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100% client-side — your file never leaves your device. All checksums are computed in your browser using the Web Crypto API and a pure-JS MD5 implementation.
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Drop any file or browse
Calculate MD5, SHA-1, SHA-256, SHA-384 & SHA-512
Computing…
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Computing checksums…
This may take a moment for large files
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Verify a hash
🧮 Algorithms
Select algorithms to compute
Display
Uppercase hex output
ℹ️ Info
What is a checksum?
A checksum (or hash) is a fixed-length string derived from a file's contents. Even a single-byte change produces a completely different hash, making it ideal for detecting corruption or tampering.
Which algorithm should I use?
MD5 · 128-bit
Fast, widely used for basic integrity checks. Not cryptographically secure.
SHA-1 · 160-bit
Legacy standard. Still common in software distribution. Deprecated for security.
SHA-256 · 256-bit
Current standard. Recommended for all general-purpose integrity verification.
SHA-512 · 512-bit
Maximum security. Preferred for high-value or cryptographic applications.