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Infinity Symbol (∞)

The infinity symbol (∞) is the sideways figure-eight that stands for something without end — in maths, and in tattoos and jewellery everywhere.

∞

Infinity · U+221E · Math Symbols

Click the symbol or the button to copy it, then paste it anywhere — documents, messages, bios and code.

Infinity Symbol codes

Code	Value
Unicode code point	`U+221E`
Unicode name	`Infinity`
HTML named entity	`∞`
HTML decimal	`∞`
HTML hex	`∞`
CSS content code	`\221E`
JavaScript / JSON	`\u221E`
Windows Alt code	No standard Alt code — copy it from the card above
LaTeX	`\infty`

Infinity Symbol variants (3)

3 related glyphs — click any tile to copy it. Tiles with a page open that symbol's own page.

♾Permanent Paper Sign∝Proportional To⧜Incomplete Infinity

Meaning & usage

∞ is a loop with no beginning and no end, which makes it the perfect picture of endlessness. Mathematicians use it for unbounded values and limits; everyone else uses it for forever — infinity tattoos, wedding rings, 'love you ∞' messages and the logos of endless-scroll apps.

The shape is a lemniscate, a curve studied since ancient geometry, and John Wallis gave it to maths in 1655. It is often confused with a sideways 8, but the true symbol is a separate Unicode character.

Examples in use

To infinity and beyond!
Love you ∞
As x → ∞ in a limits problem

How to type the infinity symbol

Windows

There is no Alt code or direct key for ∞. In Microsoft Word, type 221E and press Alt+X to convert it. Everywhere else, click the Copy button at the top of this page and paste it (Ctrl+V) — that always works.

Mac

There is no Option-key shortcut for ∞ on a Mac. Open the Character Viewer with Control+Command+Space, search for "Infinity Symbol", and double-click to insert — or copy it from this page.

iPhone & Android

Most phone keyboards have no built-in key for ∞. Open this page on your phone, tap Copy, then paste it into your message or bio. (On Android, Gboard's emoji search finds some symbols by name.)

Linux

Press Ctrl+Shift+U, type 221e and press Enter (works in most GTK apps and terminals with IBus). Or copy it from this page.

Frequently asked questions

How do I type the infinity symbol?

There is no standard Alt code or keyboard key for ∞. Copy it from this page — pasting works in documents, chats and social bios.

What is the difference between ∞ and ♾️?

The sign ∞ (U+221E) is the mathematical infinity symbol and renders as clean text. ♾️ (U+267E) is the 'permanent paper' recycling sign that many phones display as a colourful emoji — for text, ∞ is the safer choice.

What does an infinity tattoo mean?

It usually symbolises forever — endless love, friendship or a bond with no end — especially when combined with names, hearts or feathers.

Why does ∞ sometimes show as a box or question mark?

The box (called tofu) means the device or font viewing it has no drawing for U+221E (Infinity). The character itself is fine — try a different font or a newer device, or use one of the variants on this page.

Is the Infinity Symbol free to use?

Yes. ∞ is a standard Unicode text character published in the Unicode Character Database. You may use it in personal and commercial documents, designs and products without permission or payment.