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Generate SHA-256 and SHA-1 hashes from text.
A hash function turns any input into a fixed-length fingerprint. The same input always produces the same hash; even tiny input changes produce totally different hashes. This tool generates SHA-256 and SHA-1 using your browser's SubtleCrypto API.
MD5 and SHA-1 are cryptographically broken — collisions (two inputs with the same hash) can be found. SHA-256 is still secure as of 2026. For anything security-critical, use SHA-256 or stronger.
You can hash "hello" into a SHA-256, but you cannot reverse the hash back to "hello" (without brute force). This one-way property is what makes hashes useful for passwords — even if a database leaks, attackers only get hashes.
The Hash Generator (SHA-256) creates sha256 generator on demand, right in your browser. Set the options you need, click generate, and the result is ready to copy. Because everything runs locally, nothing you enter or produce leaves your device.
Generators like this are useful when you need a specific output (a password, a UUID, a QR code, placeholder text) and don't want to install an app or trust an unknown website with your data. This tool is free, has no usage limits, and works the same on phone and desktop.
Common uses: people reach for this tool when they need to use a sha 256 hash generator online, sha 1 hash from text, text to sha256 converter, or cryptographic hash generator.
Browser-based tools like this one have a few real advantages over installed software or manual methods:
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