How many times do you click your mouse every day? Probably too many to count. But have you ever thought about how every time you move your hand from the keyboard to the mouse, open a menu and move back, you're wasting time? People who master keyboard shortcuts do the same work twice as fast, and with less strain on their hands. Here are the 10 most useful key combinations, with the PC and Mac versions explained one by one. You don't have to memorise them all at once — a week of practice is enough.
PC shortcuts (Windows)
1. Ctrl + C / Ctrl + V — Copy and paste
This is where every shortcut journey starts. Select some text or a file, press Ctrl + C to copy, move to where you want it and press Ctrl + V to paste — no right-clicking needed. Use it for emails, forms and moving files, and you'll skip hundreds of "right-click → copy → right-click → paste" every day.
2. Ctrl + Z — Undo
Typed something wrong, deleted the wrong file, or messed up the formatting? Press Ctrl + Z right away to step back, and keep pressing to undo further back. It's the shortcut most people wish they'd known earlier.
3. Ctrl + S — Save instantly
Spent half a day on a document, and one crash wipes everything. Make it a habit to press Ctrl + S after every paragraph — one second to save, no more relying on luck. Works in Word, Excel, Photoshop and web editors alike.
4. Ctrl + F — Find
Need to locate a client name or a figure inside a 50-page report? Press Ctrl + F to open a search box, type a keyword and jump straight to it, then hop to the next match. Works in web pages, PDFs and Word.
5. Ctrl + A — Select all
Want to copy a whole document, grab every file in a folder, or clear all the text in a cell? Press Ctrl + A to select everything — faster than dragging the mouse from top to bottom.
6. Alt + Tab — Switch windows fast
With lots of windows open, hunting through the taskbar wastes time. Hold Alt and tap Tab to cycle through your recent windows. One tap moves one step, and releasing your hand lands on the one you want.
7. Win + D — Show the desktop
Got a screen full of windows and suddenly need a file on the desktop? Press Win + D (the Win key is the Windows-logo key at the bottom-left) to minimise everything, and press it again to bring it all back.
8. Ctrl + Shift + Esc — Open Task Manager directly
Computer frozen, or a program not responding? Skip the long way round and press Ctrl + Shift + Esc to open Task Manager straight away, then end the program that's stuck.
9. Win + V — Clipboard history
This one is advanced but brilliant. Normally, copying something new wipes out what you copied before. Turn on clipboard history and Win + V will show you a list of everything you've copied recently, so you can paste something from ages ago. The first time you press it, it asks whether to enable it — just click "Enable".
10. Win + L — Lock your computer in one press
Leaving your desk for the toilet or a meeting and don't want anyone peeking at your screen? Press Win + L to lock it instantly, and type your password when you're back. Protecting company data is a habit, and this is the easiest one to build.
Mac shortcuts
1. ⌘ + C / ⌘ + V — Copy and paste
Just like on PC, select something and press ⌘ + C to copy and ⌘ + V to paste — no mouse needed. Use it for emails, forms and moving files.
2. ⌘ + Z — Undo
Typed something wrong, deleted the wrong file, or messed up the formatting? Press ⌘ + Z to step back, and keep pressing to undo further.
3. ⌘ + S — Save instantly
A crash halfway through wipes everything. Make it a habit to press ⌘ + S after every paragraph — one second to save, no more relying on luck.
4. ⌘ + F — Find
Looking for a keyword inside a long document? Press ⌘ + F to open a search box, type and jump straight to it. Works in web pages, PDFs and Pages.
5. ⌘ + A — Select all
Want to copy a whole document or clear all the text in a field? Press ⌘ + A to select everything — faster than dragging the mouse.
6. ⌘ + Tab — Switch apps
With lots of apps open, hunting through the Dock wastes time. Hold ⌘ and tap Tab to cycle through your recent apps.
7. Fn + F11 — Show the desktop
Need a file on the desktop right away? Press Fn + F11 to push all windows aside, and press it again to bring them back.
8. ⌘ + Option + Esc — Force quit an app
An app not responding, or the rainbow wheel spinning forever? Press ⌘ + Option + Esc to open the Force Quit list and end the stuck app.
9. Clipboard history — not built in
macOS doesn't have Windows' Win + V clipboard history. If you want it, install a third-party tool such as Paste or Raycast, which lets you remember and paste back lots of things you copied earlier.
10. Control + ⌘ + Q — Lock your screen
Leaving your desk and don't want anyone peeking at your screen? Press Control + ⌘ + Q to lock it instantly, and type your password when you're back.
Beyond those ten, macOS has a few unique shortcuts worth knowing: ⌘ + Space (Spotlight search), ⌘ + W (close window), ⌘ + Q (quit app), ⌘ + T (new tab) and ⌘ + Shift + 4 (screenshot).
How to memorise them in a week
Don't be greedy and try to learn all ten at once. Start today with just the first three (copy/paste, undo, save), and only add the next one once they feel natural. A small note stuck beside your monitor helps too. After a week, your fingers will reach for them automatically — and you won't go back.
Summary
The essence of shortcuts isn't how many you know, but using them in the right place. These ten combinations cover about ninety percent of your daily work — you don't need to learn hundreds. From today, try doing these ten things without touching the mouse, and you'll be surprised how much time you used to waste.