Base64 Encoder & Decoder Online

Instant online Base64 text and binary data encoder and decoder with UTF-8, URL-safe Base64URL, and hex output support for secure data transmission.

How to Use Base64 Encoder & Decoder Online

  1. Input Text or Binary String: Enter plain text, ASCII characters, or hexadecimal bytes to convert.
  2. Select Encoding Variant: Choose Standard Base64 (with + and /) or URL-Safe Base64 (with - and _).
  3. Instant Conversion & Copy: View the padded radix-64 representation and copy the result with one click.

Frequently Asked Questions

What is Base64 encoding?

Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format by translating it into a radix-64 representation.

Is Base64 an encryption algorithm?

No. Base64 is purely an encoding format to transfer binary data over text-only protocols. It provides zero confidentiality and can be decoded by anyone instantly.

What is URL-safe Base64?

Standard Base64 uses + and / characters which have reserved meanings in URLs. URL-safe Base64 substitutes - and _ in their place to prevent routing conflicts.