SHA-1 Hash

Online tool for computing SHA-1 hash of text in hex and Base64 for legacy API and compatibility.

Обработка выполняется локально в браузере. Данные не отправляются на сервер.

For this tool, processing runs locally in your browser and data is not sent to the server.

SHA-1 Hash is a free online tool for computing SHA-1 from text or strings. Useful for legacy API and compatibility. Processing runs locally in your browser.

What it does

Output

Processing

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How to use

Paste a string, text, legacy API payload, or test value into the input field.
Choose result format: Hex or Base64.
Get the SHA-1 hash and compare with expected value if needed.
Copy the result for legacy API, tests, logs, checksums, or compatibility with old software.

More about this tool

SHA-1 Hash computes SHA-1 from text or strings. Useful for legacy API, old integrations, test data, logs, and compatibility where SHA-1 is still required.

Result can be output in Hex or Base64 and compared with expected SHA-1. SHA-1 is deprecated and not recommended for new security scenarios, passwords, tokens, or digital signatures. Prefer SHA-256 for new projects.

Processing runs locally in your browser.

Computes SHA-1 from text
Supports Hex and Base64
Can compare with expected SHA-1
Suitable for legacy API and compatibility
Shows input size and result format
Runs in the browser
Data is not sent to the server
No registration required

Frequently Asked Questions

What is SHA-1?

SHA-1 is a deprecated cryptographic hash function that maps input to a fixed-length hash. SHA-256 is usually preferred for new tasks.

Can SHA-1 be used for new projects?

SHA-1 is not recommended for new security scenarios. It may be needed only for compatibility with old APIs, legacy systems, and test examples.

Can SHA-1 be used for passwords?

No. SHA-1 must not be used for password storage. Use dedicated algorithms with salt and cost settings such as Argon2, bcrypt, or scrypt.

How is SHA-1 different from SHA-256?

SHA-256 is newer and more attack-resistant. SHA-1 remains mainly for compatibility with systems that already require it.

Can I verify whether SHA-1 matches?

Yes. Enable comparison with expected SHA-1, paste the reference value, and the tool shows whether it matches.

Can SHA-1 be decrypted back?

No. SHA-1 is a hash function, not encryption. The original text cannot be recovered from the hash.

How is SHA-1 different from HMAC-SHA1?

SHA-1 computes a plain hash of data. HMAC-SHA1 uses a secret key and appears in some older signing schemes.

Can I hash a file?

This service is for text. For files, use a dedicated file checksum tool that hashes files locally in the browser.

Is my data sent to the server?

No. Processing runs locally in your browser and data is not sent to the server.

Do I need to register?

No. The tool works without registration.

More about this tool

SHA-1 Hash computes SHA-1 from text or strings. Useful for legacy API, old integrations, test data, logs, and compatibility where SHA-1 is still required.

Processing runs locally in your browser.

Computes SHA-1 from text
Supports Hex and Base64
Can compare with expected SHA-1
Suitable for legacy API and compatibility
Shows input size and result format
Runs in the browser
Data is not sent to the server
No registration required

Frequently Asked Questions

What is SHA-1?

SHA-1 is a deprecated cryptographic hash function that maps input to a fixed-length hash. SHA-256 is usually preferred for new tasks.

Can SHA-1 be used for new projects?

SHA-1 is not recommended for new security scenarios. It may be needed only for compatibility with old APIs, legacy systems, and test examples.

Can SHA-1 be used for passwords?

No. SHA-1 must not be used for password storage. Use dedicated algorithms with salt and cost settings such as Argon2, bcrypt, or scrypt.

How is SHA-1 different from SHA-256?

SHA-256 is newer and more attack-resistant. SHA-1 remains mainly for compatibility with systems that already require it.

Can I verify whether SHA-1 matches?

Yes. Enable comparison with expected SHA-1, paste the reference value, and the tool shows whether it matches.

Can SHA-1 be decrypted back?

No. SHA-1 is a hash function, not encryption. The original text cannot be recovered from the hash.

How is SHA-1 different from HMAC-SHA1?

SHA-1 computes a plain hash of data. HMAC-SHA1 uses a secret key and appears in some older signing schemes.

Can I hash a file?

This service is for text. For files, use a dedicated file checksum tool that hashes files locally in the browser.

Is my data sent to the server?

No. Processing runs locally in your browser and data is not sent to the server.

Do I need to register?

No. The tool works without registration.