She'll is a contraction, a shortened form of “she will.” When you say she'll, you're combining two words into one by removing some letters and adding an apostrophe where they used to be.

You use she'll when talking about something a girl or woman will do in the future: “Mom said she'll pick us up after practice” or “She'll be home from college next week.” It makes sentences flow more naturally in conversation and writing.

Contractions like she'll are common in everyday English. Other examples include I'll (I will), he'll (he will), they'll (they will), and we'll (we will). Notice the pattern: the apostrophe shows where letters got removed when combining the words.

While she'll sounds casual and friendly, teachers sometimes ask students to write out “she will” in formal essays or assignments. Both versions mean exactly the same thing, but the full form can sound more serious or official.