Here’s the ultimate rundown of everything F1 – F12 keys do
The function keys on a computer keyboard labelled F1 through F12, are keys that have a special function defined by a currently running program or by the operating system. They can be combined with the Ctrl or Alt keys.
On some laptop computers and smaller keyboards, the F-keys may have a dedicated function such as the volume, changing the brightness of the screen, or other device-specific functions. On such keyboards, there is typically a separate Fn key that you can hold down to indicate that you want to use the key as a standard function key. For example, on the MacBook Pro laptop, the F12 key’s primary function is to increase the audio volume. If the key is pressed while the Fn key is held down, the key will register as F12, and trigger any software functions that are configured to use this key.
If you would prefer not to press the Fn key to access your function keys, you can configure the keyboard to treat them as regular function keys in your System Settings or Control Panel.
Below is a listing of some of the more common functions of the functions keys for Microsoft applications and Microsoft Windows, as well as some for macOS. As mentioned above, not all programs support these function keys, and the function keys on the keyboard may perform different tasks than those mentioned below.
Used as the help key in almost every program, it opens a help screen when this key is pressed.
Enter the CMOS Setup.
Windows Key + F1 opens the Microsoft Windows help and support centre.
Open the Task Pane.
In Microsoft Windows, renames a highlighted icon, folder or file, in all versions of Windows.
In Microsoft Excel, it edits the active cell.
Alt+Ctrl+F2 opens document window in Microsoft Word.
Ctrl+F2 displays a print preview window in the Microsoft Word.
Quickly rename a selected folder or file.
Enter the CMOS Setup.
Often opens a search feature for many programs, including the Microsoft Windows.
In Windows or MS-DOS command line F3 will repeat the last command.
In the Microsoft Word Ctrl+F3 will lowercase any highlighted text.
Shift+F3 will change the text in Microsoft Word from upper to lowercase or a capital letter at the beginning of every word.
Windows Key + F3 opens the Advanced find window in the Microsoft Outlook.
In Windows Explorer, start the search function.
Open Mission Control on an Apple computer running macOS X.
Open the address bar in the Internet Explorer and the Windows Explorer.
Alt+F4 closes program window currently active in the Microsoft Windows.
Ctrl+F4 closes the tab in the active window or open window in Microsoft Windows.
In all modern Internet browsers, pressing F5 will reload or refresh the document window or page.
Ctrl+F5 forces a complete refresh of a web page. It clears the cache and downloads all contents of the page again.
Refresh the list of contents in a folder or a file.
Open the find, replace, and go to the window in the Microsoft Word.
Starts a slideshow in PowerPoint.
Move the cursor to the address bar in Mozilla Firefox, Internet Explorer and most other Internet browsers.
Ctrl+Shift+F6 opens to another open Microsoft Word document.
Commonly used to spell check and grammar check a document in Microsoft programs such as Microsoft Outlook, Word etc.
Shift+F7 runs a Thesaurus check on word highlighted.
Turns on the Caret Browsing in Mozilla Firefox.
The function key is used to enter the Windows startup menu. It is commonly used to access the Windows Safe Mode.
Used by some of the computers to access the Windows recovery system, but may require a Windows installation CD.
Displays a thumbnail image for all workspaces in macOS.
Refresh document in the Microsoft Word.
Send and receive e-mail in the Microsoft Outlook.
Opens the Measurements toolbar in Quark 5.0.
With macOS 10.3 or later, displays a thumbnail for each window in a single workspace.
Using the F9 and Fn key at the same time opens Mission Control on an Apple computer running macOS X.
In Microsoft Windows, it activates the menu bar of an open application.
Shift+F10 is the same as the right-clicking on the highlighted icon, Internet link or file.
Access the hidden recovery partition on HP, Compaq and Sony computers.
Enter CMOS Setup on some computers.
With macOS 10.3 or later, shows all open Windows for the active program.
Exit and enter fullscreen mode in all modern Internet browsers.
Access the hidden recovery partition on eMachines and Lenovo computers.
With macOS 10.4 or later, hides all open windows and shows the desktop.
Open the Save as a window in the Microsoft Word.
Ctrl+F12 opens a document in the Word.
Shift+F12 saves the Microsoft Word document (like Ctrl+S).
Ctrl+Shift+F12 prints a document in the Microsoft Word.
Preview a page in the Microsoft Expression Web.
Open browser debug tool or Firebug.
With an Apple running macOS 10.4 or later, F12 shows or hides the Dashboard.
Access the list of bootable devices on a computer at startup, allowing you to select a different device to boot from hard drive, CD or DVD drive, USB drive, floppy drive and network).
