{"id":2105,"date":"2025-04-16T09:33:40","date_gmt":"2025-04-16T09:33:40","guid":{"rendered":"https:\/\/cheapsslsecurity.com\/p\/?p=2105"},"modified":"2025-04-16T10:52:12","modified_gmt":"2025-04-16T10:52:12","slug":"from-crt-to-pem-a-simple-guide-to-ssl-file-conversions","status":"publish","type":"post","link":"https:\/\/cheapsslsecurity.com\/p\/from-crt-to-pem-a-simple-guide-to-ssl-file-conversions\/","title":{"rendered":"From CRT to PEM: A Simple Guide to SSL File Conversions"},"content":{"rendered":"<h2>Creating a PEM file is necessary to install TLS\/SSL certificates correctly in some environments.<\/h2>\n<p>A PEM file is a text file containing one or more certificates and, optionally, a private key. (While a CRT file only contains a single certificate.) Below are different ways to create a PEM file, depending on your installation needs.<\/p>\n<p><!--more--><\/p>\n<h3>1. Create a PEM file with the complete TLS\/SSL certificate trust chain<\/h3>\n<ol>\n<li><strong>Download the required certificates:<\/strong> get the primary certificates (e.g., your_domain_name.crt), intermediate certificates (intermediate-cert.crt), and root certificates (root-cert.crt).<br \/>\n<img decoding=\"async\" data-src=\"https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/crt-to-pem-01.png\" alt=\"Convert CERT to PEM\" width=\"975\" height=\"621\" class=\"alignnone size-full wp-image-2106 lazyload\" data-srcset=\"https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/crt-to-pem-01.png 975w, https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/crt-to-pem-01-300x191.png 300w, https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/crt-to-pem-01-768x489.png 768w, https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/crt-to-pem-01-471x300.png 471w\" data-sizes=\"(max-width: 975px) 100vw, 975px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 975px; --smush-placeholder-aspect-ratio: 975\/621;\" \/><\/li>\n<li><strong>Combine the certificates into one file:<\/strong> Open a text editor and paste the contents of each certificate in the following order:\n<ul>\n<li><strong>Primary certificate<\/strong> &#8211; your_domain_name.crt<\/li>\n<li><strong>Intermediate certificate<\/strong> &#8211; intermediate-cert.crt<\/li>\n<li><strong>Root certificate<\/strong> &#8211; root-cert.crt<\/li>\n<\/ul>\n<p><img decoding=\"async\" data-src=\"https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/crt-to-pem-02.png\" alt=\"Convert CRT to PEM certificate\" width=\"975\" height=\"599\" class=\"alignnone size-full wp-image-2108 lazyload\" data-srcset=\"https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/crt-to-pem-02.png 975w, https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/crt-to-pem-02-300x184.png 300w, https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/crt-to-pem-02-768x472.png 768w, https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/crt-to-pem-02-488x300.png 488w\" data-sizes=\"(max-width: 975px) 100vw, 975px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 975px; --smush-placeholder-aspect-ratio: 975\/599;\" \/><br \/>\nMake sure to include the &#8212;&#8211;BEGIN CERTIFICATE&#8212;&#8211; and &#8212;&#8211;END CERTIFICATE&#8212;&#8211; lines for each certificate.<\/p>\n<p> The file should look like this:<\/p>\n<div class=\"code-with-bg\">\n<div>\n&#8212;&#8211;BEGIN CERTIFICATE&#8212;&#8211;<br \/>\n(contents of your primary certificate)<br \/>\n&#8212;&#8211;END CERTIFICATE&#8212;&#8211;<br \/>\n&#8212;-BEGIN CERTIFICATE&#8212;&#8211;<br \/>\n(contents of your intermediate certificate)<br \/>\n&#8212;&#8211;END CERTIFICATE&#8212;&#8211;<br \/>\n&#8212;-BEGIN CERTIFICATE&#8212;&#8211;<br \/>\n(contents of your root certificate)<br \/>\n&#8212;&#8211;END CERTIFICATE&#8212;&#8211;\n<\/div>\n<\/div>\n<\/li>\n<li><strong>Save the file:<\/strong> Save the combined file with a .pem extension, for example, your_domain_name.pem.<br \/>\n<img decoding=\"async\" data-src=\"https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/crt-to-pem-03.png\" alt=\"Save CRT certificate\" width=\"975\" height=\"557\" class=\"alignnone size-full wp-image-2111 lazyload\" data-srcset=\"https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/crt-to-pem-03.png 975w, https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/crt-to-pem-03-300x171.png 300w, https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/crt-to-pem-03-768x439.png 768w, https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/crt-to-pem-03-500x286.png 500w\" data-sizes=\"(max-width: 975px) 100vw, 975px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 975px; --smush-placeholder-aspect-ratio: 975\/557;\" \/><\/li>\n<\/ol>\n<h3>2. Creating a PEM file with primary and intermediate certificates.<\/h3>\n<ol>\n<li><strong>Download the required certificates:<\/strong> get the primary certificate (your_domain_name.crt) and the intermediate certificate (intermediate-cert.crt).<br \/>\n<img decoding=\"async\" data-src=\"https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/download-crt-01.png\" alt=\"Download SSL certificate\" width=\"975\" height=\"621\" class=\"alignnone size-full wp-image-2112 lazyload\" data-srcset=\"https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/download-crt-01.png 975w, https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/download-crt-01-300x191.png 300w, https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/download-crt-01-768x489.png 768w, https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/download-crt-01-471x300.png 471w\" data-sizes=\"(max-width: 975px) 100vw, 975px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 975px; --smush-placeholder-aspect-ratio: 975\/621;\" \/><\/li>\n<li><strong>Combine the certificates: <\/strong>In a text editor, paste the contents of the certificates in