Microvolt in one character: μ and V in a square.
	U+33BC. Microwatt in one character: μ and W in a square.
	U+3343. The katakana word maikuro in one square. Unicode's names list glosses it as micro-.
	U+3348. The katakana word mikuron in one square. Unicode's names list glosses it as micron.
	Made of U+03BC and U+0302. Mu with a combining circumflex, U+0302, which Unicode also names hat. In statistics a hat marks an estimate, so this is an estimated mean.
	Made of U+03BC and U+2093. Mu with a subscript x, U+2093: the mean of a variable x.
	Made of U+0078 and U+0304. An x with a combining macron, U+0304. It is the mean of a sample, written this way to keep it apart from the population mean μ.
	Made of U+03BC, U+00B1 and U+03C3. One standard deviation either side of the mean. About 68% of a normal distribution lies inside it.
	Made of U+03BC, U+00B1, U+0032 and U+03C3. Two standard deviations either side of the mean, which holds about 95% of a normal distribution.
	Made of U+03BC and U+2096. Mu with a subscript k, U+2096, for surfaces that slide over each other. A coefficient of friction has no unit.
	Made of U+03BC and U+209B. Mu with a subscript s, U+209B, for surfaces at rest. It is usually larger than the kinetic coefficient.
	Made of U+03BC, U+0028, U+006E and U+0029. Mu, then n in brackets: the Möbius function of number theory.
	Made of U+03BC and U+207B. Mu with a superscript minus, U+207B. The muon is a lepton like the electron, far heavier, first seen in cosmic rays in 1936.
	Made of U+03BC and U+207A. Mu with a superscript plus, U+207A: the muon's antiparticle.
	U+1090C. Mem, the Phoenician letter that mu comes from. The Phoenicians named it after their word for water. Added in Unicode 5.0 (2006).
	U+2C98. Mi, the Coptic counterpart of mu. Added with the Coptic block in Unicode 4.1 (2005).
	U+2C99. The small letter of the Coptic pair.
	U+041C. Em, the Cyrillic letter that derives from mu, as the Latin M does. &Mcy; in HTML.
	U+043C. Small em, &mcy; in HTML.

Next step µ is Alt+230: the whole table of Alt codes Bold and italic serif letters for whole words

How it works

Two characters look like mu. μ, U+03BC, is the Greek letter and the first row. µ, U+00B5, is the micro sign, the one Alt codes type. The 52 rows also hold ready units such as μm, μg and μL, built on the Greek letter.

Read the full guide

Which of the two to use

Unicode prefers the Greek letter for the micro prefix and asks software to accept the micro sign too, because older character sets had only the sign. Alt+230, Alt+0181 and Option+M all type the sign. No Alt code or Option key types the Greek letter, so copy it, or write μ in HTML and \mu in LaTeX.

Tips

Medical writing often spells microgram mcg, because a handwritten μg can be read as mg. In the physical sciences μg stays the official form.
Where only Latin letters were available, ISO 2955 allowed u in place of μ, as in um and uF. That standard was withdrawn in 2001.
Micro dates from 1873 and is the only SI prefix not written in Latin letters. The capital Μ goes unused: it looks like M.

Questions and answers

How do I type the mu symbol on a keyboard?

On Windows, hold Alt and type 230 on the number pad, or 0181. On a Mac with the U.S. layout, press Option and M. Both give the micro sign µ. In Word, type 03BC, then Alt and X, for the Greek μ.

Which micro symbol should I copy and paste?

The Greek letter μ, U+03BC, is the one Unicode prefers for the prefix. The micro sign µ, U+00B5, is its older twin and is still accepted. They look alike and are two code points, so a document that mixes them holds two different characters.

What is the HTML code for mu?

μ is the Greek letter, or μ and μ as numbers. µ is the micro sign, µ or µ. Μ with a capital M is the capital letter, so case matters.

What does μ stand for?

In front of a unit it means a millionth, from the Greek mikros, small. In statistics μ is the population mean, set against the sample mean x̄. In physics it names the coefficient of friction, permeability, viscosity and the muon.

All 52 mu characters and units

Start here 10

Greek capital letter mu U+039C. The capital. It looks the same as a Latin M, so formulas leave it alone. Μ in HTML.
Greek small letter mu U+03BC. The Greek letter, twelfth of its alphabet, and the character Unicode prefers for the micro prefix. μ in HTML and \mu in LaTeX. It has no Alt code: Alt+230 types the micro sign.
Mathematical italic small mu U+1D707. The slanted mu of a printed formula. Unicode defines it as U+03BC in an italic font. It has no HTML name, and standard LaTeX slants a plain \mu by itself.
Micro sign U+00B5. The micro sign, carried over from 8-bit character sets, where it sat at byte B5. Unicode defines it as a compatibility form of U+03BC. Alt+230 or Alt+0181 on a number pad, and µ in HTML.
Microfarad Made of U+03BC and U+0046. A millionth of a farad. Where only Latin letters were on hand, older standards let it be written uF.
Microgram Made of U+03BC and U+0067. A millionth of a gram. Medical writing often spells it mcg, because a handwritten μg can be misread as mg.

