Copy ∞ in one tap, or pick from 37 rows: the emoji, −∞, x→∞, ℵ₀ and look-alikes, all with codes.
Infinity Symbol Copy and Paste
∞InfinityU+221EReady to copy
37 infinity characters and strings. Tap any value to copy it.
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37 infinity characters and strings. 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+221E. The infinity sign of maths, which John Wallis introduced in 1655 without saying why he chose it. Alt+236 on a number pad, ∞ in HTML, \infty in LaTeX. In Unicode since version 1.1 (1993).
U+267E U+FE0F. The infinity emoji: ∞ in a circle, plus U+FE0F, a selector that asks for the colour drawing. The emoji list calls it infinity. Unicode names it for its first job, marking acid-free paper.
U+267E U+FE0E. The same circled ∞ plus U+FE0E, a selector that asks for plain text, so it takes the colour of the words around it. Added in version 4.1 (2005).
U+29DC. An infinity with a gap in its right loop. Unicode's note gives its source, the ISOtech entity set, and HTML still calls it ⧜. Added in version 3.2 (2002).
U+29DD. An infinity under a curved tie. The HTML name really is spelled ⧝. Fewer fonts draw this one than the plain ∞.
U+29DE. An infinity negated by an upright bar through the middle. ⧞ in HTML. The divorce symbol ⚮ is a different character that looks much the same.
Made of U+002B and U+221E. Positive infinity, greater than every real number. Where the meaning is clear the plus is usually dropped.
Made of U+2212 and U+221E. Negative infinity, lower than every real number. It is written with U+2212 Minus sign, not the hyphen on the keyboard.
Made of U+0078, U+2192 and U+221E. The line under lim. In LaTeX it is x \to \infty, and \to prints the same arrow as \rightarrow.
Made of U+2135 and U+2080. The size of the set of natural numbers, written with a subscript zero. Georg Cantor's alephs count the sizes of sets, which the ∞ of calculus does not.
Made of U+00B1 and U+221E. Both ends of the extended number line in one string. ± is Alt+241 on a number pad.
Made of U+006E, U+2192 and U+221E. The same limit for a sequence, where the counter is usually n.
Made of U+221E and U+002F. One of the seven indeterminate forms: a limit of this shape can come out as anything. Typed with the plain slash.
Made of U+221E and U+2212. Another indeterminate form. In the extended real numbers it is usually left undefined.
Made of U+0030, U+00D7 and U+221E. An indeterminate form, typed with the real multiplication sign and not the letter x. In measure theory it is often defined as 0.
Made of U+221E and U+2070. An indeterminate form, written with U+2070 Superscript zero. Of the seven forms only 1 to the power ∞ cannot be typed this way, because Unicode has no superscript infinity.
U+2135. The Hebrew letter alef as a maths symbol, and Cantor's letter for the size of an infinite set. \aleph in LaTeX, ℵ in HTML. It needs a subscript to name one size.
Made of U+2135 and U+2081. The next size after aleph-null. Whether it is also the size of the real numbers is the continuum hypothesis, which the usual axioms can neither prove nor refute.
U+2136. The second Hebrew letter as a maths symbol. The beth numbers start at aleph-null, and each next one is 2 to the power of the last. \beth in LaTeX needs the amssymb package.
U+1D520. A Fraktur c, the usual sign for the size of the set of real numbers, which Cantor proved in 1874 to be larger than aleph-null. It equals beth-one. 𝔠 in HTML.
U+0038. An ∞ is drawn like this digit lying down, and livestock branding calls it a lazy eight. The real sign has its own code point, so copy that one.
U+221D. An infinity with its right side left open. It means is proportional to, as in y ∝ x. \propto in LaTeX, ∝ in HTML.
U+2180. An old Roman way to write 1,000. One guess at where ∞ came from is a variant of this numeral.
U+03C9. The other guess at the origin of ∞: a variant of ω, the last letter of the Greek alphabet. \omega in LaTeX, ω in HTML.
U+22C8. Two triangles tip to tip, so an infinity with straight sides. \bowtie in LaTeX, ⋈ in HTML.
U+223E. An S lying on its side with both ends open. Unicode's note: most positive. ∾ in HTML.
U+26AD. Two linked rings, filed by Unicode under Genealogical symbols. Its own cross-reference points from here to ∞. \textmarried in LaTeX text mode.
U+26AE. The linked rings with a bar through them. Unicode cross-references it to ⧞, Infinity negated with vertical bar.
U+A74F. A letter, not a sign. It is drawn as two joined o's, which passes for ∞ at small sizes. Added in version 5.1 (2008).
U+A74E. The capital of ꝏ, from the same Latin Extended-D block. A letter for the start of a word, not a maths sign.
U+A699. The Cyrillic twin of ꝏ, and Unicode cross-references the two. Added in version 7.0 (2014), so fewer fonts have it.
