Base64 Decoder
Decode Base64 to text
Use this when you need a fast, accurate result — no sign-up, works entirely in your browser.
Decoded text—
How to Use
- Enter your details into the fields above.
- Click the calculate button to get your result instantly.
- Use the clear button to start a new calculation.
Example
- SGVsbG8gV29ybGQ= → Hello World
- aW4tZGVtYW5kdG9vbHMuY29t → in-demandtools.com
Formula
Decoding reverses the encoding: each group of four Base64 characters becomes three bytes, then those bytes are read back as UTF-8 text. Input that is not valid Base64 — wrong length, or characters outside the alphabet — is reported as "Invalid Base64" instead of producing garbled output.
About Base64 Decoder
Decode Base64 to text. This free online tool gives you fast, accurate results without registration or downloads.
Everything runs locally in your browser, so your data is never uploaded or stored — privacy first.
Frequently Asked Questions
Is the Base64 Decoder free to use? +
Yes, it is completely free with no registration or download required.
Is my text data private? +
Yes. All text processing happens locally in your browser. Your content is never uploaded or stored on our servers.
Does the Base64 Decoder work on mobile? +
Yes, it works on any device with instant, in-browser results.