The hash symbolization – also known as the pounding / number sign , or even theoctothorp(e)as Macworld lector Keith bespeak out – was one of the more seldom used extra characters until Twitter and Instagram came along . Now you’re able to hardly avoid the symbol widely know as the hashtag and ubiquitous on social media .

Where is the Hash Key?

If you have an Apple keyboard , with a U.S. keyboard layout , things are simple . To typewrite a hashtag sign , hitShift + 3 .

Apple

How to type a hashtag sign (#) in the U.K.

The ‘ hidden ’ keys on a U.K. Apple keyboard

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Because U.S. readers have less need for the pound sign , the hashish sign gets eminent billing : it ’s the secondary pick for the 3 key . But on U.K. keyboards that space is reserved for £ , so type Shift + 3 will give you £ .

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You’ll notice that the euro sign has also disappeared.

To type a hashtag on a Mac keyboard with a U.K. layout , pressOption + 3 . ( TheOption keyis sometimes jazz as Alt , by the elbow room . )

On some old keyboards you ’ll find that the phone number 3 key only has the pound sign . Do n’t be put off : pressingOption + 3will still work on such keyboards . It ’s just that in those days , the hash sign was n’t viewed as such an important character . ( You may also find that your older Mac keyboard judge the Option key as Alt . )

Want to revise your keyboard ? Take a look at our in - depth buying guide to thebest Mac keyboard , and you ’ll soon have memory access to properly - label Option and hash keys .

Mac US keyboard layout

You’ll notice that the euro sign has also disappeared.

I’m not typing in English! Where is my Hashkey?

But my Mac keyboardhasa hash key… and it doesn’t work!

It type a backslash symbol ( or \ ) , right ? And when you prevail shimmy , it types a vertical line ( or | ) ? In that case , our guess would be that you ’re unknowingly using a PC keyboard .

David Price / Foundry

Some PC keyboards in the U.K. have a consecrated haschisch key on the right , above Shift , and to the left of Return . If this keyboard was connected to a Windows machine , make this button would generate a # ( and a ~ when used with sack ) . But because you ’ve colligate a microcomputer keyboard to a Mac – which is possible , and will work OK a lot of the time – the departure in layout confuse macOS .

UK extra keys on keyboard

The ‘hidden’ keys on a U.K. Apple keyboard

Unfortunately , your Mac is misinterpreting the keyboard ’s hashish symbol as a backslash . We ’d advocate that you get a right Mac keyboard . , but in the meantime , you could type hashtags using your PC keyboard / Mac combo by pressingAlt + 3 .

For more keyboard tips , seeHow to type Æ , € , # , @ , © and other special characters on a Mac .

Mac UK keyboard layout

U.K. keyboards have to relegate the # to the number 3’s Option slot, because we need the Shift slot for our glorious British pound sign.

Mac Keyboard UK

Alt? This isn’t Windows Vista, you know.

Hash key on UK PC keyboard layout

A handy key for hashtags and tildes.