Unit Symbols Collection

This page contains 96 unit symbols, covering SI units, imperial units, metric units, and specialized units for various disciplines. Unit symbols are essential in scientific calculations, engineering design, academic papers, and daily life. Each symbol represents a specific physical quantity and measurement standard.

Length Unit Symbols

mm is called the "Millimeter Symbol". It is a basic length unit for precision measurement and engineering drawing. Its Unicode is U+006D U+006D, the LaTeX command is \text{mm}, and the HTML entity is mm.
cm is called the "Centimeter Symbol". It is commonly used in daily life, 1cm = 10mm. Its Unicode is U+0063 U+006D, the LaTeX command is \text{cm}, and the HTML entity is cm.
m is called the "Meter Symbol". It is the SI base unit of length. Its Unicode is U+006D, the LaTeX command is \mathrm{m}, and the HTML entity is m.
km is called the "Kilometer Symbol". It is used for geographical distance measurement, 1km = 1000m. Its Unicode is U+006B U+006D, the LaTeX command is \text{km}, and the HTML entity is km.
in is called the "Inch Symbol". It is an imperial length unit, 1in = 25.4mm. Its Unicode is U+0069 U+006E, the LaTeX command is \text{in}, and the HTML entity is in.
ft is called the "Foot Symbol". It is an imperial unit, 1ft = 12in. Its Unicode is U+0066 U+0074, the LaTeX command is \text{ft}, and the HTML entity is ft.
yd is called the "Yard Symbol". It is used for sports field length, 1yd = 3ft. Its Unicode is U+0079 U+0064, the LaTeX command is \text{yd}, and the HTML entity is yd.
mi is called the "Mile Symbol". It is used for road distance, 1mi = 1609.344m. Its Unicode is U+006D U+0069, the LaTeX command is \text{mi}, and the HTML entity is mi.
nm is called the "Nanometer Symbol". It is a micro-scale unit for semiconductors and optics. Its Unicode is U+006E U+006D, the LaTeX command is \text{nm}, and the HTML entity is nm.
Å is called the "Angstrom Symbol". It is used in atomic physics and crystallography, 1Å = 0.1nm. Its Unicode is U+00C5, the LaTeX command is \AA, and the HTML entity is Å.
μ is called the "Micrometer Symbol". It represents one millionth of a meter, 1μm = 10⁻⁶m. Its Unicode is U+03BC, the LaTeX command is \mu, and the HTML entity is µ.
mil is called the "Mil Symbol". It is an imperial length unit for circuit boards, 1mil = 0.001in. Its Unicode is U+006D U+0069 U+006C, the LaTeX command is \text{mil}, and the HTML entity is mil.

Area Unit Symbols

mm² is called the "Square Millimeter Symbol". It is used for micro area measurement. Its Unicode is U+006D U+006D U+00B2, the LaTeX command is \text{mm}^2, and the HTML entity is mm².
cm² is called the "Square Centimeter Symbol". It is a common area unit for paper and graphics. Its Unicode is U+0063 U+006D U+00B2, the LaTeX command is \text{cm}^2, and the HTML entity is cm².
m² is called the "Square Meter Symbol". It is the international standard area unit for housing and land. Its Unicode is U+006D U+00B2, the LaTeX command is \text{m}^2, and the HTML entity is m².
km² is called the "Square Kilometer Symbol". It is used for geographical area measurement. Its Unicode is U+006B U+006D U+00B2, the LaTeX command is \text{km}^2, and the HTML entity is km².
in² is called the "Square Inch Symbol". It is an imperial area unit for display screens. Its Unicode is U+0069 U+006E U+00B2, the LaTeX command is \text{in}^2, and the HTML entity is in².
ft² is called the "Square Foot Symbol". It is used for housing area in English-speaking countries. Its Unicode is U+0066 U+0074 U+00B2, the LaTeX command is \text{ft}^2, and the HTML entity is ft².
yd² is called the "Square Yard Symbol". It is used in specific engineering fields. Its Unicode is U+0079 U+0064 U+00B2, the LaTeX command is \text{yd}^2, and the HTML entity is yd².
ac is called the "Acre Symbol". It is a land area unit, 1ac = 4046.86m². Its Unicode is U+0061 U+0063, the LaTeX command is \text{ac}, and the HTML entity is ac.

