What Does the Insert Key Do?
Insert (Ins) switches some programs between two ways of typing: insert mode, where new letters push the old ones along, and overtype mode, where new letters replace the old ones.

Letters vanishing as you type? Tap Insert once and they'll behave again.
Where is the Insert key?
The highlighted key is the Insert key on a typical Windows laptop keyboard, with a number pad on the right. Keyboards vary a little by brand.
What the Insert key does
Ever had letters disappearing as you type? Someone probably bumped Insert and turned on overtype mode. Press Insert again to switch back.
- Insert mode (normal): typing in the middle of a word pushes the rest along.
- Overtype mode: each new letter replaces the one to its right.
- Shift + Insert pastes and Ctrl + Insert copies in many Windows programs. These are older shortcuts that still work.
Microsoft Word turns off the Insert key's overtype switch by default, so it mostly matters in older programs and code editors.
Windows, Mac and Chromebook
Windows
Labeled Ins or Insert, often next to Delete. With Num Lock off, keypad 0 also works as Insert.
Mac
Macs do not have an Insert key. Some old full-size Mac keyboards had a Help key in that spot.
Chromebook
Chromebooks do not have an Insert key, and overtype mode is rarely needed in Chrome apps.
Which finger presses it?
Lift your right hand and press Insert with your pointer or middle finger.
Fun fact
Overtype mode comes from typewriters, where typing on the same spot always stamped a new letter over the old one.
Keep learning
- Practice the reach in Lesson 26: Numbers 6 to 0.
- More keys: Delete key, Home key, Print Screen, Backspace.
- See every keyboard key explained.
- Names of all the symbols: Keyboard Characters and Meanings.
Quick drill: find the Insert key
Press the key on your keyboard, or click or tap it below, when Rocky asks. Wrong key? We will tell you what it was.
Insert key FAQ
Why are my letters being replaced when I type?
Overtype mode is on. Press the Insert key once to turn it off.
What does Shift + Insert do?
In many Windows programs it pastes, the same as Ctrl + V.
Is there an Insert key on a Mac?
No. Mac keyboards leave it out.