Developer Tool
Base64 Converter
Encode text to Base64 or decode Base64 back to plain text. Supports URL-safe variant.
Plain Text13 B
Base64 Output
20 B
SGVsbG8sIFdvcmxkIQ==
How it works
01
Pick Mode
Choose Encode to convert text to Base64, or Decode to reverse it.
02
Choose Variant
Standard uses +/ chars. URL-safe replaces them with -_ (no padding).
03
Copy & Swap
Copy the result or use Swap to flip input/output and reverse the operation.
Real-time Conversion
Output updates instantly as you type — no button press needed.
URL-safe Mode
Produces Base64 safe for use in URLs and filenames (RFC 4648).
Swap & Reverse
One-click swap lets you reverse encode/decode with the current output.