Volume Unit Symbols

mm³ is called the "Cubic Millimeter Symbol". It is used for micro volume measurement. Its Unicode is U+006D U+006D U+00B3, the LaTeX command is \text{mm}^3, and the HTML entity is mm³.
cm³ is called the "Cubic Centimeter Symbol". It is also known as milliliter for laboratory use. Its Unicode is U+0063 U+006D U+00B3, the LaTeX command is \text{cm}^3, and the HTML entity is cm³.
m³ is called the "Cubic Meter Symbol". It is the international volume unit for gas and water tanks. Its Unicode is U+006D U+00B3, the LaTeX command is \text{m}^3, and the HTML entity is m³.
in³ is called the "Cubic Inch Symbol". It is an imperial volume unit for engine displacement. Its Unicode is U+0069 U+006E U+00B3, the LaTeX command is \text{in}^3, and the HTML entity is in³.
ft³ is called the "Cubic Foot Symbol". It is used for housing and refrigerator capacity. Its Unicode is U+0066 U+0074 U+00B3, the LaTeX command is \text{ft}^3, and the HTML entity is ft³.
yd³ is called the "Cubic Yard Symbol". It is used for construction concrete measurement. Its Unicode is U+0079 U+0064 U+00B3, the LaTeX command is \text{yd}^3, and the HTML entity is yd³.
L is called the "Liter Symbol". It is a volume unit, 1L = 1dm³. Its Unicode is U+004C, the LaTeX command is \mathrm{L}, and the HTML entity is L.
mL is called the "Milliliter Symbol". It is used for medicine and beverage volume, 1mL = 1cm³. Its Unicode is U+006D U+004C, the LaTeX command is \text{mL}, and the HTML entity is mL.
gal is called the "Gallon Symbol". It is an imperial volume unit with US and UK variants. Its Unicode is U+0067 U+0061 U+006C, the LaTeX command is \text{gal}, and the HTML entity is gal.
qt is called the "Quart Symbol". It is an imperial volume unit, 1qt = 1/4gal. Its Unicode is U+0071 U+0074, the LaTeX command is \text{qt}, and the HTML entity is qt.

Mass Unit Symbols

mg is called the "Milligram Symbol". It is used for medicine dosage, 1mg = 10⁻³g. Its Unicode is U+006D U+0067, the LaTeX command is \text{mg}, and the HTML entity is mg.
g is called the "Gram Symbol". It is the basic mass unit. Its Unicode is U+0067, the LaTeX command is \mathrm{g}, and the HTML entity is g.
kg is called the "Kilogram Symbol". It is the SI base unit of mass. Its Unicode is U+006B U+0067, the LaTeX command is \text{kg}, and the HTML entity is kg.
t is called the "Ton Symbol". It is a metric ton, 1t = 1000kg. Its Unicode is U+0074, the LaTeX command is \text{t}, and the HTML entity is t.
oz is called the "Ounce Symbol". It is an imperial mass unit for precious metals. Its Unicode is U+006F U+007A, the LaTeX command is \text{oz}, and the HTML entity is oz.
lb is called the "Pound Symbol". It is an imperial mass unit, 1lb ≈ 0.4536kg. Its Unicode is U+006C U+0062, the LaTeX command is \text{lb}, and the HTML entity is lb.
st is called the "Stone Symbol". It is used for body weight in the UK, 1st = 14lb. Its Unicode is U+0073 U+0074, the LaTeX command is \text{st}, and the HTML entity is st.
ct is called the "Carat Symbol". It is a gemstone mass unit, 1ct = 0.2g. Its Unicode is U+0063 U+0074, the LaTeX command is \text{ct}, and the HTML entity is ct.
u is called the "Atomic Mass Unit Symbol". It is used in atomic physics, 1u ≈ 1.6605×10⁻²⁷kg. Its Unicode is U+0075, the LaTeX command is \mathrm{u}, and the HTML entity is u.
amu is called the "Atomic Mass Unit Symbol". It is the traditional form of atomic mass unit. Its Unicode is U+0061 U+006D U+0075, the LaTeX command is \text{amu}, and the HTML entity is amu.

