Base64 Encoder/Decoder
Instantly encode plain text into Base64 format or decode Base64 strings back to readable text with UTF-8 support.
Base64 Encoder/Decoder
This calculator auto-updates when values change.
About This Base64 Encoder/Decoder
This Base64 encoder and decoder converts readable text into Base64 and decodes Base64 strings back into plain text.
It is useful for testing API payloads, embedding small text values, checking encoded tokens, and debugging developer workflows.
How to Use This Tool
- 1
Choose encode or decode
Select the direction that matches the text you are working with.
- 2
Paste your input
Enter plain text for encoding or a Base64 string for decoding.
- 3
Review the output
The converted result appears instantly and can be copied for use elsewhere.
Frequently Asked Questions
Is Base64 encryption?v
No. Base64 is an encoding format, not encryption. Anyone can decode it if they have the string.
Does it support Unicode text?v
Yes. The calculator encodes and decodes UTF-8 text, including symbols and emoji.
Why does decoding fail?v
Decoding fails when the input is not valid Base64 or contains characters that do not belong in a Base64 string.