What is Base64 Encode/Decode?
Encode text to Base64 or decode it back. Unlike many simple tools, this handles UTF-8 correctly, so emoji, Hindi, Arabic and Chinese characters survive the round trip intact instead of turning into corrupted symbols.
How to use Base64 Encode/Decode
- Paste your text or Base64 string into the box.
- Click “Encode →” to convert text to Base64, or “← Decode” to convert it back.
- Copy the result.
Why use this tool?
Correct UTF-8 handling
Naive Base64 tools corrupt anything outside basic Latin. This encodes through UTF-8 first, so any language or emoji round-trips perfectly.
Credentials stay local
Base64 often wraps auth headers and tokens. Decoding them on a remote server would leak them; here they never leave your browser.
Frequently asked questions
Is Base64 encryption?
No — and this matters. Base64 is reversible encoding with no key, so anyone can decode it instantly. Never use it to protect passwords or sensitive data.
Why is Base64 output longer than the input?
Base64 represents every 3 bytes as 4 characters, so encoded data is about 33% larger. That is the cost of making binary data safe for text-only channels.