Time Unit Symbols

s is called the "Second Symbol". It is the SI base unit of time. Its Unicode is U+0073, the LaTeX command is \mathrm{s}, and the HTML entity is s.
ms is called the "Millisecond Symbol". It is used for computer response time, 1ms = 10⁻³s. Its Unicode is U+006D U+0073, the LaTeX command is \text{ms}, and the HTML entity is ms.
μs is called the "Microsecond Symbol". It is used for electronic signal delay, 1μs = 10⁻⁶s. Its Unicode is U+03BC U+0073, the LaTeX command is \mu\text{s}, and the HTML entity is µs.
ns is called the "Nanosecond Symbol". It is used for CPU clock cycles, 1ns = 10⁻⁹s. Its Unicode is U+006E U+0073, the LaTeX command is \text{ns}, and the HTML entity is ns.
min is called the "Minute Symbol". It is a time unit, 1min = 60s. Its Unicode is U+006D U+0069 U+006E, the LaTeX command is \text{min}, and the HTML entity is min.
h is called the "Hour Symbol". It is a time unit, 1h = 3600s. Its Unicode is U+0068, the LaTeX command is \mathrm{h}, and the HTML entity is h.
d is called the "Day Symbol". It is a time unit, 1d = 86400s. Its Unicode is U+0064, the LaTeX command is \mathrm{d}, and the HTML entity is d.
wk is called the "Week Symbol". It is a time unit, 1wk = 7d. Its Unicode is U+0077 U+006B, the LaTeX command is \text{wk}, and the HTML entity is wk.
mo is called the "Month Symbol". It is an approximate time unit. Its Unicode is U+006D U+006F, the LaTeX command is \text{mo}, and the HTML entity is mo.
yr is called the "Year Symbol". It is an astronomical year unit. Its Unicode is U+0079 U+0072, the LaTeX command is \text{yr}, and the HTML entity is yr.
dec is called the "Decade Symbol". It represents a ten-year period. Its Unicode is U+0064 U+0065 U+0063, the LaTeX command is \text{dec}, and the HTML entity is dec.
cen is called the "Century Symbol". It represents a 100-year period. Its Unicode is U+0063 U+0065 U+006E, the LaTeX command is \text{cen}, and the HTML entity is cen.

Temperature Unit Symbols

°C is called the "Celsius Symbol". It is the most common temperature unit. Its Unicode is U+00B0 U+0043, the LaTeX command is $^\circ$C, and the HTML entity is °C.
°F is called the "Fahrenheit Symbol". It is mainly used in the United States. Its Unicode is U+00B0 U+0046, the LaTeX command is $^\circ$F, and the HTML entity is °F.
K is called the "Kelvin Symbol". It is the SI base unit of temperature. Its Unicode is U+004B, the LaTeX command is \mathrm{K}, and the HTML entity is K.
°Ré is called the "Réaumur Symbol". It is a historical temperature unit. Its Unicode is U+00B0 U+0052 U+00E9, the LaTeX command is $^\circ$R\acute{e}, and the HTML entity is °Ré.
°Rø is called the "Rømer Symbol". It is a historical temperature scale. Its Unicode is U+00B0 U+0052 U+00F8, the LaTeX command is $^\circ$R\o, and the HTML entity is °Rø.
°De is called the "Delisle Symbol". It is a historical temperature scale. Its Unicode is U+00B0 U+0044 U+0065, the LaTeX command is $^\circ$De, and the HTML entity is °De.

