Capital Letter Converter — Uppercase, Lowercase, Title Case

Capital letter converter for any text. Uppercase, lowercase, title case, sentence case. Right-click selected text to convert.

🔠 Capital Letter Converter — Uppercase, Lowercase, Title Case Change the casing of any text in your browser. Right-click selected text and pick a transformation — uppercase, lowercase, title case, sentence case, capitalize, or invert. No copy-paste round-trip to a website. ✨ FEATURES 🔡 All caps converter — turn any selected text into UPPERCASE with one click. The uppercase converter handles paragraphs, headings, and form fields. 🔠 Uppercase to lowercase converter — flip text from CAPS to small letters instantly. The capital letter converter switches direction with the same right-click menu. 📝 Title case converter — capitalize the first letter of every word. Works for headlines, article titles, and AP style editorial copy. Follows standard headline rules. 📄 Sentence case converter — capitalize only the first letter of each sentence. Default styling for body copy and email drafts. Convert sentence case with one click. 🔄 Invert casing — flip every letter from upper to lower and back. Handy when you accidentally hit Caps Lock. 🅰️ Capitalize converter — capitalize text online without leaving the page. The proper case converter recognizes word boundaries automatically. ⚡ Right-click menu integration — every transformation appears in the browser context menu. No popup. No new tab. No extra clicks. 🎯 WHO IT IS FOR 📰 Writers and editors who need an AP title case converter for headlines and editorial content. 📧 Email writers who want a sentence case converter to fix Caps Lock mistakes in drafts. 📚 Students working with long quotes — the capital letter convert tool reformats blocks of text to match the citation style. 💼 Marketers and copywriters who change capitalization across landing pages, ad copy, and product titles. 👩‍💻 Developers who need a letter case converter for variable renaming during code reviews. 🛠️ HOW IT WORKS 🔒 The capital letter converter runs entirely in your browser. No data sent to servers. No tracking. Selected text never leaves your device. 🖱️ Select text on any page. Right-click. Pick a style from the menu. The text replaces in place — or copies to your clipboard if the field is read-only. 📋 Works on web forms, contenteditable fields, Google Docs, Gmail, Notion, and any text input. The online case converter runs without a network call. 🚀 WHY THIS CASE CONVERTER Most online tools require copy-paste to a website. You leave the page. You paste your text. You pick a style. You copy back. You paste in your form. This capital letters converter skips all that. Right-click. Pick. Done. 📝 USE CASES 📰 Headline writing — switch a draft headline between Title Case and Sentence Case to compare which reads better. 📧 Email cleanup — fix a message written in all caps by running the all caps converter on the body. 📄 Form data — paste a product title into an admin form and apply the lowercase converter format if the database expects it. The caps to lowercase converter works on any input. 💬 Chat and social — change case online when you switch a post heading from sentence to title style. 📋 Editorial copy — apply ap title case converter rules to article titles before publishing. The all capital converter handles section headers. 💡 TIPS — Select the text first, then right-click. The menu only appears when text is selected. — Use sentence case converter for the cleanest reading on long paragraphs. — The capital letter converter remembers the last style you picked — apply it again with one click. — For variable-style formats (camelCase, snake_case, kebab-case), select code in your IDE then paste here. Install the capital letter converter and stop round-tripping to convertcase websites.