It’s and its are two of the most commonly confused words in English. Even native speakers mix them up. The difference is simple when you know what each one means.
It’s is a short form of two words. It means:
If you can replace the word with “it is” or “it has,” then it’s (with apostrophe) is correct.
Its (no apostrophe) works like his or her. It shows that something belongs to “it.”
Even though we usually use an apostrophe to show who owns something (like John’s or the dog’s), its never takes one.
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