Base64 Encoder & Decoder

Encode text to Base64 or decode Base64 strings instantly in your browser. Supports standard and URL-safe Base64 — nothing is uploaded.

No data leaves your browser

Plain Text

Need URL encoding, query string tools or URL parser? Open the full URL Suite →

What is Base64?

Base64 is a binary-to-text encoding scheme that represents binary data using 64 printable ASCII characters (A-Z, a-z, 0-9, +, /). It is commonly used to transmit data over text-based protocols like email or HTTP.

What is URL-safe Base64?

URL-safe Base64 replaces + with - and / with _ to produce a string that can be used safely in URLs and file names without encoding.

Is this Base64 tool free?

Yes, completely free. No signup or account required.

Is my data safe?

All encoding and decoding happens entirely in your browser. No data is uploaded to any server.