Encoding Converter

Convert text between character encodings. Supports UTF-8, ISO-8859-1, Windows-1252, Shift-JIS and more with live hex preview.

Note: Encoding conversion uses the browser's built-in TextEncoder/TextDecoder. Some legacy encodings may not be available in all browsers. For best results, use UTF-8 as target encoding.

About Encoding Converter

Convert text between character encodings to fix garbled text, prepare data for legacy systems, or ensure proper encoding for international content. Supports modern and legacy encodings with hex preview.

Multiple Encodings

Supports UTF-8, ISO-8859-1, Windows-1252, Shift-JIS, UTF-16 LE/BE and more. Auto-detect source encoding.

Hex View

See the raw hex values before and after conversion. Perfect for debugging encoding issues and comparing byte representations.

Hex Input

Paste raw hex bytes as input for advanced use cases. Great for working with binary data or debugging malformed text.

100% Private

All conversion happens locally in your browser using native TextEncoder/TextDecoder APIs. No data uploaded anywhere.

📋 Common Use Cases

Pre-Analysis Data Prep

Clean CSV and spreadsheet data before analysis. Standardize formats, remove duplicates, and fix inconsistent values that would skew results.

PII Redaction

Remove or mask personally identifiable information before sharing datasets with third parties or publishing open data. Comply with privacy regulations.

Text File Parsing

Convert unstructured text files into organized columns. Extract structured data from logs, reports, or exported text dumps.

Database Cleanup

Prepare data for database import by fixing malformed records, standardizing field formats, and removing invalid characters.

🪜 How to Use This Tool

  1. Load your data
    Paste raw text or upload a file. The tool auto-detects delimiters and structure in CSV, TSV, and fixed-width formats.
  2. Choose cleaning operations
    Select what to do — remove duplicates, trim whitespace, anonymize PII, split columns, or standardize formats.
  3. Preview changes
    Review a before/after comparison of your data. Adjust cleaning rules if needed before applying to the full dataset.
  4. Download cleaned data
    Export as CSV, JSON, or copy to clipboard. Original data is never uploaded — all cleaning happens locally.

📚 Related Guides

Frequently Asked Questions

Is this data tool free?▼
Yes. All data tools are completely free. No signup needed.
Is my data sent to a server?▼
No. All data processing happens in your browser. Your JSON, CSV, SQL, and text data never leaves your device.
Can these handle large files?▼
JSON formatter and CSV tools comfortably handle files up to ~10MB in browser. Performance depends on your device for larger datasets.