How to type the infinity symbol on Android
To type the infinity symbol on Android, tap ?123, then switch to the =\< symbols layout where ∞ sits in the middle row on Gboard. You can also pin ∞ to your clipboard to insert the infinity symbol on Android whenever doing maths or creative writing.
Quick answer
Tap ?123 → tap =\< → locate and tap ∞.
Step by step
Open the numeric keyboard
Tap the ?123 button in the lower-left corner of Gboard or Samsung Keyboard.
Open the secondary symbols
Tap the =\< button situated above the ABC key to display advanced mathematical symbols.
Tap the infinity symbol
Locate the infinity symbol ∞ (in the middle or bottom row of Gboard) and tap it to insert.
Alternative: save to dictionary
Optionally, add ∞ to your personal dictionary with shortcut “inf” for instant typing in any text box.
Finding ∞ directly on Gboard and Samsung keyboards
Unlike iOS, which omits the character from its default screens, Google Gboard on Android includes the mathematical infinity symbol ∞ (Unicode U+221E) directly on its secondary symbols layout. To access it, tap the ?123 key in the lower-left corner to open numbers, then tap the =\< key located directly above ABC. On this extended symbol layout, the infinity sign ∞ is readily available, typically located in the middle row alongside mathematical comparison operators.
On Samsung devices running Samsung Keyboard, tap the !#1 button, then tap the 1/2 button to toggle to the second page of symbols where ∞ is displayed. Tapping the key inserts the symbol immediately into your message, note, or document without needing web lookups.
Pinning ∞ to Gboard clipboard history
If you switch between mathematical symbols frequently while working on problem sets or coding projects, Gboard’s clipboard manager provides a handy holding area. Copy ∞ from our infinity symbol page, open any text box, tap the clipboard icon on the keyboard toolbar, find ∞ under recent clips, and long-press to choose Pin. Pinned items stay permanently saved in your clipboard drawer, ready for rapid selection.
Explore related operators such as roots, integrals, and summation signs in our math symbols collection, which compiles every essential technical character.
Setting up a personal dictionary shortcut
For the fastest typing experience, configure a personal dictionary shortcut. Tap the settings gear on Gboard’s toolbar, select Dictionary → Personal dictionary, choose your language, and tap the + icon. Paste the infinity sign ∞ into the word field, and enter inf or ;inf into the shortcut field.
Now, whenever you type your shortcut in Chrome, Google Docs, or messaging apps, ∞ appears as the center prediction above your keys. Samsung users can create an identical rule in Samsung Keyboard Settings → More typing options → Text shortcuts. Compare mobile approaches in our guide to the infinity symbol on iPhone, explore desktop techniques in the infinity symbol on Windows guide, and review all mobile tricks in how to type symbols on Android.
Frequently asked questions
Where is the infinity sign on Gboard?
Tap ?123, then tap =\<. The infinity symbol ∞ is located on the secondary symbol screen in the middle row.
How do I type ∞ on a Samsung phone?
Tap the !#1 button on Samsung Keyboard, tap the 1/2 indicator to switch to the second symbol page, and tap ∞.
Can I set up a text shortcut for ∞ on Android?
Yes. Open Gboard Settings → Dictionary → Personal dictionary, tap +, paste ∞ as the word, and set “inf” as the shortcut.