How to Capitalize Only the First Letter – Free Tool
Published 2026-03-28 · convertcase.in
Whether you want to capitalise the first letter of a sentence or the first letter of each word, here are the right tools for each scenario.
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1First Letter of Each Sentence
Use "Sentence case" at convertcase.in — it auto-capitalises the first word after each sentence-ending punctuation mark.
2First Letter of Each Word
Use "Capitalized Case" at convertcase.in — capitalises the first letter of every word.
3In JavaScript
"hello world".charAt(0).toUpperCase() + "hello world".slice(1) → "Hello world"
4In Python
"hello world".capitalize() → "Hello world"
Frequently Asked Questions
How do I capitalise only the first letter in Excel?
Use =UPPER(LEFT(A1,1))&LOWER(MID(A1,2,LEN(A1))) to capitalise only the first character.