Free Case Converter Tool Transform Text & Strings Instantly

character-level conversion

Transform every individual character — toggle case, invert, ROT13, Leet speak, binary, Morse, and more. A character-level tool, not a sentence tool. Supports all languages with RTL/LTR.

Character Transforms — Click to activate

UPPERCASE

Every letter to uppercase

lowercase

Every letter to lowercase

tOGGLE cASE

Swap each letter's case

iNVERT lETTERS

Flip only letter chars, keep rest

ROT13

Shift each letter by 13 positions

L33T SP34K

Substitute letters with digits

Binary

Each character as 8-bit binary

Hexadecimal

Each character as hex code point

esreveR

Reverse the entire character string

ɹoɹɹᴉW

Flip characters upside-down

H̶e̶l̶l̶o̶ ̶W̶o̶r̶l̶d̶

Add strikethrough to every character

H̷e̸l̵l̴ò̶

Add chaotic combining diacritics

Input

Paste Sample Upload Clear

Features

• 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.