Num Lock

Num LockShort for numeric lock or number lock, the Num Lock key is located on the top left corner of the numeric keypad of the keyboard and enables and disables the numeric pad.

Turning the Num Lock on allows you to use the numbers on the keypad and turning the Num Lock off enables the key's other functions, such as using the keypad as an arrow pad. The picture shows what the Num Lock key with a LED may look like on a keyboard.

Where is the Num Lock key on the keyboard?

Below is an overview of a computer keyboard with the Num Lock key highlighted in blue on the numeric keypad.

Num Lock key

Note: Apple computer keyboards and keyboards without numeric keypads do not have a Num Lock key.

How to enable and disable Num lock

To enable Num Lock, press the Num Lock button and make sure the Num Lock LED light is on. To disable Num Lock, press the Num Lock button and make sure the Num Lock LED light is off.

Num lock keys

Below is a chart with additional information about what each key does when Num Lock is enabled and disabled. For example, pressing the "2" key when Num Lock is enabled enters the number "2" and when Num Lock is off, it will arrow down one line.

Key Num lock enabled Num lock disabled
0 0 Ins
1 1 End
2 2 Down arrow
3 3 PgDn
4 4 Left arrow
5 5 Nothing
6 6 Right arrow
7 7 Home
8 8 Up arrow
9 9 PgUp
. . Del

Related pages

Also see: Keyboard terms, Number, Numeric keypad, Togglekeys