Base64 Encode / Decode
Encode plain text to Base64 or decode Base64 back to text.
How to encode and decode Base64 online
Paste your text and click Encode to turn it into a Base64 string, or switch to Decode and paste a Base64 string to recover the original text. Everything runs in your browser instantly — no software to install, nothing uploaded to a server, and no sign-up. Copy the result with one click.
When you'd use Base64 encoding
Base64 is used to embed images and fonts directly in CSS or HTML (data URIs), to send binary data inside JSON or XML, to encode email attachments (MIME), and to store small blobs in config files or URLs. It converts data into 64 safe ASCII characters so it survives systems that only handle text.
Is Base64 the same as encryption?
No. Base64 is reversible encoding, not encryption — anyone can decode it back to the original. Never treat it as a way to hide passwords or secrets. Use it for transport and storage compatibility, and use real encryption when you need to keep data private.
Related Tools
Frequently Asked Questions
What is Base64 encoding?
Base64 represents binary or text data using 64 printable ASCII characters, so it can travel safely through systems that expect text.
How do I decode a Base64 string?
Paste the Base64 text, switch to Decode, and the original text appears instantly.
Is it safe to encode sensitive data here?
Encoding happens entirely in your browser — nothing is uploaded. Note that Base64 is encoding, not encryption, so it isn't a security measure.
Is the Base64 tool free?
Yes, 100% free with no sign-up and no limits.