Should I choose SHA-1 or SHA-256?

New systems should always use SHA-256 or stronger; SHA-1 has been practically broken (the SHAttered attack) and is only for legacy compatibility.

What is the difference in digest length?

SHA-1 outputs 40 hex characters (160 bits), SHA-256 outputs 64, and SHA-512 outputs 128 — longer means stronger collision resistance.

This page is text-oriented. You can paste a file's content, but for large files use system commands such as certutil or shasum instead.

SHA Hash Generator

Free online SHA hash tool: compute SHA-1, SHA-256 and SHA-512 hex digests at once to verify downloads — runs locally.

Privacy: all processing happens locally in your browser. Your input never leaves your device.

What is SHA Hash Generator?

The SHA family is today's mainstream of cryptographic hashing: SHA-1 is being phased out, SHA-256 underpins Bitcoin and TLS, and SHA-512 offers an even longer digest. This tool outputs SHA-1, SHA-256 and SHA-512 hex digests from a single input, making it easy to compare against the official checksum of a downloaded file. All computation is done locally.

How to Use

Enter text
See the SHA-1, SHA-256 and SHA-512 results at once
Click any result to copy it

FAQ

Should I choose SHA-1 or SHA-256?: New systems should always use SHA-256 or stronger; SHA-1 has been practically broken (the SHAttered attack) and is only for legacy compatibility.
What is the difference in digest length?: SHA-1 outputs 40 hex characters (160 bits), SHA-256 outputs 64, and SHA-512 outputs 128 — longer means stronger collision resistance.
Can it hash files?: This page is text-oriented. You can paste a file's content, but for large files use system commands such as certutil or shasum instead.

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Last updated 2026-09-04