Show all 52 mu characters and units (46 more)

Start here, continued

Microlitre Made of U+03BC and U+004C. A millionth of a litre. The litre may be written with a capital L or a small l, and the capital is harder to take for the digit 1.
Micrometre Made of U+03BC and U+006D. A millionth of a metre, also called a micron. Made with the Greek letter, the form Unicode prefers.
Microsecond Made of U+03BC and U+0073. A millionth of a second.
Mu nought Made of U+03BC and U+2080. Mu with a subscript zero, U+2080. Read mu nought or mu zero, it is the vacuum magnetic permeability.

Small mu and micro sign 4

Mathematical bold italic small mu U+1D741. Bold and slanted: U+03BC in a bold italic font, by Unicode's definition.
Mathematical bold small mu U+1D6CD. Upright bold. One of five maths styles of small mu, all added in Unicode 3.1 (2001).
Mathematical sans-serif bold italic small mu U+1D7B5. Bold, slanted and without serifs.
Mathematical sans-serif bold small mu U+1D77B. Bold with no serifs. Unicode has sans-serif Greek in bold and bold italic only.

Capital mu 5

Mathematical bold capital mu U+1D6B3. Upright bold capital. Unicode defines it as U+039C in a bold font.
Mathematical bold italic capital mu U+1D727. Bold and slanted capital.
Mathematical italic capital mu U+1D6ED. Slanted capital, U+039C in an italic font.
Mathematical sans-serif bold capital mu U+1D761. Bold capital with no serifs.
Mathematical sans-serif bold italic capital mu U+1D79B. Bold, slanted capital with no serifs.

Micro units 8

Microampere Made of U+03BC and U+0041. A millionth of an ampere.
Microhenry Made of U+03BC and U+0048. A millionth of a henry, the unit of inductance.
Micromole Made of U+03BC, U+006D, U+006F and U+006C. A millionth of a mole.
Microohm Made of U+03BC and U+03A9. A millionth of an ohm. The ohm here is the Greek capital omega, U+03A9, which Unicode prefers to the ohm sign U+2126.
Microtesla Made of U+03BC and U+0054. A millionth of a tesla.
Microvolt Made of U+03BC and U+0056. A millionth of a volt.
Microwatt Made of U+03BC and U+0057. A millionth of a watt.
Square micrometre Made of U+03BC, U+006D and U+00B2. Micrometre with a superscript two, U+00B2.

Units in one character 10

Square maikuro U+3343. The katakana word maikuro in one square. Unicode's names list glosses it as micro-.
Square mikuron U+3348. The katakana word mikuron in one square. Unicode's names list glosses it as micron.
Square mu A U+3382. Microampere in one character: μ and A in a square.
Square mu F U+338C. Microfarad in one character: μ and F in a square.
Square mu G U+338D. Microgram in one character: μ and g in a square.
Square mu L U+3395. Microlitre in one character. Unicode defines it as μ and the script small l, U+2113.
Square mu M U+339B. Micrometre in one character, from the CJK Compatibility block. Unicode defines it as μ and m set in a square.
Square mu S U+33B2. Microsecond in one character: μ and s in a square.
Square mu V U+33B6. Microvolt in one character: μ and V in a square.
Square mu W U+33BC. Microwatt in one character: μ and W in a square.

Statistics and physics 10

Antimuon Made of U+03BC and U+207A. Mu with a superscript plus, U+207A: the muon's antiparticle.
Coefficient of kinetic friction Made of U+03BC and U+2096. Mu with a subscript k, U+2096, for surfaces that slide over each other. A coefficient of friction has no unit.
Coefficient of static friction Made of U+03BC and U+209B. Mu with a subscript s, U+209B, for surfaces at rest. It is usually larger than the kinetic coefficient.
Mean plus or minus one sigma Made of U+03BC, U+00B1 and U+03C3. One standard deviation either side of the mean. About 68% of a normal distribution lies inside it.
Mean plus or minus two sigma Made of U+03BC, U+00B1, U+0032 and U+03C3. Two standard deviations either side of the mean, which holds about 95% of a normal distribution.
Möbius function of n Made of U+03BC, U+0028, U+006E and U+0029. Mu, then n in brackets: the Möbius function of number theory.
Mu hat Made of U+03BC and U+0302. Mu with a combining circumflex, U+0302, which Unicode also names hat. In statistics a hat marks an estimate, so this is an estimated mean.
Mu sub x Made of U+03BC and U+2093. Mu with a subscript x, U+2093: the mean of a variable x.
Muon Made of U+03BC and U+207B. Mu with a superscript minus, U+207B. The muon is a lepton like the electron, far heavier, first seen in cosmic rays in 1936.
Sample mean x bar Made of U+0078 and U+0304. An x with a combining macron, U+0304. It is the mean of a sample, written this way to keep it apart from the population mean μ.

