Security & Authentication
JWK ↔ PEM Converter
Convert RSA and EC public keys locally between JWK and SPKI PEM.
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Output
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Your result will appear here
Add an input and run the tool to get started.How to use JWK ↔ PEM Converter
Paste your input or load the example, choose the relevant options, then select Run tool. Errors appear below the editors. Copy or download the result when ready.
Public keys only. Private-key fields and PRIVATE KEY PEM blocks are rejected. Select the algorithm matching the key curve.
Keyboard shortcuts: Ctrl/⌘ + Enter to run, Ctrl/⌘ + K to find another tool.