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Updated: 04/12/2021 by Computer Hope
The function keys or F keys are lined across the top of the keyboard and labeled F1 through F12. These keys act as shortcuts, performing certain functions, like saving files, printing data, or refreshing a page.
For example, the key is often used as the default help key in many programs. The key is used in an Internet browser to refresh or reload a web page. The function of these keys can differ by operating system and by software program.
Where are the function keys on the keyboard?
Below is an overview of a computer keyboard with the function keys (F1 through F12) highlighted in blue.
In the past, AppleMacintosh computers did not have function keys. However, their new keyboards include F1 through F12 or F1 through F19 keys at the top. MacBooks with a Touch Bar also do not have function keys.
Some early IBM computer keyboards had two rows of function keys, with the second row containing F13 - F24. For additional information with function keys, see: What are the F1 through F12 keys?
The function keys should not be confused with the Fn (function) key found on laptop computer keyboards, Apple keyboards, and other keyboards with special functions.
What row are the function keys on?
The function keys are on the function key row, which is above the number key row and is the highest row on a keyboard.
How many function keys are on a keyboard?
Today's traditional PC keyboards have 12 function keys, through . Some specialized PC keyboards have 24 function keys, through .
Many Apple desktop computer keyboards with a number pad have 19 function keys, through .
F, F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12, Function, Hardware terms, Key, Keyboard, Keyboard shortcut, Keyboard terms
Key on a computer or terminal keyboard
For the modifier key featured on most compact keyboard layouts, see Fn key.
A function key is a key on a computer or terminalkeyboard which can be programmed so as to cause an operating system command interpreter or application program to perform certain actions, a form of soft key. On some keyboards/computers, function keys may have default actions, accessible on power-on.
Function keys on a terminal may either generate short fixed sequences of characters, often beginning with the escape character (ASCII 27), or the characters they generate may be configured by sending special character sequences to the terminal. On a standard computer keyboard, the function keys may generate a fixed, single byte code, outside the normal ASCII range, which is translated into some other configurable sequence by the keyboard device driver or interpreted directly by the application program. Function keys may have abbreviations or pictographic representations of default actions printed on/besides them, or they may have the more common "F-number" designations.
The Singer/Friden 2201 Flexowriter Programatic, introduced in 1965, had a cluster of 13 function keys, labeled F1 to F13 to the right of the main keyboard. Although the Flexowriter could be used as a computer terminal, this electromechanical typewriter was primarily intended as a stand-alone word processing system. The interpretation of the function keys was determined by the programming of a plugboard inside the back of the machine.
Soft keys date to avionics multi-function displays of military planes of the late 1960s/early 1970s, such as the Mark II avionics of the F-111D (first ordered 1967, delivered 1970–73). In computing use, they were found on the HP 9810A calculator (1971) and later models of the HP 9800 series, which featured 10 programmable keys in 5×2 block (2 rows of 5 keys) at the top left of the keyboard, with paper labels. The HP 9830A (1972) was an early desktop computer, and one of the earliest specifically computing uses. HP continued its use of function keys in the HP 2640 (1975), which used screen-labeled function keys, placing the keys close to the screen, where labels could be displayed for their function.
NEC's PC-8001, introduced in 1979, featured five function keys at the top of the keyboard, along with a numeric keypad on the right-hand side of the keyboard.
Their modern use may have been popularized by IBM keyboards: first the IBM 3270 terminals, then the IBM PC. IBM use of function keys dates to the IBM 3270 line of terminals, specifically the IBM 3277 (1972) with 78-key typewriter keyboard or operator console keyboard version, which both featured 12 programmed function (PF) keys in a 3×4 matrix at the right of the keyboard. Later models replaced this with a numeric keypad, and moved the function keys to 24 keys at the top of the keyboard. The original IBM PC keyboard (PC/XT, 1981) had 10 function keys (F1–F10) in a 2×5 matrix at the left of the keyboard; this was replaced by 12 keys in 3 blocks of 4 at the top of the keyboard in the Model M ("Enhanced", 1984).
