テキストエンコード変換

変換 Text to Multiple Encoding フォーマットs

Different systems expect text in different フォーマットs: raw UTF-8 bytes (as hexadecimal), Base64-encoded for safe transmission, or percent-encoded for URLs. Switching between フォーマットs manually is slow and error-prone. This Text Encoding 変換er instantly 変換s any text into all three フォーマットs, letting you choose what you need.

Paste text and get the hexadecimal byte representation, Base64 encoding, and percent-encoded version simultaneously. Copy whichever フォーマット your system requires.

Three Encoding フォーマットs

UTF-8 Hex Bytes: The raw bytes of the text as hexadecimal. Each character becomes one or more hex pairs:

• A (ASCII) → 41
• é (accented) → c3a9 (two bytes)
• 😀 (emoji) → f09f98800 (four bytes)

This フォーマット is useful for:

• Debugging byte-level encoding issues
• Understanding how text is stored at the byte level
• Working with systems that expect raw UTF-8 bytes
• Cryptographic operations that work on byte streams

Base64: Text encoded in Base64, a standard encoding for transmitting binary data safely via text channels:

• Input: Hello, World!
• Output: SGVsbG8sIFdvcmxkIQ==

Base64 is used for:

• Embedding binary data in text (JSON, XML)
• Email attachments and message bodies
• Data URIs for images and resources
• API payloads that need text-safe encoding

Percent Encoding: URL-safe encoding where special characters become %XX sequences:

• Space → %20
• / → %2F
• Non-ASCII characters → UTF-8 bytes as percent sequences

Percent encoding is essential for:

• URL query parameters
• Form data submissions
• URL-safe string representations
• APIs requiring encoded parameters

Why You Need All Three フォーマットs

Different contexts require different encodings:

• Your API might need Base64-encoded payloads
• URL parameters must be percent-encoded
• Debugging bytes requires hex representation
• Without a 変換er, you need three different tools

This tool provides all three at once, saving time and reducing context switching.

Common Developer Workflows

API Request Debugging: Encode request data in the フォーマットs your API requires. Compare expected vs. actual encoding to debug transmission issues.

URL Parameter Encoding: 変換 query parameter values to percent-encoded フォーマット, then copy and construct your URL.

Base64 Data Embedding: 生成 Base64-encoded data to embed in JSON, JavaScript data URIs, or email messages.

Byte-Level Debugging: See the exact byte representation of text when debugging encoding issues, comparing with actual bytes from logs or network traces.

Data Migration: 変換 text to required フォーマットs before importing into different systems.

Cryptographic Testing: When testing crypto functions that work on byte streams, use the hex byte output.

Documentation & Examples: Show different encoding representations of the same text in documentation or specs.

All Three at Once

Enter text once, see all three フォーマットs 生成d simultaneously. Copy whichever フォーマット you need without re-encoding.

Handles Multilingual Text

Works with ASCII, accented characters, emoji, Chinese, Arabic, Cyrillic—any Unicode text. The 変換er properly handles multi-byte UTF-8 sequences for all characters.

Copy Individual フォーマットs

Each フォーマット has its own copy button, so you can quickly grab just the encoding you need.

100% ブラウザ-Based Processing

Encoding happens entirely in your ブラウザ using JavaScript's native TextEncoder API and standard encoding libraries. Your text never leaves your machine, making this safe for sensitive data.