Hash Generator
Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes from any text. Uses the browser Web Crypto API — secure, instant, no server.
SHA-1
Legacy — fine for non-security checksums, not for crypto.
SHA-256
Modern default — TLS, Bitcoin, JWT signing.
SHA-384
Truncated SHA-512, used in some TLS cipher suites.
SHA-512
Strongest in the SHA-2 family.
Hash Generator runs 100% in your browser
Your files are never uploaded to any server. All processing happens locally on your device using modern browser technology. Private, fast, and free.
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How to Generate SHA-1, SHA-256, SHA-384, SHA-512 Hashes from Text
Open the Hash Generator
Navigate to the tool. Browser-side hashing — no signup, no server.
Paste your input text
Drop any text into the input box: a password, an API key, a file’s contents, any string.
See all hashes at once
The tool computes SHA-1, SHA-256, SHA-384, and SHA-512 in parallel. Results appear as you type.
Copy the hash you need
Click any hash row to copy it to your clipboard. The hex digest is ready to paste anywhere.
Pro Tips
- •SHA-256 is the modern default — used in TLS certificates, Bitcoin, JWT signing, and most checksum scenarios.
- •SHA-1 is broken for security but still used for non-security checksums (Git commit IDs, legacy systems). Do not use it for passwords or signing.
- •MD5 is intentionally excluded — it is cryptographically broken and should not be used. If a system requires MD5, push to upgrade.
- •Hashes are one-way: you cannot recover the original input. Salt + hash + slow KDF (bcrypt, argon2) is the right pattern for passwords — plain SHA-256 is not.
- •For file verification: hash a downloaded file’s contents and compare against the published hash on the release page.
Who needs Hash Generator?
Students
Academic work and assignments
Professionals
Business and office tasks
Creatives
Design and content creation
Everyone
Personal everyday tasks
When to Use Hash Generator
Checksum verification
Verify a downloaded file or string matches an expected hash from a documentation page or release notes.
API key fingerprints
Generate a hash fingerprint of an API key or secret for logging and audit trails without exposing the key itself.
Cache key generation
Hash a long input (URL, query, payload) into a fixed-length cache key suitable for filesystem paths or cache lookups.
Git and version control
Compute SHA-1 of file contents the same way Git does to verify commit or blob identifiers.
Frequently Asked Questions
What is a hash function?
A function that takes any input and produces a fixed-length output (the digest). Same input always gives the same output, but you cannot reverse the digest back to the input.
Which SHA algorithm should I use?
SHA-256 for almost everything in 2025+. SHA-384 and SHA-512 only when explicitly required by a spec or for extra-paranoid systems. SHA-1 only for compatibility with legacy non-security uses.
Why is MD5 not included?
MD5 has known collisions and is unsuitable for any security purpose. Including it would encourage misuse. If you need MD5 for legacy compatibility, openssl or md5 from the command line will do.
Is hashing the same as encryption?
No. Encryption is reversible with a key. Hashing is one-way — designed so you cannot recover the input from the output.
Where does the hashing happen?
Entirely in your browser using the Web Crypto API (crypto.subtle.digest). Your input text never leaves your device.
Hash Generator vs Alternatives
Hash generation is a one-line operation in most environments, but a quick web tool is convenient for spot-checks.
openssl / shasum (CLI)
Built into macOS and Linux
Key difference: Fast for files but requires terminal access and remembering flags. Hashing arbitrary text from the command line is awkward.
Other online hash sites
Many ad-heavy
Key difference: Some compute only one algorithm at a time. Privacy varies — some send input to a server.
Editor extensions
VS Code, Sublime plugins
Key difference: Requires installing extensions and remembering hotkeys. Not portable across machines.
All four SHA variants computed in parallel, live updates as you type, secure Web Crypto API, nothing sent to a server.
Good to know
- All processing happens in your browser. Very large files may be slower on mobile devices or older computers.
- Results depend on the quality and format of your input. For best results, use high-quality source files.
- Once you close the browser tab, all data is gone. Make sure to download your results before closing.
Key Features
100% Free
No hidden fees, no premium tiers, no limits on how much you use it. Free today, free tomorrow, free forever.
Complete Privacy
Your files never leave your device. Everything is processed locally in your browser — we physically cannot access your data.
No Registration
Start using the tool immediately. No account, no email, no personal information required. Just open and use.
Works Everywhere
Compatible with Chrome, Firefox, Safari, and Edge on desktop and mobile. Works offline once the page has loaded.
Full Step-by-Step Guide
Detailed walkthrough with pro tips and best practices for getting the best results every time.
Read guideFrequently Asked Questions
Every common question answered — file limits, privacy, supported formats, compatibility, and more.
View FAQCompare Alternatives
See how Hash Generator stacks up against Adobe, Smallpdf, and other paid and free alternatives.
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