Schemes on various keyboards
- Apple Macintosh: The classic Mac OS supported system extensions known generally as FKEYS which could be installed in the System file and could be accessed with a Command-Shift-(number) keystroke combination (Command-Shift-3 was the screen capture function included with the system, and was installed as an FKEY); however, early Macintosh keyboards did not support numbered function keys in the normal sense. Since the introduction of the Apple Extended Keyboard with the Macintosh II, however, keyboards with function keys have been available, though they did not become standard until the mid-1990s. They have not traditionally been a major part of the Mac user interface, however, and are generally only used on cross-platform programs. According to the Macintosh Human Interface Guidelines, they are reserved for customization by the user. Current Mac keyboards include specialized function keys for controlling sound volume. The most recent Mac keyboards include 19 function keys, but keys F1–F4 and F7–F12 by default control features such as volume, media control, and Exposé. Former keyboards and Apple Keyboard with numeric keypad has the F1–F19 keys.
- Apple Macintoshnotebooks: Function keys were not standard on Apple notebook hardware until the introduction of the PowerBook 5300 and the PowerBook 190. For the most part, Mac laptops have keys F1 through F12, with pre-defined actions for some, including controlling sound volume and screen brightness.
- Apricot PC/Xi: six unlabelled keys, each with an LED beside it which illuminates when the key can be used; above the keys is a liquid crystal display—the 'microscreen'—that is used by programs to display the action performed by the key.
- Atari 8-bit family (400/800/XL/XE): four dedicated keys (Reset, Option, Select, Start) at the right hand side or on the top of the keyboard; the XL models also had a Help key. Atari 1200XL had four additional keys labeled F1 through F4 with pre-defined actions, mainly related to cursor movement.
- Atari ST: ten parallelogram-shaped keys in a horizontal row across the top of the keyboard, inset into the keyboard frame instead of popping up like normal keys.
- BBC Micro: red/orange keys F0 to F9 in a horizontal row above the number keys on top of the computer/keyboard. The break, arrow, and copy keys could function as F10–F15. The case included a transparent plastic strip above them to hold a function key reference card.
- Coleco Adam: six dark brown keys in a horizontal row above the number keys, labeled with Roman numerals I–VI.
- Commodore VIC-20 and C64: F1/F2 to F7/F8 in a vertical row of four keys ascending downwards on the computer/keyboard's right hand side, odd-numbered functions accessed unshifted, even-numbered shifted; orange, beige/brown, or grey key color, depending on VIC/64 model/revision.
- Commodore 128: essentially same as VIC-20/C64, but with (grey) function keys placed in a horizontal row above the numeric keypad right of the main QWERTY-keyboard; also had Help key.
- Commodore Amiga: ten keys arranged in a row of two five-key groups across the top of the keyboard (flush with the ordinary keyboard top row); function keys are 1½ times the width of ordinary keys. Like the Commodore 128, this also had a Help key.
- Graphing calculators, particularly those from Texas Instruments, Hewlett-Packard and Casio, usually include a row of function keys with various preassigned functions (on a standard hand-held calculator, these would be the top row of buttons under the screen). On low-end models such as the TI-83-series, these function mainly as an extension of the main keyboard, but on high-end calculators the functions change with the mode, sometimes acting as menu navigation keys as well.
- HP 2640 series terminals (1975): first known instance—late 1970s—of screen-labeled function keys (where keys are placed in proximity or mapped to labels on CRT or LCD screen).
- HP 9830: F1–F8 on two rows of four in upper left with paper template label. An early use of function keys (1972).
- IBM 3270: probably the origin of function keys on keyboards, circa 1972. On this mainframe keyboard early models had 12 function keys in a 3×4 matrix at the right of the keyboard; later that changed to a numeric keypad, and the function keys moved to the top of the keyboard, and increased to 24 keys in two rows.
- IBM 5250: early models frequently had a "cmd" modifier key, by which the numeric row keys emulate function keys; later models have either 12 function keys in groups of 4 (with shifted keys acting as F13–F24), or 24 in two rows. These keys, along with "Enter", "Help", and several others, generate "AID codes", informing the host computer that user-entered data is ready to be read.
- IBM PC AT and PS/2 keyboard: F1 to F12 usually in three 4-key groups across the top of the keyboard. The original IBM PC and PC XT keyboards had function keys F1 through F10, in two adjacent vertical columns on the left hand side; F1|F2, F3|F4, ..., F9|F10, ascending downwards. Some IBM compatible keyboards, e.g., the Northgate OmniKey/102, also featured function keys on the left, which on examples with swapped left Alt and Caps Lock keys, facilitate fingers of a single hand simultaneously striking modifier key(s) and function keys swiftly and comfortably by touch even by those with small hands. Many modern PC keyboards also include specialized keys for multimedia and operating system functions.
- MCK-142 Pro: two sets of function keys: F1–F12 at the left side of the keyboard and additionally 24 user programmable PF keys located above QWERTY keys.
- NEC PC-8000 Series (1979): five function keys at the top of the keyboard, along with a numeric keypad on the right-hand side of the keyboard.
