Do I need an account?

No. Guests can use Base64 tools freely.

Is Unicode supported?

Yes. We encode UTF-8 bytes before Base64.

No. Anyone can decode Base64. Do not use it to hide secrets.

The input may have invalid characters or missing padding. Paste a clean Base64 string and try again.

In browser

Encode or decode Base64 text without uploading anything.

Free for guests — processing stays on this device.

Input

Output

Formats	Plain text · Base64
Tool	Base64 Encode Decode

Paste text or Base64, then encode or decode locally. Common for data URLs, API samples, and quick debugging — not a substitute for encryption.

Do I need an account?: No. Guests can use Base64 tools freely.
Is Unicode supported?: Yes. We encode UTF-8 bytes before Base64.
Is Base64 encryption?: No. Anyone can decode Base64. Do not use it to hide secrets.
Why did decode fail?: The input may have invalid characters or missing padding. Paste a clean Base64 string and try again.
Is it free?: Yes.

Nothing is uploaded. Encoding stays on your device.

Encode · In browser

Percent-encode URLs or decode query strings safely.