🔤 Uppercase to Lowercase Converter
Convert short text between UPPERCASE and lowercase, one character at a time — pick a direction and select each letter to build your text.
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What This Calculator Does
This tool converts short text between uppercase (capital) and lowercase letters, letter by letter, in either direction.
The Method
Each character you select is converted using standard case-folding rules: every uppercase letter (A-Z) has a corresponding lowercase form (a-z), and vice versa. Numbers, spaces, and other symbols are left unchanged since they have no case.
Why It Matters
Consistent letter casing matters for readability, formatting rules, coding conventions, and data entry standards. This calculator is intended for quick, general text formatting purposes.
Last reviewed August 2026