Convert .crt and .key to .pem - Free Online | SSL Certificate Tool | JavaInUse

Convert .crt and .key to .pem - Free Online

Combine your certificate (.crt) and private key (.key) into a PEM bundle instantly. No software installation required - just paste and combine.




🔒 PEM Bundle Creator

About CRT and KEY to PEM Conversion

PEM (Privacy Enhanced Mail) bundle files can contain multiple components including certificates and private keys in a single file. This tool combines your certificate (.crt) and private key (.key) into a unified PEM bundle file.

Many servers and applications require certificates and private keys to be combined in a single PEM file. This tool ensures proper formatting with correct headers (-----BEGIN CERTIFICATE----- and -----BEGIN PRIVATE KEY-----) and combines them in the standard order.

Supported Key Types:

Common Use Cases:

Convert and package keys for SSH, TLS, and keystore workflows.

PPK -> PEM Convert PuTTY keys to PEM PEM -> PPK Create PuTTY-ready keys PEM -> OpenSSH Rewrap PEM keys to OpenSSH PEM -> DER Binary DER output from PEM PKCS#1 -> PKCS#8 Modernize RSA private keys PKCS#8 -> PKCS#1 Generate legacy key material JKS -> PEM Export PEM keys and certs from JKS PEM -> JKS Build Java keystores from PEM assets PFX/P12 -> PEM Extract keys and chains from PKCS#12 PEM -> CRT Convert PEM certificates to CRT format CRT -> PEM Convert CRT certificates to PEM format JKS -> PFX Convert Java Keystore to PKCS#12 PFX -> JKS Convert PKCS#12 to Java Keystore PEM -> JWK Convert PEM keys to JSON Web Key JWK -> PEM Convert JSON Web Key to PEM PKCS#8 -> JWK Convert PKCS#8 keys to JWK JWK -> PKCS#8 Convert JSON Web Key to PKCS#8

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