Angle Unit Symbols

° is called the "Degree Symbol". It is the basic angle unit, 1 circle = 360°. Its Unicode is U+00B0, the LaTeX command is ^\circ, and the HTML entity is °.
′ is called the "Minute of Arc Symbol". It is used in angular measurement, 1° = 60′. Its Unicode is U+2032, the LaTeX command is ^\prime, and the HTML entity is ′.
″ is called the "Second of Arc Symbol". It is used in precise angular measurement, 1′ = 60″. Its Unicode is U+2033, the LaTeX command is ^{\prime\prime}, and the HTML entity is ″.
rad is called the "Radian Symbol". It is the SI unit of angle. Its Unicode is U+0072 U+0061 U+0064, the LaTeX command is \text{rad}, and the HTML entity is rad.
grad is called the "Gradian Symbol". It is also known as gon, 1 circle = 400 grad. Its Unicode is U+0067 U+0072 U+0061 U+0064, the LaTeX command is \text{grad}, and the HTML entity is grad.
rev is called the "Revolution Symbol". It represents a full rotation. Its Unicode is U+0072 U+0065 U+0076, the LaTeX command is \text{rev}, and the HTML entity is rev.
∠ is called the "Angle Symbol". It represents a geometric angle. Its Unicode is U+2220, the LaTeX command is \angle, and the HTML entity is ∠.
∡ is called the "Measured Angle Symbol". It represents a directed angle. Its Unicode is U+2221, the LaTeX command is \measuredangle, and the HTML entity is ∡.

Electric Unit Symbols

V is called the "Volt Symbol". It is the unit of voltage. Its Unicode is U+0056, the LaTeX command is \mathrm{V}, and the HTML entity is V.
A is called the "Ampere Symbol". It is the unit of electric current. Its Unicode is U+0041, the LaTeX command is \mathrm{A}, and the HTML entity is A.
W is called the "Watt Symbol". It is the unit of power. Its Unicode is U+0057, the LaTeX command is \mathrm{W}, and the HTML entity is W.
Ω is called the "Ohm Symbol". It is the unit of electrical resistance. Its Unicode is U+03A9, the LaTeX command is \Omega, and the HTML entity is Ω.
Hz is called the "Hertz Symbol". It is the unit of frequency. Its Unicode is U+0048 U+007A, the LaTeX command is \text{Hz}, and the HTML entity is Hz.
F is called the "Farad Symbol". It is the unit of capacitance. Its Unicode is U+0046, the LaTeX command is \mathrm{F}, and the HTML entity is F.
C is called the "Coulomb Symbol". It is the unit of electric charge. Its Unicode is U+0043, the LaTeX command is \mathrm{C}, and the HTML entity is C.
J is called the "Joule Symbol". It is the unit of energy. Its Unicode is U+004A, the LaTeX command is \mathrm{J}, and the HTML entity is J.
N is called the "Newton Symbol". It is the unit of force. Its Unicode is U+004E, the LaTeX command is \mathrm{N}, and the HTML entity is N.
Pa is called the "Pascal Symbol". It is the unit of pressure. Its Unicode is U+0050 U+0061, the LaTeX command is \text{Pa}, and the HTML entity is Pa.
T is called the "Tesla Symbol". It is the unit of magnetic flux density. Its Unicode is U+0054, the LaTeX command is \mathrm{T}, and the HTML entity is T.
Wb is called the "Weber Symbol". It is the unit of magnetic flux. Its Unicode is U+0057 U+0062, the LaTeX command is \text{Wb}, and the HTML entity is Wb.

