Base64 Encoder/Decoder

Convert text to Base64 or decode Base64 strings with this easy-to-use online tool. No signup required, instant encoding and decoding for secure data transmission.

About

Encoding

Convert plain text into Base64 encoded strings

Decoding

Convert Base64 encoded strings back to plain text

Toggle Mode

Switch between encoding and decoding modes easily

Copy Output

Quickly copy the encoded or decoded result to clipboard

Input Validation

Provides feedback on invalid input for Base64 decoding

Reference

Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It is commonly used for transmitting data over mediums that only allow text content. Base64 encoding converts binary data into a radix-64 representation, allowing it to be safely transmitted across networks and included in contexts such as emails or web pages.

Calculation

The Base64 encoding process involves converting binary data into a sequence of printable ASCII characters. This is achieved by dividing the binary data into 6-bit segments and mapping each segment to a corresponding character in the Base64 character set (A-Z, a-z, 0-9, +, /). The resulting Base64 string is typically longer than the original binary data due to the padding added during the encoding process.

Frequently Asked Questions

What is Base64 encoding used for?
Base64 encoding is commonly used for transmitting binary data over mediums that only allow text content, such as emails, web pages, or network protocols.
How does Base64 encoding work?
Base64 encoding converts binary data into a sequence of printable ASCII characters by dividing the binary data into 6-bit segments and mapping each segment to a corresponding character in the Base64 character set.
Is Base64 encoding reversible?
Yes, Base64 encoding is a reversible process. The Base64-encoded data can be decoded back to its original binary form using the opposite decoding process.
Is Base64 encoding secure?
Base64 encoding itself is not a secure encryption method. It is simply a way to represent binary data as text. For secure data transmission, Base64 encoding is often used in combination with other encryption methods.
What are some common use cases for Base64 encoding?
Base64 encoding is commonly used for embedding binary data in HTML documents, encoding email attachments, and transmitting binary data over protocols that only support text, such as HTTP or SMTP.