Encoding Tools
Encode and decode data in various formats: Base64, URL, Hex, Binary, HTML Entity, Unicode, Base32/58/85, and more.
35 tools available, all running locally in your browser.
- ASCII Table Complete ASCII reference table (0-127) with decimal, hex, octal, binary, and character. Free, private, and 100% client-side.
- Base Converter Convert numbers between any base (2-36). Free, private, 100% client-side.
- Base32 Decoder Decode Base32 (RFC 4648) back to readable text online. Free, private, and 100% client-side.
- Base32 Encoder Encode text to Base32 (RFC 4648) online. Free, private, and 100% client-side.
- Base58 Decoder Decode Base58 (Bitcoin alphabet) back to readable text online. Free, private, and 100% client-side.
- Base58 Encoder Encode text to Base58 (Bitcoin alphabet) online. Free, private, and 100% client-side.
- Base64 Decoder Decode Base64 data back to readable text online. Free, private, and 100% client-side.
- Base64 Encoder Encode text or binary data to Base64 online. Free, private, and 100% client-side.
- Base85 Decoder Decode Ascii85 (Base85) back to readable text online. Free, private, and 100% client-side.
- Base85 Encoder Encode text to Ascii85 (Base85) online. Free, private, and 100% client-side.
- Base91 Decode Decode Base91 encoded text. Free, private, 100% client-side.
- Base91 Encode Encode text to Base91. Free, private, 100% client-side.
- Binary Decoder Decode binary (base-2) back to readable text online. Free, private, and 100% client-side.
- Binary Encoder Encode text to binary (base-2) online. Free, private, and 100% client-side.
- Charset Reference Reference table of character encodings. Free, private, 100% client-side.
- Hex Decoder Decode hexadecimal back to readable text online. Free, private, and 100% client-side.
- Hex Encoder Encode text to hexadecimal online. Free, private, and 100% client-side.
- HTML Entity Decoder Decode HTML entities back to readable text online. Free, private, and 100% client-side.
- HTML Entity Encoder Encode text to HTML entities online. Free, private, and 100% client-side.
- JWT Encoder Encode JWT with HS256. Free, private, 100% client-side. Not for server-side verification.
- MIME Decoder Decode MIME-encoded text (Base64 or Quoted-Printable) back to original content. Free, private, and 100% client-side.
- MIME Encoder Encode text to MIME format (Base64 or Quoted-Printable) for email content. Free, private, and 100% client-side.
- Morse Code Converter Convert text to Morse code and back. Free, private, 100% client-side.
- Octal Decode Convert octal (base-8) bytes back to text. Free, private, 100% client-side.
- Octal Encode Convert text to octal (base-8) byte representation. Free, private, 100% client-side.
- Punycode Decoder Decode Punycode (RFC 3492) text back to Unicode. Free, private, and 100% client-side.
- Punycode Encoder Encode Unicode text to Punycode (RFC 3492) with ACE prefix. Free, private, and 100% client-side.
- Quoted-Printable Decoder Decode Quoted-Printable text back to original content. Free, private, and 100% client-side.
- Quoted-Printable Encoder Encode text to Quoted-Printable format (RFC 2045). Free, private, and 100% client-side.
- ROT13 / Caesar Cipher ROT13 and configurable Caesar cipher for text. Free, private, 100% client-side.
- Unicode Converter Convert text to Unicode code points, UTF-8 hex, or UTF-16 hex online. Free, private, and 100% client-side.
- URL Decoder Decode percent-encoded URL text back to readable characters. Free, private, and 100% client-side.
- URL Encoder Percent-encode text for safe use in URLs. Free, private, and 100% client-side.
- UUdecode Decode UUencoded text. Free, private, 100% client-side.
- UUencode UUencode text for Unix-to-Unix transfer. Free, private, 100% client-side.