Encoding Converter
Convert text between 35+ character encodings - including UTF-8, UTF-16, ISO-8859 families, Windows code pages, KOI8-R/U, Shift-JIS, EUC-JP, GBK, Big5, EUC-KR, MacRoman, IBM437/850/866, and more. Paste text or upload a file to transcode between any two encodings. Browse by language category, swap directions, and download results - all processing runs locally in your browser, no uploads, no signup, completely free.
Convert text between 35+ character encodings - Unicode, Western European, Cyrillic, Japanese, Chinese, Korean, Arabic, Hebrew, Greek, and more. Paste text, upload a file, or choose sample text to get started. All processing is local in your browser.
Sample Text (click to load & convert)
Why Use Our Encoding Converter?
35+ Character Encodings Supported
The Encoding Converter supports over 35 different character encodings across 14 categories - Unicode (UTF-8, UTF-16), Western European (ISO-8859-1, Windows-1252), Cyrillic (KOI8-R, Windows-1251), Japanese (Shift-JIS, EUC-JP), Chinese (GBK, Big5), Korean (EUC-KR), Arabic, Hebrew, Greek, Thai, Vietnamese, and more. Convert between any two encodings with a single click.
Bidirectional Conversion with Category Browsing
Convert text between any pair of supported encodings in both directions. Browse encodings organized by language category - Unicode, Western, Cyrillic, Asian, and legacy DOS code pages. Each encoding includes aliases (e.g., "latin1", "cp1252", "sjis") and a brief description of its usage and region.
Smart Source Detection & Instant Results
Paste text, upload a file, or enter raw hex bytes to convert. The tool shows both the original and converted output side by side with clear labeling. Built-in sample text lets you immediately test conversions between any encoding pair to verify correctness before using your own data.
100% Private Browser-Based Processing
All encoding conversions run entirely in your browser using the native TextEncoder and TextDecoder APIs. Your text and files are never uploaded to any server - they stay on your device for complete privacy. No signup, no accounts, no usage limits, and no data logging. Completely free forever.
Common Use Cases for Encoding Converter
Legacy Database Migration
When migrating legacy databases containing Windows-1252, ISO-8859-1, or Shift-JIS encoded text to modern UTF-8 storage, use the Encoding Converter to transcode the exported data. This ensures that accented characters, CJK ideographs, and special symbols are preserved correctly in the new database without mojibake corruption.
Multilingual Website Localization
Localization engineers use the Encoding Converter to translate website content between different character encodings. Convert Russian content from KOI8-R to UTF-8, Japanese from Shift-JIS to UTF-8, or Chinese from GBK to Big5 for Traditional Chinese audiences - ensuring text renders correctly across all browsers and devices.
Legacy Document Recovery
Open legacy documents saved with DOS code pages (IBM437, IBM850), MacRoman, or regional Windows code pages in modern applications. First convert the text to UTF-8 using the correct source encoding, then save it in a modern Unicode format. This is essential for accessing historical documents, archived emails, and vintage software files.
Debugging Mojibake & Text Corruption
When text displays as garbled characters - like "é" instead of "é" or "{`æ-‡å-'x97`}" instead of "文字" - use the Encoding Converter to fix it. By converting from the actual encoding (often detected by the Text Encoding Detector tool) to UTF-8, you can recover the original text and eliminate mojibake in your applications.
Cross-Language Data Processing
Data scientists and analysts processing multilingual datasets often encounter files in different encodings. The Encoding Converter lets you normalize all text to UTF-8 before running NLP pipelines, sentiment analysis, or text classification. Consistent encoding prevents data loss and ensures accurate text processing across languages and scripts.
Embedded Systems & IoT Text Handling
Embedded developers working with devices that output text in specific encodings (like ISO-8859-1 for GPS coordinates or Windows-1252 for barcode readers) use the Encoding Converter to transform device output into UTF-8 for cloud integration, dashboard visualization, or mobile app display.
Understanding Encoding Conversion
What Is Encoding Conversion?
Encoding conversion is the process of transforming text from one character encoding to another. Each character encoding maps characters to specific byte sequences -UTF-8 uses variable-length encoding for all Unicode characters,Windows-1252 uses single bytes for Western European characters, andShift-JIS uses a mix of single and double bytes for Japanese text. When an application interprets bytes using the wrong encoding, the result is garbled text known as mojibake. The Encoding Converter translates text between any two of 35+ supported encodings while preserving the original characters.
How Our Encoding Converter Works
- Select encodings - Choose the source encoding (the encoding your text is currently in) and the target encoding (the encoding you want to convert to). Browse by category - Unicode, Western, Cyrillic, Japanese, Chinese, Korean, and more - or search by encoding name or alias.
