Does it support UTF-8?

Yes. The tool handles full UTF-8 encoding including multi-byte characters like emoji, Chinese, Japanese, and Korean text.

Why is Base64 output larger?

Base64 encoding increases size by ~33% because it represents binary data using only 64 ASCII characters.

Does it support UTF-8?

Yes. The tool handles full UTF-8 encoding including multi-byte characters like emoji, Chinese, Japanese, and Korean text.

Why is Base64 output larger?

Base64 encoding increases size by ~33% because it represents binary data using only 64 ASCII characters.

無料

Base64エンコーダー/デコーダー

テキストをBase64にエンコードまたはBase64からテキストにデコード。UTF-8対応。

100%無料登録不要ブラウザで実行

モード：テキスト → Base64

テキスト入力

Base64出力

出力がここに表示されます...

Base64 Encoder / Decoderについて

Encode text to Base64 or decode Base64 back to readable text. Supports full UTF-8 including emoji and CJK characters. Shows byte size comparison between input and output.

よくある質問

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LaunchChatはウィジェット認証でのセキュアなトークンエンコーディングにBase64を使用しています。

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