Decode Base64 To String
Base64 Decoder is a free online Decoding Tools tool that decode Base64 (standard or URL-safe) back to text or bytes instantly in your browser. Paste your data, adjust the options and get the result in real time — no installation, no sign-up, and nothing is ever uploaded to a server. The conversion runs both ways in your browser: input format A on the left, format B on the right, instantly.
How to use
Using Base64 Decoder takes three steps:
- Paste your data into the input box (or load the example).
- Configure the options to match your target format or scenario.
- Copy, download or inspect the output — it updates live as you type.
- The conversion runs both ways in your browser: input format A on the left, format B on the right, instantly.
Examples
SGVsbG8sIFdvcmxkIQ==
Use cases
- Decode Base64 (standard or URL-safe) back to text or bytes.
- Because everything is computed client-side, Base64 Decoder is safe to use with sensitive data such as API keys, tokens or private logs.
FAQ
What is Base64 Decoder?
Base64 Decoder decode Base64 (standard or URL-safe) back to text or bytes. It runs entirely in your browser, so your data stays private.
Is Base64 Decoder free to use?
Yes. Base64 Decoder is free, unlimited and works without registration or installation.
Does my data get uploaded?
No. All processing happens locally in your browser; nothing is sent to any server.
Runs 100% in your browser — your data never leaves your device.