Encoding & conversion

Encode and decode Base64, URLs, HTML entities, hexadecimal, binary and Morse, plus the classic ciphers. UTF-8 safe and running entirely in your browser.

A1Z26 cipherConvert letters to numbers and back with the simple A1Z26 substitution cipher.

Affine cipherEncrypt text using the affine cipher, a linear mathematical encryption based on modular arithmetic.

Ascii85 encode and decodeEncode text to Ascii85 (base85) and decode it back, with optional Adobe delimiters.

Atbash cipherMirror the alphabet so A becomes Z and Z becomes A — encoding and decoding in one step.

Bacon cipherEncode text as five-symbol A/B groups with Bacon’s biliteral cipher, and back.

Base32 encode and decodeConvert text to RFC 4648 Base32 and back, with base32hex and padding options.

Base45 encoderEncode text to Base45 or decode Base45 to text per RFC 9285.

Base58 encode and decodeEncode text to Base58 with the Bitcoin alphabet and decode it back.

Base62 encode and decodeEncode text to Base62 with digits and letters, and decode it back.

Base64 encode and decodeConvert text to Base64 and back, with full UTF-8 and URL-safe support.

Baudot code translatorEncode text to 5-bit Baudot / ITA2 telegraph code and decode it back.

BCD decoderConvert binary-coded decimal nibbles to a decimal number, or the other way round.

Beaufort cipherEncrypt and decrypt text with the Beaufort cipher, a self-reciprocal variant of the Vigenère cipher.

Bifid ciphernewEncrypt or decrypt text with the Bifid cipher, combining a Polybius square with transposition.

Binary to text and backConvert text to binary code and binary back to text, bit by bit.

Braille translatorTranslate text to Unicode braille letter by letter and back again.

Caesar brute forceCrack a Caesar cipher by showing all 25 possible shifts at once.

Caesar cipherEncode or decode text with a classic Caesar letter-shift cipher.

Character code converterTurn text into Unicode code points and character codes back into text.

Charset detectorGuess the original encoding behind garbled text and recover it.

Code string escapernewTurn pasted text into a string literal for C, Python, SQL, shell and 16 other languages — and back.

Cyrillic transliteratornewConvert Cyrillic or Greek text to Latin script using ISO 9, scientific, BGN/PCGN or Slovak transliteration rules.

Emoji shortcode converterConvert between emoji shortcodes like :smile: and the emoji character itself.

Encrypt text with a passwordEncrypt text with a password using AES — only someone who knows it can read it back.

Geohash encoder and decodernewConvert latitude/longitude coordinates to a geohash string, or a geohash back to coordinates.

GPS coordinate converternewConvert GPS coordinates between decimal degrees and degrees-minutes-seconds, for one pair or a whole list.

Hex dumpTurn text into a classic hexdump with offsets and an ASCII gutter, or read one back.

Hex to text and backConvert text to hexadecimal and hex back to text, byte for byte in UTF-8.

HTML entities encode and decodeEscape HTML special characters or turn entities back into readable text.

IEEE 754 converterConvert a decimal number to its IEEE 754 bit pattern, or bits back to a number.

Intel HEX parserValidate Intel HEX records and extract their data as a hex dump.

JSON string escape and unescapeEscape raw text into a JSON string or parse JSON escapes back to readable text.

Keyboard shift cipherEncrypt text by shifting each letter to its neighboring key on a QWERTY keyboard.

LaTeX escapenewEscape or unescape the characters LaTeX reserves for markup, so plain text compiles cleanly.

Markdown table to CSVnewTurn a Markdown pipe table into CSV or JSON.

Markdown to LaTeXnewConvert Markdown into LaTeX source ready to compile.

Morse code translatorTranslate text to Morse code and Morse code back to text.

NATO phonetic alphabetSpell text in the NATO alphabet — Alfa, Bravo, Charlie — and read it back.

Octal converterConvert text to octal character codes and back.

Polybius squareTurn letters into 5×5 grid coordinates (A → 11) and back, with an optional keyword.

Punycode converterConvert internationalized domain names to punycode (xn--) and back.

Quoted-printable decoderDecode =C3=A9 escapes and soft line breaks from e-mail source — or encode your own.

Rail fence cipherEncrypt and decrypt the classic zigzag transposition with a configurable rail count.

RC4 cipherEncrypt and decrypt text with the RC4 stream cipher and a key — hex out, text back.

ROT cipherRotate letters by any amount from 1 to 25 with a slider — a variable ROT13.

ROT13 / Caesar cipherShift letters through the alphabet by any amount, ROT13 by default.

ROT47 cipherEncode or decode text with the ROT47 cipher, right in your browser.

Semaphore flag alphabetnewConvert text to the flag semaphore alphabet and back to letters.

SEPA QR payment generatornewTurn a name, IBAN and amount into a scannable SEPA (EPC069-12) payment QR code.

Tap codeEncode or decode messages using tap code, the classic communication method.

Timezone converterConvert a date and time from one time zone to another, with the UTC offset shown for both.

Two's complement converterConvert an integer to its two's complement bit pattern at a chosen width, or decode bits back to a number.

Unicode character inspectorBreak text into individual characters and see the code point, name, block, category and byte size of each.

Unicode escapeConvert characters to \uXXXX escape sequences and decode them back to text.

Unix timestamp converterConvert Unix timestamps to readable dates and dates back to timestamps.

URL encode and decodePercent-encode text for URLs and decode escaped addresses back to plain text.

URL link obfuscatorRewrite a URL into a percent-hex escaped form that still works when clicked.

UUencode / UUdecodenewConvert text or binary data to a uuencoded ASCII block, or decode one back.

Vigenère cipherEncrypt and decrypt text with the classic Vigenère keyword cipher.

Vigenere cipher solvernewRecover the key and decrypt Vigenere-enciphered text without knowing the key in advance.

VIN decodernewDecode a vehicle identification number into its country, manufacturer, model year and check digit.

XOR cipherXOR every byte of your text with a repeating key — encrypt and decrypt in one tool.

Encoding & conversion

Encoding problems have a way of appearing at the worst moment: a Base64 blob in an API payload you need to inspect, a URL-encoded query string full of %20s, HTML entities garbling an imported article, a Unix timestamp that means nothing to a human. The converters here decode and encode Base64 and Base32, URL encoding, HTML entities, hex, binary and character codes, translate Morse code, apply classic ROT13 and Atbash ciphers, and turn timestamps into readable dates and back.

Every converter is UTF-8 safe — accented letters, Cyrillic and emoji round-trip correctly instead of turning into mojibake, which is where many older online converters quietly fail. Conversions run in both directions and update live as you type.

There is a real privacy advantage to doing this locally: encoded payloads often contain tokens, credentials or personal data, exactly the things you should not paste into a converter that ships them to a server. Here the decoding happens in your browser and the data never leaves your machine — check the network tab if you like.