Tech
Base64 Encoder Decoder
This Base64 encoder decoder tool helps you encode plain text to Base64 and decode Base64 back to text using UTF-8 assumptions.
Quick answer
Encoding uses UTF-8 text input before Base64 conversion.
What this tells you
- •Encoding uses UTF-8 text input before Base64 conversion.
- •Decoding attempts UTF-8 text reconstruction from Base64 input.
- •Invalid Base64 input returns a clear error state.
How to Use
- 1Paste text into the input area.
- 2Choose Encode Base64 or Decode Base64.
- 3Copy the output result.
How It Works
Formula
Encode: UTF-8 bytes -> Base64
Decode: Base64 -> UTF-8 bytes -> textThe tool converts text using UTF-8 byte encoding and Base64 transforms in the browser, with no server-side processing.
Calculation note: values are processed in the order shown above, using the current input units.
Worked Examples
Encode text
Inputhello world
ResultaGVsbG8gd29ybGQ=
Frequently Asked Questions
It uses UTF-8 assumptions when converting between text and Base64.
The decoder returns a clear invalid-input error message.
No. Encoding and decoding run entirely client-side.