Base64 Encode – Convert Text to Base64 Instantly

Perfect for developers, QA testers, and data handlers who need a fast, reliable way to encode text into Base64. Full UTF-8 support ensures Japanese, emoji, and non-Latin scripts encode correctly without corruption.

Open the Tool

Why use Base64 Encode?

Instant encoding with real browser-side processing – no uploads

Full UTF-8 support for Japanese, Chinese, Korean, emoji, and special symbols

Accurate and standard-compliant Base64 output (RFC 4648)

Clean and simple interface, works on desktop and mobile

Free forever, with no sign-up or usage limits

How it works

  1. Type or paste your text into the input box.
  2. Click the 'Encode to Base64' button.
  3. Copy the encoded Base64 result below.
  4. Use it in APIs, data URIs, JWT sections, or wherever needed.

FAQ

Does this Base64 encoder support Japanese characters?

Yes. The tool always encodes your input as UTF-8 before applying Base64, so Japanese kana, kanji, emoji, and any Unicode characters are converted accurately.

Is my text sent to a server?

No. Encoding happens entirely in your browser. Your input never leaves your device, ensuring full privacy.

What is the difference between UTF-8 and standard ASCII Base64 encoding?

Standard ASCII encoding only handles 7-bit characters. When you input Japanese or other Unicode text, UTF-8 encoding first converts characters into bytes, preserving all data correctly before Base64 conversion.

Can I use this output in JSON or URLs?

Base64 output may contain '+', '/', and '='. For URLs, you'll need to URL-encode those characters. For JSON, Base64 is safe as a string value.