Keyboard Alt Codes & Unicode Details
Need to type these symbols directly using physical keyboard shortcuts on Windows? Use the following Alt Code chart:
| Symbol | Name | Windows Alt Code | Unicode Hex | HTML Entity |
|---|---|---|---|---|
| ∞ | Infinity Symbol / Lemniscate | Alt + 236 | U+221E |
∞ |
| ♾️ | Permanent Infinity Emoji | Alt + 9854 | U+267E U+FE0F |
♾️ |
| Ꝏ | Latin Oo Infinity Loop | Alt + 42830 | U+A74E |
Ꝏ |
| ∝ | Proportional To Operator | Alt + 8733 | U+221D |
∝ |
What Is the Infinity Symbol?
The infinity symbol ∞ (U+221E) was introduced by the English mathematician John Wallis in 1655 to represent something without end. Today it means far more than maths: eternal love, lifelong friendship, endless possibilities and loyalty. That is why it is one of the most popular symbols for tattoos, couple bios and anniversary messages.
Unicode has several versions:
- ∞ – the standard text infinity (U+221E)
- ♾️ – the colourful infinity emoji (U+267E, officially “Permanent Paper Sign”)
- ⧜ and ⧝ – incomplete and tie-over infinity, used in maths
- ꝏ – a Latin letter (U+A74F) that looks like a joined double o, handy as a decorative alternative
How to Type ∞ on Any Device
- Windows: hold Alt and type 236 on the number pad (Alt + 236). This works in most programs because ∞ is in the original PC character set.
- Mac: press Option + 5.
- Microsoft Word: type
221Eand press Alt + X. - iPhone and Android: copy it from this page, or open the emoji keyboard and search “infinity” for ♾️.
- HTML: use
∞or∞.
Infinity Ideas for Bios, Couples and Tattoos
A ∞ B– two initials joined forever∞ ♡ ∞– endless loveforever & always ∞– a simple couple bio linebff ∞– friendship without end∞ 12.06.2024 ∞– an anniversary date
For a tattoo, you can type the words you want next to ∞ in our font generators and preview them in different styles before visiting the artist. Keep in mind that ∞ follows your font, while ♾️ always looks like the emoji style of the viewer’s phone, so the text version is better for designs that need a consistent look.
The Infinity Symbol in Maths and Science
In mathematics ∞ is not a number you can calculate with in the normal way. It describes a quantity that grows without limit. You will see it in limits (for example, the limit of 1/x as x approaches ∞ is 0), in intervals such as [0, ∞), and in sums of infinite series. Physicists and engineers use it for quantities that are too large to matter, and photographers see it on lens focus rings to mark focus at a great distance.
Related symbols include ℵ₀ (aleph-null), used for the size of the set of natural numbers, and ⧜, which marks an “incomplete infinity” in some notations. If you are writing equations, you can find many of these in our math symbols collection.
The figure-eight shape is also known as a lemniscate, from the Latin word for a ribbon, which is why the infinity symbol pairs so naturally with hearts and ribbons in jewellery and tattoo designs.
Frequently Asked Questions
Hold Alt and type 236 on the number pad, then release Alt to get ∞. In Microsoft Word you can also type 221E and press Alt + X.
Press Option + 5 to type ∞.
∞ (U+221E) is a text symbol that follows your font colour. ♾️ (U+267E) is a colourful emoji whose look depends on the device.
It stands for something without end: eternal love, lasting friendship, unlimited potential or, in maths, a value that keeps growing.
The English mathematician John Wallis introduced ∞ in 1655.
Use ∞ or ∞ in your HTML to display ∞.