Guide
Base64 Encoder / Decoder online
Encode readable text into Base64 or decode Base64 back into UTF-8 text. The tool supports Unicode text and reports invalid Base64 input clearly.
developer tool
Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 strings instantly.
0 / 200,000 characters
How to use Base64 Encoder / Decoder
Choose a mode
Select Encode or Decode depending on the conversion you need.
Enter text
Paste readable text or a Base64 string into the input area.
Copy the result
Copy the converted output or swap modes to continue transforming it.
Common uses for Base64 Encoder / Decoder
- Encoding small payloads
- Decoding API samples
- Inspecting configuration values
- Testing data transformations
Why use this developer tool?
- Encode and decode without backend requests.
- Handle UTF-8 text correctly.
- Catch invalid Base64 input with a clear message.
- Swap modes quickly while working.
Base64 Encoder / Decoder FAQ
Does this support Unicode text?
Yes. Text is encoded and decoded as UTF-8.
What happens with invalid Base64?
The tool shows a validation message and leaves the result empty.
Is Base64 encryption?
No. Base64 is an encoding format, not encryption.