SHA-1 Hash Generator
Type or paste your text to get its SHA-1 hash instantly. The digest is computed in your browser, so your input never leaves your device.
- SHA-1
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- MD5
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- SHA-256
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- SHA-384
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- SHA-512
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More presets
Jump to another preset — each opens its own page ready to go:
How to generate a SHA-1 hash
- Type or paste your text into the box above — it stays in your browser and is never uploaded.
- The SHA-1 digest is computed instantly in your browser and shown below.
- Copy the hash you need; the other algorithms are listed too.
About SHA-1 hashes
A SHA-1 hash is a fixed-length fingerprint of your input, used to verify file integrity, detect changes or compare data without revealing it. The same input always yields the same digest.
It is computed locally in your browser, so your text never leaves your device. For security-sensitive uses choose SHA-256 or stronger — MD5 and SHA-1 are cryptographically broken and suited only to non-security checksums.
SHA-1 produces a 160-bit digest, written as 40 hexadecimal characters — longer than MD5's 32 but shorter than SHA-256. It is considered cryptographically broken: a practical collision (two different inputs sharing one hash) was demonstrated by the SHAttered attack in 2017, so it has been deprecated for signatures, certificates, and any security use. In practice you'll still meet it in legacy Git object IDs and older download checksums, which is where this generator is handy — for verifying or matching existing hashes, never for protecting new data.
Frequently asked questions
How do I generate a SHA-1 hash?
Type or paste your text into the box and the SHA-1 digest appears instantly below, ready to copy — computed entirely in your browser.
Is my input sent to a server?
No. Hashes are computed locally in your browser, so your text never leaves your device and nothing is stored online.
What is a SHA-1 hash used for?
A hash is a fixed-length fingerprint of your input, used to verify file integrity, detect changes, or compare data without revealing it. The same input always produces the same SHA-1 digest.
Can I generate other hashes too?
Yes. MD5, SHA-1, SHA-256, SHA-384 and SHA-512 are all shown at once, so you can copy whichever you need.
Is SHA-1 safe to use, and why does my output look the same length as MD5 with extra characters?
No — SHA-1 is broken for security since the 2017 SHAttered collision, so use SHA-256 for anything that matters. Its output is always 160 bits (40 hex characters), which is 8 characters longer than MD5's 32, so use SHA-256 or SHA-512 instead.