Other alphabets 5

Coptic capital letter mi U+2C98. Mi, the Coptic counterpart of mu. Added with the Coptic block in Unicode 4.1 (2005).
Coptic small letter mi U+2C99. The small letter of the Coptic pair.
Cyrillic capital letter em U+041C. Em, the Cyrillic letter that derives from mu, as the Latin M does. &Mcy; in HTML.
Cyrillic small letter em U+043C. Small em, &mcy; in HTML.
Phoenician letter mem U+1090C. Mem, the Phoenician letter that mu comes from. The Phoenicians named it after their word for water. Added in Unicode 5.0 (2006).

How this list was compiled: Names, and the code points they belong to, are checked against UnicodeData.txt, version 18.0.0 (https://www.unicode.org/Public/18.0.0/ucd/UnicodeData.txt), and printed in sentence case; its decomposition field is what says U+00B5 is a compatibility form of U+03BC, that a maths alphabet character is U+03BC or U+039C in a font, and that a squared unit is μ and a letter in a square (U+3395 with the script small l, U+2113). Cross-references and notes (hat, the preferred representation of the ohm sign is U+03A9, micro- and micron for the two katakana squares) are from NamesList.txt of the same version (https://www.unicode.org/Public/18.0.0/ucd/NamesList.txt); the version a character was added in is from DerivedAge.txt (https://www.unicode.org/Public/18.0.0/ucd/DerivedAge.txt), block names are from Blocks.txt, and the years are from https://www.unicode.org/history/publicationdates.html. Alt codes are from the code page 437 table (https://www.unicode.org/Public/MAPPINGS/VENDORS/MICSFT/PC/CP437.TXT), where byte E6, 230, is the micro sign and no byte is U+03BC, and from the code page 1252 table (https://www.unicode.org/Public/MAPPINGS/VENDORS/MICSFT/WINDOWS/CP1252.TXT), where the micro sign is byte B5, 181. Option keys were read from a U.S. keyboard layout: Option+M types U+00B5, and no key types U+03BC. HTML entity names are from https://html.spec.whatwg.org/entities.json, the HTML 4 name first where there is one, else the shortest. LaTeX macros are listed only when LaTeX's own fontdef.dtx (https://raw.githubusercontent.com/latex3/latex2e/develop/base/fontdef.dtx) or the kernel's text commands define them, matched to a code point through unicode-math-table.tex (https://github.com/latex3/unicode-math). The letter (twelfth, from Phoenician mem and the word for water, Latin M and Cyrillic em derive from it, the capital is not used because it looks like M, the Möbius function) is from https://en.wikipedia.org/wiki/Mu_%28letter%29. The prefix (a millionth, the Greek letter preferred by Unicode and the micro sign kept for legacy character sets, u as a stand-in under ISO 2955, DIN 66030 and BS 6430, mcg in medicine and the misreading of μg as mg) is from https://en.wikipedia.org/wiki/Micro-. Unit symbols, micron, and L or l for the litre are from https://en.wikipedia.org/wiki/International_System_of_Units and the Mu article. Mu nought: https://en.wikipedia.org/wiki/Vacuum_permeability. Friction, its subscripts, no unit, static usually larger: https://en.wikipedia.org/wiki/Friction. Muon and antimuon, lepton, 1936: https://en.wikipedia.org/wiki/Muon. The population mean as μ or μ with a subscript x and the sample mean as x bar: https://en.wikipedia.org/wiki/Mean. The hat as an estimate: https://en.wikipedia.org/wiki/Hat_notation. About 68% and 95%: https://en.wikipedia.org/wiki/68%E2%80%9395%E2%80%9399.7_rule. What is listed: every character Unicode names mu or micro in the Greek sense, the squared micro units, the letters the article ties to mu, and this site's own unit and formula strings, which are two to four characters in a row with nothing between them and always use U+03BC. Left out: characters of other scripts that merely have a syllable called mu (kana, Cherokee, Vai and others), the other Greek letters (each has its own page), and two phonetic letters that few fonts hold. The Start here group, the made rows and the order are this site's own choice. All sources were checked on 2026-09-19. Licence: own work (facts from the Unicode Character Database, Unicode License v3, and from Wikipedia, CC BY-SA 4.0, restated in our own words; aliases and notes marked as Unicode's are quoted from NamesList.txt, Copyright © 1991-2026 Unicode, Inc., https://www.unicode.org/license.txt)