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Base64 Encoder

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Base 64, used in the computer field, is an encoding method that converts 6-bit binary data (e.g. executable files, ZIP files, etc.) into a series of strings composed only of characters in the common ASCII area that are not affected by character codes. It is a concept that refers to.


If you literally translate Base 64, it means base 64. What makes base 64 particularly interesting in computers is that 64 is a power of 2 (64 = 26), and among base numbers based on powers of 2, it is the largest base that can be expressed using ASCII characters displayed on the screen. In other words, the next square number, base 128, requires 128 symbols, but the number of ASCII characters displayed on the screen is less than 128.

How to Use Base64 Encoder

This tool encodes any text or binary data into a Base64 string. Simply paste your input text and the encoded output appears instantly.


What is Base64 Encoding?

Base64 is an encoding scheme that converts binary data into a sequence of printable ASCII characters. It uses 64 characters (A–Z, a–z, 0–9, +, /) to represent arbitrary binary data, making it safe to include in text-based formats like JSON, HTML, email, and URLs.


Common Use Cases

  • Embedding images directly into HTML or CSS as data URIs
  • Encoding binary attachments in email (MIME)
  • Passing data through URLs or HTTP headers without corruption
  • Storing binary data in JSON payloads

Example

Input:

Hello, Base64!

Encoded output:

SGVsbG8sIEJhc2U2NCE=

Why Use This Tool?

  • Browser-only: Your data never leaves your device — no server upload required.
  • Instant: Encoding updates in real time as you type.
  • Free: No account or sign-up needed.