Base64 Encoder & Decoder Online
Encode text to Base64 or decode Base64 back to readable text instantly — with UTF-8 support and 100% client-side processing.
How to Encode or Decode Base64
Type or paste text and click Encode to get its Base64 representation, or paste Base64 and click Decode to read the original text. Both directions work instantly.
Useful for transferring data in URLs, email, or JSON, and for working with APIs.
- Paste your text or Base64 string
- Click Encode or Decode
- Copy the result
Private and Local
Encoding and decoding run entirely in your browser. Sensitive strings are never transmitted, making it safe for API keys, tokens, and configuration values.
Frequently Asked Questions
Can I decode UTF-8 text like Nepali or Hindi?
Yes — the decoder handles Unicode (UTF-8) correctly, including Devanagari characters.
What is Base64 used for?
It encodes binary or text data into ASCII for safe transmission in URLs, emails, JSON, and APIs.
Is it really client-side?
Yes — everything is processed locally in your browser with no server involved.