ToolPuma Logo

Base64 Encoder

Encode text to Base64.

What Is a Base64 Encoder?

The Base64 Encoder converts plain text into Base64, a binary-to-text encoding scheme that represents binary data using 64 ASCII characters (A-Z, a-z, 0-9, +, and /). Base64 is widely used to safely embed binary data in text-based protocols such as email attachments, JSON payloads, and data URIs. This free online tool is useful for Base64 encoder, encode Base64 online, text to Base64. Common use cases include APIs, JSON, email MIME data, data URIs, and binary-to-text workflows. It is designed for quick browser-based hashing, encoding, decoding, encryption testing, checksum comparison, identifier generation, and cryptography education. For production security, follow the algorithm's current standards, key-management requirements, and application-specific security guidance.

How to Use This Base64 Encoder

  1. 1
    Choose the operationSelect encode or decode according to the data you have.
  2. 2
    Paste the inputEnter the text or Base64 value into the input field.
  3. 3
    Check the formatFor Base64url, use the URL-safe '-' and '_' alphabet.
  4. 4
    Review the resultThe converted data appears immediately in the browser.
  5. 5
    Copy the outputUse it in your API test, JWT inspection, data URI, or development workflow.

Frequently Asked Questions

Base64 encodes 3 bytes into 4 characters. When the input length is not a multiple of 3, one or two '=' characters are added at the end to pad the output to a multiple of 4 characters.
No. Base64 is an encoding, not encryption. Anyone can decode it instantly. It exists to make binary data safe for text-based systems, not to hide information.

Related Developer Tools Tools

Base64 Decoder

Decode Base64 back to text.

Base64 URL Encoder

Encode text to URL-safe Base64.

Base64 URL Decoder

Decode URL-safe Base64 back to text.

Hex Encoder

Encode text to hexadecimal.

Hex Decoder

Decode hexadecimal back to text.

Binary Encoder

Encode text to binary (0s and 1s).

More Developer Tools Tools

Binary Decoder

Decode binary back to text.

HTML Entity Encoder

Convert text to HTML entities.

HTML Entity Decoder

Convert HTML entities back to text.

ASCII to Hex

Convert ASCII text to hexadecimal.

Hex to ASCII

Convert hexadecimal back to ASCII text.

ASCII to Binary

Convert ASCII text to binary.