Need to normalise a list to all-caps or all-lowercase? Whether you're preparing data for a case-sensitive system, standardising a keyword list, or reformatting an export, case conversion is a one-click operation online.
Convert Case Online
Go to remove-lines.com, paste your list, and enable either Lowercase or Uppercase in the Transform section. Click Process and every line is converted instantly.
Change case in one click
Uppercase, lowercase — free and instant in your browser.
Convert case now →When Lowercase Matters Most
Lowercasing is particularly valuable before deduplication — it ensures "Apple", "apple", and "APPLE" are treated as the same item. It's also standard practice for email addresses and URLs, which should be stored in lowercase for consistency.
When Uppercase Is Useful
Uppercase conversion is handy for generating database constants, SQL table names, or code enumerations from a plain list. It's also used for visual emphasis in certain document formats.
Python Case Conversion
lines = open('input.txt').read().splitlines()
lower = [l.lower() for l in lines]
upper = [l.upper() for l in lines]Title Case
Title case (First Letter Of Each Word Capitalised) isn't directly available in remove-lines.com yet, but you can achieve it with Python's str.title() or JavaScript's split(' ').map(w => w[0].toUpperCase() + w.slice(1)).join(' ').