SymbolHub

Double Prime Symbol (″)

The double prime symbol ″ is Unicode U+2033, the mark for inches, arcseconds and second derivatives. Press Copy to put it on your clipboard.

Unicode
U+2033
HTML
″
Word
2033 Alt+X

How to type the double prime symbol (″)

The quickest way is to press Copy above and paste. To type ″ yourself, use the method for your device below.

Windows

  1. In Word or Outlook, type 2033 and press Alt + X. Alt + X converts the hex code before the cursor into the character, and back again.
  2. Press Win + R, type charmap and press Enter. Tick “Advanced view”, search for Double Prime, then Select and Copy. Character Map is built into every version of Windows.

Mac

  1. Press Control + Command + Space to open the Character Viewer, search for double prime and double-click it.
  2. With the Unicode Hex Input keyboard enabled (System Settings → Keyboard → Input Sources), hold Option and type 2033.

Linux & ChromeOS

  1. Press Ctrl + Shift + U, type 2033, then press Enter or Space. Works in GTK and IBus apps (GNOME, Firefox, Chrome, LibreOffice) and on ChromeOS.

iPhone & iPad

  1. Copy ″ from this page, then go to Settings → General → Keyboard → Text Replacement and add it with a shortcut such as ;doub. The shortcut then turns into the symbol as you type, in every app.

Android

  1. Copy ″ here, then open Gboard settings → Dictionary → Personal dictionary and add it with a shortcut.

Microsoft Word

  1. Type 2033, then press Alt + X.
  2. Insert → Symbol → More Symbols. Set “from” to Unicode (hex), type 2033 in “Character code” and click Insert.

Google Docs

  1. Insert → Special characters, then search for “double prime” or draw it in the box.

Excel & Google Sheets

  1. Enter =UNICHAR(8243) in a cell. It works in Excel 2013 and later and in Google Sheets.

HTML

  1. Write ″ or ″ in your HTML.

What does ″ mean?

″ is the double prime: inches (a 27″ monitor), arcseconds (51° 30′ 26″ N) and second derivatives (f″(x)). People usually type the straight quotation mark " instead, which is fine in a pinch, but the curly ” that word processors substitute is wrong for measurements. The triple prime ‴ exists for third derivatives and for arc-thirds in old astronomy.

Common uses

  • Screen and tyre sizes: 27″ display
  • Coordinates: 26″ of arc
  • Calculus: f″(x)

Double Prime Symbol codes for HTML, CSS and programming

Every code below produces ″. Use the HTML entity in web pages, the CSS escape in content, and the escape sequence in source code.

Unicode code pointU+2033
HTML entity (named)″
HTML decimal″
HTML hex″
CSS contentcontent: "\2033";
JavaScript"\u2033"
Python"\u2033"
Python (by name)"\N{DOUBLE PRIME}"
Java / C#"\u2033"
UTF-8 bytesE2 80 B3
UTF-162033
URL encoded%E2%80%B3

″ vs look-alike characters

These characters look similar to ″ but have a different meaning and code. Pasting the wrong one can break search, sorting and screen readers.

CharNameWhen to use it
Quotation Mark
U+0022		Straight quotation mark, the usual keyboard substitute.
Right Double Quotation Mark
U+201D		Right double quotation mark (curly), wrong for inches.
Triple Prime
U+2034		Triple prime.

Symbols similar to ″

Click to copy, or open a symbol for its codes. See the full math symbols collection.

″ character properties

Official Unicode name
DOUBLE PRIME
Also known as
double prime, inch symbol, second sign, arcsecond
Code point
U+2033
Unicode block
General Punctuation (U+2000–U+206F)
General category
Other punctuation (Po)
Added in
Unicode 1.1 (1993)
Plane
Basic Multilingual Plane (0)
Emoji
No, it is a text symbol

Frequently asked questions

How do I write feet and inches correctly?

Use the prime and double prime: 5′ 9″. If you cannot type them, straight marks (5' 9") are an acceptable fallback; curly quotes are not.

Is there an alt code for the double prime symbol?

No. ″ is outside the Windows-1252 and code page 437 character sets, so no Alt + number code produces it. Copy it from this page, type 2033 then Alt + X in Word, or find it in Character Map.

How do I type the double prime symbol on a Mac?

There is no single Option shortcut for ″ on the US layout. Press Control + Command + Space to open the Character Viewer, search for “double prime” and double-click it, or copy it from this page.

What is the HTML code for the double prime symbol?

Use the named entity ″ or the numeric reference ″ (hex ″). All three display ″ in every browser.

What is the Unicode for the double prime symbol?

″ is U+2033, officially named DOUBLE PRIME, in the General Punctuation block. It has been part of Unicode since version 1.1 (1993).