U+A698. The capital of ꚙ. A letter from Cyrillic Extended-B, not a maths sign.
U+058D. An eternity sign and not an infinity sign. Unicode files it under Religious symbols in the Armenian block. Added in version 7.0 (2014).
U+058E. The same eternity sign turning the other way. Both arrived together in version 7.0.
U+1AB2. A combining mark: it sits above the letter typed before it. Unicode files it under Used in German dialectology. Added in Unicode 7.0 (2014).
U+2BF9. Chess notation. Unicode's note: with compensation for the material. Added in Unicode 11.0 (2018).
U+2B96. The partner of U+2BF9. Unicode says the two are sometimes used contrastively, the place of the ∞ showing which side has the compensation. Added in version 17.0 (2025).
The infinity symbol is ∞, Infinity, U+221E. The 37 rows add the circled emoji ♾️, plus and minus infinity, limits such as x→∞, Cantor's alephs for the sizes of infinity, and labelled look-alikes such as ∝ and ⋈.
Read the full guide
Signs that only look like ∞
∝, Proportional to, is an infinity with its right side left open, and it means is proportional to. ⋈ is a bowtie with straight sides. ꝏ is a letter drawn as two joined o's. ֍ is the Armenian eternity sign, not an infinity. ⧜, ⧝ and ⧞ are true variants: incomplete, under a tie, and negated by an upright bar.
Sizes of infinity
ℵ₀, aleph-null, is the size of the set of natural numbers, and ℵ₁ is the next size. 𝔠, a Fraktur c, is the size of the set of real numbers, which Cantor proved larger in 1874. ∞/∞, ∞−∞, 0×∞ and ∞⁰ are four of the seven indeterminate forms: a limit of that shape can come out as anything.
Tips
For minus infinity copy the row Minus infinity: it holds U+2212, the real minus sign, not the keyboard hyphen.
If ♾️ arrives in colour where you wanted an outline, copy Permanent paper sign, text style: the same character plus U+FE0E.
Unicode has no superscript infinity, so 1 to the power ∞ cannot be typed on one line. In LaTeX, write 1^\infty.
Questions and answers
How do I type the infinity symbol on a keyboard?
On Windows, switch Num Lock on, hold Alt and type 236 on the number pad. In Word, type 221E, then press Alt and X. On a Mac with the U.S. layout, press Option and 5. On Linux, press Compose, then 8 twice.
What is the infinity symbol in HTML and LaTeX?
∞ is the named entity, and ∞ or ∞ is the numeric form. In LaTeX, \infty prints ∞ in maths mode with no package, as does \aleph, while \beth needs amssymb. HTML names 11 of the 37 rows and LaTeX has a macro for 8.
Who invented the infinity symbol?
John Wallis is credited with introducing ∞ in its mathematical meaning in 1655, and he never explained the choice. The two usual guesses are a variant of ↀ, an old Roman numeral for 1,000, and a variant of the Greek letter ω.
Is the infinity emoji the same character as ∞?
No. ∞ is U+221E, a maths operator from 1993. ♾️ is U+267E, Permanent paper sign, a circled infinity made to mark acid-free paper. The emoji list added it in its version 11.0 under the name infinity.
ℵ₀Aleph-nullMade of U+2135 and U+2080. The size of the set of natural numbers, written with a subscript zero. Georg Cantor's alephs count the sizes of sets, which the ∞ of calculus does not.
⧜Incomplete infinityU+29DC. An infinity with a gap in its right loop. Unicode's note gives its source, the ISOtech entity set, and HTML still calls it ⧜. Added in version 3.2 (2002).
∞InfinityU+221E. The infinity sign of maths, which John Wallis introduced in 1655 without saying why he chose it. Alt+236 on a number pad, ∞ in HTML, \infty in LaTeX. In Unicode since version 1.1 (1993).
⧞Infinity negated with vertical barU+29DE. An infinity negated by an upright bar through the middle. ⧞ in HTML. The divorce symbol ⚮ is a different character that looks much the same.
−∞Minus infinityMade of U+2212 and U+221E. Negative infinity, lower than every real number. It is written with U+2212 Minus sign, not the hyphen on the keyboard.
♾️Permanent paper sign, emoji styleU+267E U+FE0F. The infinity emoji: ∞ in a circle, plus U+FE0F, a selector that asks for the colour drawing. The emoji list calls it infinity. Unicode names it for its first job, marking acid-free paper.
Show all 37 infinity characters and strings (31 more)
Start here, continued
♾︎Permanent paper sign, text styleU+267E U+FE0E. The same circled ∞ plus U+FE0E, a selector that asks for plain text, so it takes the colour of the words around it. Added in version 4.1 (2005).
+∞Plus infinityMade of U+002B and U+221E. Positive infinity, greater than every real number. Where the meaning is clear the plus is usually dropped.