Information Unit Symbols

b is called the "Bit Symbol". It is the smallest unit of information. Its Unicode is U+0062, the LaTeX command is \text{b}, and the HTML entity is b.
B is called the "Byte Symbol". It is a basic storage unit, 1B = 8b. Its Unicode is U+0042, the LaTeX command is \text{B}, and the HTML entity is B.
KB is called the "Kilobyte Symbol". It is a digital storage unit. Its Unicode is U+004B U+0042, the LaTeX command is \text{KB}, and the HTML entity is KB.
MB is called the "Megabyte Symbol". It is a digital storage unit. Its Unicode is U+004D U+0042, the LaTeX command is \text{MB}, and the HTML entity is MB.
GB is called the "Gigabyte Symbol". It is a digital storage unit. Its Unicode is U+0047 U+0042, the LaTeX command is \text{GB}, and the HTML entity is GB.
TB is called the "Terabyte Symbol". It is a digital storage unit. Its Unicode is U+0054 U+0042, the LaTeX command is \text{TB}, and the HTML entity is TB.
PB is called the "Petabyte Symbol". It is a digital storage unit. Its Unicode is U+0050 U+0042, the LaTeX command is \text{PB}, and the HTML entity is PB.
EB is called the "Exabyte Symbol". It is a digital storage unit. Its Unicode is U+0045 U+0042, the LaTeX command is \text{EB}, and the HTML entity is EB.

Other Common Unit Symbols

% is called the "Percent Symbol". It represents one part per hundred. Its Unicode is U+0025, the LaTeX command is \%, and the HTML entity is %.
‰ is called the "Permille Symbol". It represents one part per thousand. Its Unicode is U+2030, the LaTeX command is \textperthousand, and the HTML entity is ‰.
‱ is called the "Per Ten Thousand Symbol". It represents one part per ten thousand. Its Unicode is U+2031, the LaTeX command is \textpertenthousand, and the HTML entity is ‰‰.
ppm is called the "Parts Per Million Symbol". It is used for concentration measurement. Its Unicode is U+0070 U+0070 U+006D, the LaTeX command is \text{ppm}, and the HTML entity is ppm.
ppb is called the "Parts Per Billion Symbol". It is used for trace concentration. Its Unicode is U+0070 U+0070 U+0062, the LaTeX command is \text{ppb}, and the HTML entity is ppb.
mol is called the "Mole Symbol". It is the unit of amount of substance. Its Unicode is U+006D U+006F U+006C, the LaTeX command is \text{mol}, and the HTML entity is mol.
cd is called the "Candela Symbol". It is the unit of luminous intensity. Its Unicode is U+0063 U+0064, the LaTeX command is \text{cd}, and the HTML entity is cd.
lm is called the "Lumen Symbol". It is the unit of luminous flux. Its Unicode is U+006C U+006D, the LaTeX command is \text{lm}, and the HTML entity is lm.
lx is called the "Lux Symbol". It is the unit of illuminance. Its Unicode is U+006C U+0078, the LaTeX command is \text{lx}, and the HTML entity is lx.
Gy is called the "Gray Symbol". It is the unit of absorbed dose. Its Unicode is U+0047 U+0079, the LaTeX command is \text{Gy}, and the HTML entity is Gy.

Usage Guidelines

1. Use upright (roman) characters for unit symbols in scientific documents to distinguish them from variables.
2. No space between prefixes and unit symbols (e.g., km, mg).
3. Use special symbols for degree, minute, and second of angle instead of letter approximations.
4. Percentage symbols should follow numbers directly without space.
5. Use IEC standard prefixes (KiB, MiB) for binary information units to avoid confusion.
6. No degree symbol for Kelvin temperature unit.
7. Use the siunitx LaTeX package for professional unit formatting.
8. Ensure proper font support for special symbols like Å, μ, and Ω for correct SVG/PNG rendering.

Tips

Click any symbol card to view its details. Click any item in the detail panel to copy the corresponding value with one click. Each symbol can generate SVG vector source code or be downloaded as a 512×512px transparent PNG image. For academic papers and technical reports, use LaTeX commands with the siunitx package for optimal formatting.