- Provide input - Paste text directly, upload a text file, or choose from pre-loaded sample text. The tool reads your input and interprets it using the selected source encoding, converting it to the internal Unicode representation.
- Convert & copy - The tool re-encodes the Unicode text into the target encoding and displays the result. Copy the converted text to your clipboard or download it as a UTF-8 file for use in your application, database, or workflow.
Encoding Categories Explained
- Unicode encodings (UTF-8, UTF-16): The modern standard. UTF-8 is the dominant encoding on the web (>98% of pages), in modern applications, and in JSON, XML, HTML, and most APIs. UTF-16 is used natively by Java, JavaScript, .NET, and Windows. Converting to UTF-8 is the recommended target for maximum compatibility.
- Western and Central European (ISO-8859-1, Windows-1252, MacRoman): Single-byte encodings covering most European languages. Windows-1252 is the most common legacy Windows encoding and is a superset of ISO-8859-1 with additional printable characters in the 0x80-0x9F range.
- Cyrillic encodings (KOI8-R, Windows-1251, IBM866): KOI8-R is common on Unix/Linux for Russian text. Windows-1251 is the standard Windows Cyrillic encoding. IBM866 is used in legacy DOS systems. Converting legacy Russian text to UTF-8 ensures compatibility across all platforms.
- Asian encodings (Shift-JIS, EUC-JP, GBK, Big5, EUC-KR): Multi-byte encodings for Japanese, Chinese, and Korean scripts. Shift-JIS is the Japanese Windows standard. GBK/GB2312 are for Simplified Chinese. Big5 is for Traditional Chinese. EUC-KR is for Korean. Converting to UTF-8 is essential for mixing Asian and Latin text.
Privacy & Local Processing Guarantee
The Encoding Converter processes all data entirely within your browser using the native TextEncoder and TextDecoder Web APIs. Your text and files are never uploaded to any server - they are read using the FileReader API and processed locally on your device. There are no signup requirements, no usage limits, no premium features, and no data logging. The tool is completely free for any purpose - converting legacy text, fixing mojibake, or normalizing encodings for data processing.
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Frequently Asked Questions About Encoding Converter
An Encoding Converter transforms text from one character encoding to another. Character encodings define how characters are represented as bytes - for example, UTF-8, Windows-1252, and Shift-JIS all represent the same text differently at the byte level. Converting between encodings is essential when working with legacy data, international text, or systems that expect a specific encoding.
UTF-8 uses 1-4 bytes per character and is backward-compatible with ASCII - it is the dominant encoding on the web. UTF-16 uses 2 or 4 bytes per character and is used natively by Java, JavaScript, .NET, and Windows. Legacy encodings like Windows-1252 (1 byte per character) or Shift-JIS (1-2 bytes per character) are region-specific and can only represent a limited set of characters - converting them to UTF-8 preserves all characters.
Select the source encoding (what your text is currently in) and the target encoding (what you want to convert to). Paste your text or upload a file, click "Convert", and the tool will transcode the text. The result shows the converted output. You can copy it to your clipboard or download it as a file.
Yes. Click the "Upload File" tab, select a text file from your device (up to 1 MB), and the tool will read its contents using the FileReader API. All processing is local - the file is never uploaded to any server. After conversion, you can copy the result or download it as a UTF-8 file.
When a character in the source text cannot be represented in the target encoding (for example, converting Japanese characters to ISO-8859-1), the browser replaces it with a fallback character (usually "?" or the Unicode Replacement Character U+FFFD). The tool shows any lossy bytes in the output. For best results, always use UTF-8 as the target encoding when working with multilingual text.
ISO-8859-1 and Windows-1252 are identical for bytes 0xA0-0xFF but differ in the 0x80-0x9F range. In ISO-8859-1, these bytes are C1 control characters. In Windows-1252, they map to useful printable characters - smart quotes, the Euro sign (€), trademark (™), bullet (•), and en/em dashes. For practical web content, Windows-1252 is more commonly encountered.
Yes - 100% free, forever. No signup, no account, no premium tier, no usage limits, and no ads. Convert as much text as you need between any of the 35+ supported encodings. All processing is done locally in your browser with zero server uploads for complete privacy.
The tool accepts any text-based file format: .txt, .csv, .json, .xml, .html, .css, .js, .ts, .py, .go, .rs, .java, .md, .yaml, .yml, .log, .cfg, .ini, .conf, and more. Binary files and non-text formats (images, PDFs, archives) will produce garbled results since they are not plain text. Files up to 1 MB in size are supported.