⧝Tie over infinityU+29DD. An infinity under a curved tie. The HTML name really is spelled ⧝. Fewer fonts draw this one than the plain ∞.
x→∞x tends to infinityMade of U+0078, U+2192 and U+221E. The line under lim. In LaTeX it is x \to \infty, and \to prints the same arrow as \rightarrow.
With a sign or in a sum 6
∞−∞Infinity minus infinityMade of U+221E and U+2212. Another indeterminate form. In the extended real numbers it is usually left undefined.
∞/∞Infinity over infinityMade of U+221E and U+002F. One of the seven indeterminate forms: a limit of this shape can come out as anything. Typed with the plain slash.
∞⁰Infinity to the power zeroMade of U+221E and U+2070. An indeterminate form, written with U+2070 Superscript zero. Of the seven forms only 1 to the power ∞ cannot be typed this way, because Unicode has no superscript infinity.
n→∞n tends to infinityMade of U+006E, U+2192 and U+221E. The same limit for a sequence, where the counter is usually n.
±∞Plus or minus infinityMade of U+00B1 and U+221E. Both ends of the extended number line in one string. ± is Alt+241 on a number pad.
0×∞Zero times infinityMade of U+0030, U+00D7 and U+221E. An indeterminate form, typed with the real multiplication sign and not the letter x. In measure theory it is often defined as 0.
Sizes of infinity 4
ℵAlef symbolU+2135. The Hebrew letter alef as a maths symbol, and Cantor's letter for the size of an infinite set. \aleph in LaTeX, ℵ in HTML. It needs a subscript to name one size.
ℵ₁Aleph-oneMade of U+2135 and U+2081. The next size after aleph-null. Whether it is also the size of the real numbers is the continuum hypothesis, which the usual axioms can neither prove nor refute.
ℶBet symbolU+2136. The second Hebrew letter as a maths symbol. The beth numbers start at aleph-null, and each next one is 2 to the power of the last. \beth in LaTeX needs the amssymb package.
𝔠Mathematical fraktur small cU+1D520. A Fraktur c, the usual sign for the size of the set of real numbers, which Cantor proved in 1874 to be larger than aleph-null. It equals beth-one. 𝔠 in HTML.
Look-alikes 14
⋈BowtieU+22C8. Two triangles tip to tip, so an infinity with straight sides. \bowtie in LaTeX, ⋈ in HTML.
ꚘCyrillic capital letter double OU+A698. The capital of ꚙ. A letter from Cyrillic Extended-B, not a maths sign.
ꚙCyrillic small letter double oU+A699. The Cyrillic twin of ꝏ, and Unicode cross-references the two. Added in version 7.0 (2014), so fewer fonts have it.
8Digit eightU+0038. An ∞ is drawn like this digit lying down, and livestock branding calls it a lazy eight. The real sign has its own code point, so copy that one.
⚮Divorce symbolU+26AE. The linked rings with a bar through them. Unicode cross-references it to ⧞, Infinity negated with vertical bar.
ωGreek small letter omegaU+03C9. The other guess at the origin of ∞: a variant of ω, the last letter of the Greek alphabet. \omega in LaTeX, ω in HTML.
∾Inverted lazy SU+223E. An S lying on its side with both ends open. Unicode's note: most positive. ∾ in HTML.
ꝎLatin capital letter ooU+A74E. The capital of ꝏ, from the same Latin Extended-D block. A letter for the start of a word, not a maths sign.
ꝏLatin small letter ooU+A74F. A letter, not a sign. It is drawn as two joined o's, which passes for ∞ at small sizes. Added in version 5.1 (2008).
֎Left-facing Armenian eternity signU+058E. The same eternity sign turning the other way. Both arrived together in version 7.0.
⚭Marriage symbolU+26AD. Two linked rings, filed by Unicode under Genealogical symbols. Its own cross-reference points from here to ∞. \textmarried in LaTeX text mode.
∝Proportional toU+221D. An infinity with its right side left open. It means is proportional to, as in y ∝ x. \propto in LaTeX, ∝ in HTML.
֍Right-facing Armenian eternity signU+058D. An eternity sign and not an infinity sign. Unicode files it under Religious symbols in the Armenian block. Added in version 7.0 (2014).
ↀRoman numeral one thousand C DU+2180. An old Roman way to write 1,000. One guess at where ∞ came from is a variant of this numeral.
May be an empty box 3
᪲Combining infinityU+1AB2. A combining mark: it sits above the letter typed before it. Unicode files it under Used in German dialectology. Added in Unicode 7.0 (2014).
Equals sign with infinity aboveU+2B96. The partner of U+2BF9. Unicode says the two are sometimes used contrastively, the place of the ∞ showing which side has the compensation. Added in version 17.0 (2025).
⯹Equals sign with infinity belowU+2BF9. Chess notation. Unicode's note: with compensation for the material. Added in Unicode 11.0 (2018).