Character Case Converter ROT13, Leet Speak & Character Transforms
Transform character cases, invert letters, apply ROT13, Leet speak, Binary, and Morse code.
Character-Level Focus
Unlike sentence converters, every transform operates on individual characters — uppercase, lowercase, toggle, invert, and more applied character by character with no sentence logic.
Character Map View
See every character as a colored cell: red for uppercase output, blue for lowercase, green for digits. Shows the input character and the arrow to the output — a full visual trace.
12 Transforms
UPPER, lower, Toggle (swap each char's case), Invert (flip only letters), ROT13, Leet speak, Binary, Hex, Reverse, Mirror, Strikethrough, and Zalgo.
All Languages + RTL/LTR
Unicode-aware — Arabic, Hebrew, Greek, Cyrillic, and all scripts work. RTL/LTR toggle sets text direction in both panels. Transforms that don't apply to a script pass characters through unchanged.
Changed Character Count
Live stat shows exactly how many individual characters were modified by the current transform — so you know the precise impact of each operation.
Instant Real-time
Every transform runs as you type with no button needed. Switch transforms with a single click — the output and character map update in milliseconds.