Browse Tools Top 100
CSR CRT
Not possible

Convert CSR to CRT

Can you convert CSR to CRT?
QUICK ANSWER
Is it possible to convert CSR to CRT?
No - not a direct conversion.

A CSR is not 'converted' into a certificate - it is submitted to a Certificate Authority, which validates it and ISSUES a separate .crt/.cer signed by the CA. You cannot make a trusted certificate from a CSR yourself (that would be unsigned/untrusted). Submit the CSR to a CA (or run your own CA with OpenSSL for internal use).

No direct path
Also to CRT: PFX · P12 · PEM

On this page

Tested on macOS, Windows & Linux
Last verified Oct 2026

More free converters

HEIC, PNG, WEBP, MP3 and more - every tool here is free.

Open the toolbox

Converting CSR to CRT

A .CSR file and a .CRT file hold different kinds of data, so there is no direct way to turn one into the other.

A full step-by-step guide for this conversion is on the way; the information above is drawn straight from our database.

About these formats

.CSR Certificate Signing Request (PKCS#10)

A CSR file is a Certificate Signing Request -- a block of Base64 text generated on your server and submitted to a Certificate Authority to apply for an SSL/TLS certificate. Inspect it with…

Open .CSR details →
.CRT Security certificate (X.509 .crt)

A CRT file is an X.509 digital certificate that ties an identity (a website, server, or publisher) to a public key, signed by a Certificate Authority. On Windows, double-click it to view…

Open .CRT details →