- Sharp MZ-700: blue keys F1 to F5 in a horizontal row across the top left side of the keyboard, the keys are vertically half the size of ordinary keys and twice the width; there is also a dedicated "slot" for changeable key legend overlays (paper/plastic) above the function key row.
- VT100 terminals: four function keys (PF1, Alt key;[dubious – discuss]PF2, help; PF3, menu; PF4, escape to shell) above the numeric keypad.
Action on various programs and operating systems
In the classic Mac OS, the function keys could be configured by the user, with the Function Keys control panel, to start a program or run an AppleScript.
macOS assigns default functionality to (almost) all the function keys from to , but the actions assigned by default to these function keys has changed a couple of times over the history of Mac products and corresponding Mac OS X versions[circular reference]. As a consequence, the labels on Macintosh keyboards have changed over time to reflect the newer mappings of later Mac OS X versions : for instance, on a 2006 MacBook Pro, functions keys , and are labelled for volume down/volume up, whereas on later MacBook Pros (starting with the 2007 model), the volume controls are located on function keys to where they are mapped to various functions.
Any recent version of Mac OS X or macOS is able to detect which generation of Apple keyboard is being used, and to assign proper default actions corresponding to the labels shown on this Apple keyboard (provided that this keyboard was manufactured BEFORE the release of the version of Mac OS X being used). As a result, default mappings are sometimes wrong (i.e. not matching the labels shown on the keyboard) when using a recent USB Apple keyboard on an older version of Mac OS X which doesn't know about the new function key mapping of this keyboard (e.g. because Mission control and Launchpad didn't exist at that time, the corresponding labels shown on the keyboard can't match the default actions assigned by older versions of Mac OS X which were Exposé and Dashboard).
It can be noted that:
- all function keys have been changed over time, to the exception of and who have always been mapped to brightness control.
- all Apple laptops after 2007 are missing any Num Lock key, even if they lack a keypad (the Num Lock was previously located on the key on older Apple laptops).
- the special key for ejection of disks (which was located at the right of the key on older Apple keyboards) has been removed from Apple computers since they don't have an internal optical disk drive anymore, to the exception of the MacBook Air 2010 which had disk ejection labelled on its key (for use in combination with an external USB SuperDrive).
- function keys to have no labels; they were only available on full keyboards of fixed Apple computers (iMac, Mac Pro, or Mac Mini). All laptop computers have always lacked these extra keys, as well as any recent fixed Apple computer equipped with wireless Apple keyboard.
- on some macOS versions, it's said that function keys and are mapped by default to decrease/increase contrast (although nothing is labelled on these keys on Macintosh keyboards).
- on Boot Camp, function keys to are mapped to the corresponding IBM PC keys (which are located on the same place of the keyboard): Print Screen, Scroll Lock and Pause key
- on all versions of Mac OS X or macOS, software functions can be used by holding down the Fn key while pressing the appropriate function key, and this scheme can be reversed by changing the macOS system preferences.
- as of 2016, Apple has replaced the individual function keys with the touchbar on certain models of MacBook Pro.
Under MS-DOS, individual programs could decide what each function key meant to them, and the command line had its own actions (e.g., copied to the current command prompt words from the previous command).
Following the IBM Common User Access guidelines, the key gradually became universally associated with Help in most early Windows programs. To this day, Microsoft Office programs running in Windows list as the key for Help in the Help menu. Internet Explorer in Windows does not list this keystroke in the help menu, but still responds with a help window.
is commonly used to activate a search function in applications, often cycling through results on successive presses of the key. + is often used to search backwards. Some applications such as Visual Studio support + as a means of searching for the currently highlighted text elsewhere in a document.
is also commonly used as a reload key in many web browsers and other applications, while activates the full screen/kiosk mode on most browsers. Under the Windows environment, + is commonly used to quit an application; + will often close a portion of the application, such as a document or tab. generally activates the menu bar, while + activates a context menu. is used in many Windows applications such as Windows Explorer, Excel, Visual Studio and other programs to access file or field edit functions.
is used in some applications to make the window "fullscreen", like in 3D Pinball: Space Cadet. In Microsoft IE, it is used to view the URL list of previously viewed websites.
Other function key assignments common to all Microsoft Office applications are: to check spelling, + to call the macros dialog, + to call the Visual Basic Editor and ++ to call the Script Editor. In Microsoft Word, + reveals formatting. In Microsoft PowerPoint, starts the slide show, and moves to the next pane.
WordPerfect for DOS is an example of a program that made heavy use of function keys.
