🔐Base64 Encoder/Decoder
Encode and decode Base64 strings.
🆓 Free🔒 Secure⚡ Instant📱 Mobile-friendly🚫 No signup
Encode or decode Base64 strings online for free. Works for text and files. Fast and private.
Plain text0 chars
How to Use Base64 Encoder/Decoder — Step by Step
- 1Paste your plain text or Base64-encoded string into the input
- 2Click 'Encode' to convert text to Base64, or 'Decode' to reverse it
- 3The result appears instantly in the output field
- 4Click 'Copy' to copy the encoded or decoded value
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Frequently Asked Questions
Is this tool completely free?
Yes. All ToolNest tools are 100% free with no signup required, no account, and no watermarks added to output files.
Are my uploaded files secure and private?
All uploads use HTTPS encryption during transfer. Files are processed on secure isolated servers and automatically deleted within 2 hours of upload.
Does this tool work on mobile phones?
Yes. ToolNest works on any modern browser on iPhone, Android, tablet, or desktop — no app download or plugin needed.
Do I need to create an account?
No. Just open the tool, upload your file, and download the result. No email, no signup, no password.