Certificate Fingerprint Calculator (SHA-256 / SHA-1)
Compute the SHA-256, SHA-1 and SHA-384 fingerprints of any PEM certificate plus its SPKI pin (pin-sha256 for HPKP / certificate pinning) — all in the browser via WebCrypto.
About Certificate Fingerprint Calculator (SHA-256 / SHA-1)
Compute the SHA-256, SHA-1 and SHA-384 fingerprints of any PEM certificate plus its SPKI pin (pin-sha256 for HPKP / certificate pinning) — all in the browser via WebCrypto. Certificate Fingerprint Calculator (SHA-256 / SHA-1) runs entirely in your browser — your input never leaves your device and there is nothing to install. Just paste your text and copy the result the moment it appears.
How to use Certificate Fingerprint Calculator (SHA-256 / SHA-1)
- 1Paste or type your input into the box above — a sample is pre-filled so you can try it instantly.
- 2Set any options on offer (mode, key, format) to match what you need.
- 3The result appears the moment you type — no button to press, no waiting.
- 4Click Copy to grab the output — Certificate Fingerprint Calculator (SHA-256 / SHA-1) keeps everything on your device.
Why use Certificate Fingerprint Calculator (SHA-256 / SHA-1)?
- ✓Handles edge cases and formatting correctly so you get the right answer the first time
- ✓Processes everything locally in the browser — fast and responsive even on large inputs
- ✓100% free with no sign-up, no watermark and no usage limits
- ✓Runs entirely in your browser — your text and keys are never uploaded, stored or logged
- ✓Works offline once loaded, with instant results and one-click copy
Frequently asked questions
What does Certificate Fingerprint Calculator (SHA-256 / SHA-1) do?+
Compute the SHA-256, SHA-1 and SHA-384 fingerprints of any PEM certificate plus its SPKI pin (pin-sha256 for HPKP / certificate pinning) — all in the browser via WebCrypto. It all happens client-side in your browser, which keeps it fast and completely private.
Do I need to install anything or sign up?+
No — Certificate Fingerprint Calculator (SHA-256 / SHA-1) works instantly in any modern browser with no account, no download and no usage limits.
Is it free to use?+
Yes — completely free with no sign-up, no account and no usage limits. There is no paywall, so you can encode, decode and convert as much as you like.
Is my data private and secure?+
Yes. This tool runs entirely in your browser using client-side JavaScript — your input is never uploaded to a server, stored or logged. Once the page has loaded you can use it offline, which makes it safe for tokens, keys and confidential data.
Related Security tools
SSL Certificate Decoder (PEM)
Paste a PEM X.509 certificate to decode every field in your browser — subject, issuer, SANs, validity with days-left, key type and size, key usage, fingerprints and Certificate Transparency SCTs. Nothing is uploaded.
● LiveCSR Decoder (Certificate Signing Request)
Decode a PKCS#10 certificate signing request in your browser: subject DN, requested SANs, public key type and size, signature algorithm and attributes — verify a CSR before you send it to a CA.
● LiveASN.1 / DER Parser (X.509 Viewer)
Parse any DER or PEM structure — certificates, CSRs, keys, PKCS#7 — into an indented ASN.1 tree with tag names, decoded OIDs, strings, integers and byte offsets. Works from PEM, Base64 or hex.
● Live