In Internet Explorer 6 and Internet Explorer 7, opens Internet Explorer Developer Toolbar. highlights the URL in the address bar.
Function Keys are also heavily used in the BIOS interface. Generally during the power-on self-test, BIOS access can be gained by hitting either a function key or the delete key. In the BIOS keys can have different purposes depending on the BIOS. However, is the de facto standard for save and exit which saves all changes and restarts the system.
During Windows 10 startup, + is used to enter safe mode; in legacy versions of Microsoft Windows, the key was used alone.
What are the F1 through F12 keys?
Updated: 12/31/2020 by Computer Hope
The function keys or F-keys on a computer keyboard, labeled F1 through F12, are keys with a special function defined by the operating system or the active program. In certain instances, they may be combined with the or keys.
On some smaller keyboards and laptop computers, the F-keys may have a dedicated purpose, such as changing the screen brightness, the volume, or other device-specific functions. On these keyboards, there's an Fn key that you can hold down to toggle what the F-key does. See our Fn page for further information and help with using this key.
Below is an overview of the more common functions of the F-keys (F1 - F12) for Windows and macOS.
- Used as the help key in almost every program. When pressed, a help screen opens, or you're directed to a web page.
- Enter BIOS setup as the computer is booting.
- + would open the Microsoft Windows help and support center.
- In Excel, press ++ to create a new worksheet tab.
- Open the Task Pane.
- Pressing + runs a spell check in Corel WordPerfect.
See our F1 page for further information on this key and its possible secondary functions.
See our F2 page for further information on this key and its possible secondary functions.
- Often opens a search feature for many programs, including Microsoft Windows, when at the Windows desktop on Windows 7 and lower.
- In some programs, after an initial search is performed, finds the next search value.
- In MS-DOS or Windows command line, repeats the last command entered.
- In Microsoft Word, +lowercases any highlighted text.
- + changes the text in Microsoft Word from upper to lowercase or a capital letter at the beginning of every word.
- + opens the Advanced find window in Microsoft Outlook.
- In Windows Explorer, start the search function.
- Open Mission Control on an Apple computer running the macOS X operating system.
See our F3 page for further information on this key and its possible secondary functions.
See our F4 page for further information on this key and its possible secondary functions.
- In all modern Internet browsers, pressing refreshes or reloads the page or document window.
- + forces a complete refresh of the web page, clearing the cache and downloading all contents of the page again.
- Refresh the list of contents in a folder.
- Open the find, replace, and go to window in Microsoft Word.
- Pressing starts a slideshow in PowerPoint from the first slide. Pressing + starts the slideshow from the currently active slide.
- Pressing when the computer is first loading MS-DOS loads the default settings.
See our F5 page for further information on this key and its possible secondary functions.
See our F6 page for further information on this key and its possible secondary functions.
See our F7 page for further information on this key and its possible secondary functions.
- Function key used to enter the Windows startup menu, commonly used to access Windows Safe Mode.
- Used by some computers to access the Windows recovery system, but may require a Windows installation CD.
- Displays a thumbnail image for all workspaces in macOS.
- Pressing the F8 key opens the Replace window in TextPad.
See our F8 page for further information on this key and its possible secondary functions.
See our F9 page for further information on this key and its possible secondary functions.
- In most Microsoft Windows programs, by default, F10 activates the menu bar or Ribbon of an open application.
- + is the same as right-clicking a highlighted icon, file, or Internet link.
- Access the hidden recovery partition on Compaq, HP, and Sony computers.
- Enter BIOS setup as the computer is booting.
- With macOS 10.3 or later, shows all open Windows for the active program.
See our F10 page for further information on this key and its possible secondary functions.
See our F11 page for further information on this key and its possible secondary functions.
- Open the Save as window in Microsoft Word.
- + opens a document in Word.
- + saves the Microsoft Word document (like +).
- ++ prints a document in Microsoft Word.
- Open Firebug, Chrome Developer Tools, or other browsers debug tool.
- With an Apple running macOS 10.4 or later, F12 shows or hides the Dashboard.
- Preview a page in Microsoft Expression Web.
- Access the list of bootable devices on a computer at startup, allowing you to select a different device to boot from (e.g., hard drive, CD or DVD drive, floppy drive, USB drive, and network).
See our F12 page for further information on this key and its possible secondary functions.
- On newer Apple keyboards, the F16, F17, F18, and F19 keys are above the number pad.
- Early IBM computers also had keyboards with F13 through F24 keys. However, because these keyboards are no longer used, they are not listed on this page.
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