How to type a hashtag (#) on Mac

Macworld

The hash symbol (also known as the pound/number sign, and which looks like this: #) was one of the more rarely used special characters until Twitter and Instagram came along. Now you can barely avoid the symbol widely known as the hashtag and ubiquitous on social media.

But how do you type a hash or hashtag symbol on a Mac? Well, that depends on your keyboard layout. For readers using the standard U.S. layout, it’s pretty simple, and we’ll cover those guys later in this article. But we’ll mainly be focusing on the U.K., where this is a little trickier.

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

Let’s not mess around. To type a hashtag on a Mac keyboard with a U.K. layout, press Option + 3.

On modern editions of this keyboard layout, you’ll see the # symbol on the 3 key, but instead of appearing above the 3, which would tell you to press the Shift key, it’s tucked away on the right. That means you should use Option. (The Option key is sometimes known as Alt, by the way.)

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.

Apple

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

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

Want to update your keyboard? Take a look at our in-depth buying guide to the best Mac keyboards, and you’ll soon have access to properly-labeled Option and hash keys.

But my Mac keyboard has a hash key… and it doesn’t work!

It types a backslash symbol (or ), right? And when you hold Shift, it types a vertical line (or |)? In that case, our guess would be that you’re inadvertently using a PC keyboard.

A handy key for hashtags and tildes.

David Price / Foundry

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

Unfortunately, your Mac is misinterpreting the keyboard’s hash symbol as a backslash. We’d recommend that you get a proper Mac keyboard., but in the meantime, you can type hashtags using your PC keyboard/Mac combo by pressing Alt + 3.

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

If you’re using a Mac with a U.S. keyboard layout, things are easier. To type a hashtag sign, hit Shift + 3.

Because U.S. readers have less need for the pound sign, the hash sign gets higher billing: it’s the secondary option for the 3 key. (On U.K. keyboards, as we’ve seen, typing Shift + 3 would give you £.)

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

Apple

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

Mac, Personal Software

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