Back to Guides
productivity 4 min read· 2025-02-15

What is Base64 Encoding and How Does It Work?

A guide for developers explaining binary-to-text encoding, MIME types, and data URLs.

Base64 is a group of binary-to-text encoding schemes that represent binary data in an ASCII string format.

Sponsored

How 6-bit Chunks Work

Base64 takes 3 bytes (24 bits) of data and divides them into four 6-bit chunks, mapped to a 64-character table.

Try It Now For FreeBase64 Encoder / DecoderEncode/decode Base64
Launch Tool