Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 strings online — free, instant, no install. Full Unicode support. See both results side by side.
Input
Base64 Encoded
Base64 Decoded
You might also like
😄 Free thanks to ads
What is Base64?
- Encoding: Converts plain text into a Base64 string made up of 64 safe characters (A–Z, a–z, 0–9, +, /). Used to safely transmit data in text-only environments like email, APIs, and URLs.
- Decoding: Restores a Base64 string back to its original text. If you receive data that looks like random letters and numbers, try decoding it to reveal the actual content.
Features
- Live Conversion: Results update as you type
- Full Unicode Support: Works with any language, emoji, and special characters
- Side-by-Side View: See both encoded and decoded results at once
How to Use
- Type or Paste: Enter text to encode or a Base64 string to decode
- See Results: Both results appear instantly in real time
- Copy: Click Copy on whichever result you need
Use Cases
- API Auth: Used in HTTP Basic auth headers and JWT tokens
- Data Transfer: Safely encode data for URLs
- Email: MIME encoding for attachments and headers
- Debugging: Quickly decode Base64 data to inspect its contents
Help us improve this tool
More iTool Features!
Character Counter
Free online character counter — count characters, words, sentences, and bytes in real time. No install, no signup.
JSON Parser / Formatter
Free online JSON parser. Validate, pretty-print, and minify JSON in real time with syntax highlighting and error location. 100% client-side.
YAML ↔ JSON ↔ TOML Converter
Live 3-way converter between YAML, JSON, and TOML. Smart schema detection for Kubernetes, Docker Compose, GitHub Actions, plus YAML pitfall warnings (Norway problem, octal, sexagesimal). 100% browser-based.
XML Parser / Formatter
Free online XML parser with real-time validation, collapsible tree view (+/-), pretty print, and syntax highlighting for elements, attributes, text, and CDATA. 100% browser-based.
JSON ↔ XML Converter
Live 2-way converter between JSON and XML. Configurable attribute prefix and text node key. 100% browser-based, no upload.
EPUB to TXT Converter
Extract text from EPUB eBooks instantly. Free browser-based EPUB to TXT conversion — no install, no server upload, chapter by chapter.
Text Diff
Free online text diff tool — compare two texts side by side and spot every difference instantly. No install, no signup.