- Select one or more hash algorithms from the dropdown menu (MD5 and SHA-256 are selected by default).
- Choose between Text mode or File mode using the tabs.
- For text: Type or paste your content into the input field. Hash values are calculated in real-time.
- For files: Click or drag a file to the upload area. The tool will calculate hashes for the entire file.
- View the results in both lowercase and uppercase formats. Click the copy button to copy any hash value.
What is a hash function?
A hash function is a one-way cryptographic algorithm that converts input data of any size into a fixed-size string of characters. Hash functions are essential for data integrity verification, password storage, digital signatures, and blockchain technology.
Is Hash Generator free to use?
Yes, Hash Generator is completely free to use with no limitations. All hash calculations are performed locally in your browser, requiring no registration or payment. You can generate unlimited hashes for both text and files.
What is the difference between MD5, SHA-1, and SHA-256?
MD5 produces a 128-bit hash (32 hex characters), SHA-1 produces 160-bit (40 hex characters), and SHA-256 produces 256-bit (64 hex characters). SHA-256 is more secure and collision-resistant than MD5 and SHA-1, which have known vulnerabilities.
Is my data safe when using this tool?
Yes, your data is completely safe. All hash calculations are performed entirely in your browser using JavaScript. Your text and files are never uploaded to any server, ensuring complete privacy for sensitive data.
Can I reverse a hash to get the original data?
No, hash functions are designed to be one-way and irreversible. It is computationally infeasible to reverse a hash back to its original input. This property makes hashes useful for password storage and data integrity verification.
Bcrypt Password Hashing Complete Guide【2026】- Security Principles, Cost Factor & Best Practices
Master Bcrypt password hashing algorithm. Learn salt generation, cost factor tuning, hash structure breakdown. Compare Bcrypt vs Argon2 vs Scrypt. Complete code examples for Node.js, Python, Java included!
Geohash Core Principles & Applications【2026】- Geospatial Indexing Guide
Master Geohash for efficient geospatial indexing and proximity searches. Learn core principles, encoding/decoding algorithms. Complete JavaScript/Python/Java code examples!
Geohash Explained【2026】- GPS Encoding Guide with Interactive Map Tool
Master Geohash algorithm for GPS coordinate encoding. Free online Geohash encoder/decoder with interactive map. Learn proximity searches, spatial indexing, location sharing with code examples!
Hash
Hash is a mathematical function that converts input data of any size into a fixed-size string of characters, producing a unique digital fingerprint that is practically impossible to reverse-engineer back to the original data.
Geohash
Geohash is a geocoding system that encodes geographic coordinates (latitude and longitude) into a short string of letters and digits. It was invented by Gustavo Niemeyer in 2008 and provides a hierarchical spatial data structure that divides the world into a grid of cells.