How to Hash Data
- 1Upload your CSV file
- 2Select columns to hash and hash algorithm
- 3Download CSV with hashed values
Hash CSV Data - Generate MD5, SHA-256 Hashes Online
Generate cryptographic hashes for CSV data. Create MD5, SHA-256, SHA-512 hashes. Free CSV hasher. Verify data integrity. 100% private.
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Hash Data
SHA-256 hash specific columns permanently.
Upload your files
Drag & drop or click to browse
Max 1 file(s).csv
Why Use This Tool?
- ✓Multiple Algorithms - MD5, SHA-1, SHA-256, SHA-512
- ✓Data Integrity - Verify files haven't changed
- ✓One-Way Encryption - Cannot be reversed
- ✓GDPR Tool - Hash personal identifiers
- ✓Browser-Based - No server upload
Frequently Asked Questions
What is hashing used for?
Hashing creates unique fingerprints for data. It's used for password storage, data integrity verification, and anonymizing identifiers while maintaining uniqueness.
Can hashes be reversed?
No! Cryptographic hashes are one-way functions. You cannot get the original value back from a hash.
Which algorithm should I use?
SHA-256 is recommended for most uses. MD5 is faster but less secure. SHA-512 is most secure but slower.