Base64 Encoder
Encode plain text or UTF-8 strings into Base64 format.
Base64 output
Your result will appear here.
What is Base64 Encoder?
Base64 Encoder converts plain text and arbitrary UTF-8 strings into ASCII-safe Base64 representation per RFC 4648. It is widely used to encode API credentials for Basic Authorization headers, embed data into JSON, and format binary text. Base64 is an encoding format designed for safe text transport, not encryption; anyone can decode it instantly.
How to use Base64 Encoder
- 1Type or paste your text or credentials into the input box.
- 2The Base64 encoded string is generated instantly in real-time.
- 3Click Copy to save the Base64 output for HTTP headers, configs, or payloads.
Key features
Full UTF-8 & Unicode Support
Accurately converts multi-byte UTF-8 sequences including emojis and international characters.
RFC 4648 Standard Padding
Produces standard 64-character alphabet output with valid = and == padding characters.
Instant Live Conversion
Encodes text dynamically as you type without latency or page reload.
100% Client-Side Privacy
Conversion runs strictly in client-side JavaScript memory with zero network overhead.
Examples & use cases
Basic Authentication String
Encoding username and password credentials for HTTP headers
admin:secret123
YWRtaW46c2VjcmV0MTIz
Unicode & Emojis
Encoding multi-byte international text and emojis
Hello, 世界! 🚀
SGVsbG8sIOS4lueVjCEg8J+agA==
Frequently asked questions
Helpful guides & tutorials
Related tools
Decode Base64-encoded strings back to plain text and UTF-8.
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Decode percent-encoded URL strings and query parameters to plain text.