Base64 Encoder / Decoder

Encode text to Base64 or decode Base64 back to text.

All Base64 conversion happens locally in your browser. No data is sent to our servers.

Plain Text Input

Generate URL-safe Base64 (replaces + with - and / with _)

Base64 Output

Encode plain text into Base64 format or decode Base64 strings back to readable text. Base64 is commonly used by developers to encode data so it can be safely transmitted over media that are designed to deal with textual data.

How to Use

Select either the 'Encode' or 'Decode' tab.
Paste your text or Base64 string into the input area.
The conversion happens instantly. You can enable URL-safe Base64 when encoding to safely pass the string in web URLs.

Examples

URL-Safe Base64

Standard Base64 uses '+' and '/'. URL-safe Base64 replaces these with '-' and '_' respectively to prevent URL parsing errors.

Related Tools

JSON Formatter
UUID Generator
JWT Decoder