the following order:\n<ul>\n<li><strong>Primary certificate<\/strong> \u2014 your_domain_name.crt<\/li>\n<li><strong>Intermediate certificate<\/strong> \u2014 intermediate-cert.crt<\/li>\n<\/ul>\n<p><img decoding=\"async\" data-src=\"https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/download-crt-02.png\" alt=\"Combine certificate files\" width=\"975\" height=\"597\" class=\"alignnone size-full wp-image-2113 lazyload\" data-srcset=\"https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/download-crt-02.png 975w, https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/download-crt-02-300x184.png 300w, https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/download-crt-02-768x470.png 768w, https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/download-crt-02-490x300.png 490w\" data-sizes=\"(max-width: 975px) 100vw, 975px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 975px; --smush-placeholder-aspect-ratio: 975\/597;\" \/>The file should look like this:<\/p>\n<div class=\"code-with-bg\">\n<div>\n&#8212;&#8211;BEGIN CERTIFICATE&#8212;&#8211;<br \/>\n(contents of your primary certificate)<br \/>\n&#8212;&#8211;END CERTIFICATE&#8212;&#8211;<br \/>\n&#8212;&#8211;BEGIN CERTIFICATE&#8212;&#8211;<br \/>\n(contents of your intermediate certificate)<br \/>\n&#8212;&#8211;END CERTIFICATE&#8212;&#8211;\n<\/div>\n<\/div>\n<\/li>\n<li><strong>Save the file: <\/strong>Save the combined file with a .pem extension, for example, your_domain_name.pem.<br \/>\n<img decoding=\"async\" data-src=\"https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/download-crt-03-1.png\" alt=\"\" width=\"975\" height=\"557\" class=\"alignnone size-full wp-image-2115 lazyload\" data-srcset=\"https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/download-crt-03-1.png 975w, https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/download-crt-03-1-300x171.png 300w, https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/download-crt-03-1-768x439.png 768w, https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/download-crt-03-1-500x286.png 500w\" data-sizes=\"(max-width: 975px) 100vw, 975px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 975px; --smush-placeholder-aspect-ratio: 975\/557;\" \/><\/li>\n<\/ol>\n<h3>Generate a PEM file with a private key and complete chain of trust.<\/h3>\n<ol>\n<li><strong>Download the required files:<\/strong> Get the private key (your_domain_name.key), primary certificate (your_domain_name.crt), intermediate certificate (intermediate-cert.crt), and root certificate (root-cert.crt).\n<div class=\"p-note\">\nNOTE: The Private Key is generated on the Hosting Web Server, Hosting management software, or using the online Certificate Signing Request (CSR) Generator on your own together with CSR as a pair, and should be saved by you manually. No one can have access to your Private Key. Therefore, it is never sent via e-mail and is unavailable for download. The compromised Private Key leads to immediate certificate revocation. In case of Private Key loss, it is necessary to generate a new RSA key pair (CSR + Private Key) and reissue the certificate using new keys.<\/div>\n<p><img decoding=\"async\" data-src=\"https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/download-crt-04-1.png\" alt=\"Generate certificate in Client area\" width=\"975\" height=\"621\" class=\"alignnone size-full wp-image-2119 lazyload\" data-srcset=\"https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/download-crt-04-1.png 975w, https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/download-crt-04-1-300x191.png 300w, https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/download-crt-04-1-768x489.png 768w, https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/download-crt-04-1-471x300.png 471w\" data-sizes=\"(max-width: 975px) 100vw, 975px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 975px; --smush-placeholder-aspect-ratio: 975\/621;\" \/>\n<\/li>\n<li><strong>Combine the files:<\/strong> In a text editor, paste the contents of each file in the following order:\n<ul>\n<li><strong>Private Key<\/strong> \u2014 your_domain_name.key<\/li>\n<li><strong>Primary Certificate<\/strong> \u2014 your_domain_name.crt<\/li>\n<li><strong>Intermediate Certificate<\/strong> \u2014 intermediate-cert.crt<\/li>\n<li><strong>Root Certificate<\/strong> \u2014 root-cert.crt<\/li>\n<\/ul>\n<p><img decoding=\"async\" data-src=\"https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/download-crt-05.png\" alt=\"Convert certificate from PEM\" width=\"975\" height=\"507\" class=\"alignnone size-full wp-image-2121 lazyload\" data-srcset=\"https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/download-crt-05.png 975w, https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/download-crt-05-300x156.png 300w, https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/download-crt-05-768x399.png 768w, https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/download-crt-05-500x260.png 500w\" data-sizes=\"(max-width: 975px) 100vw, 975px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 975px; --smush-placeholder-aspect-ratio: 975\/507;\" \/><br \/>\nThe file should look like this:<\/p>\n<div class=\"code-with-bg\">\n<div>\n&#8212;&#8211;BEGIN RSA PRIVATE KEY&#8212;&#8211;<br \/>\n(contents of your private key)<br \/>\n&#8212;&#8211;END RSA PRIVATE KEY&#8212;&#8211;<br \/>\n&#8212;-BEGIN CERTIFICATE&#8212;&#8211;<br \/>\n(contents of your primary certificate)<br \/>\n&#8212;&#8211;END CERTIFICATE&#8212;&#8211;<br \/>\n&#8212;-BEGIN CERTIFICATE&#8212;&#8211;<br \/>\n(contents of your intermediate certificate)<br \/>\n&#8212;&#8211;END CERTIFICATE&#8212;&#8211;<br \/>\n&#8212;-BEGIN CERTIFICATE&#8212;&#8211;<br \/>\n(contents of your root certificate)<br \/>\n&#8212;&#8211;END CERTIFICATE&#8212;&#8211;\n<\/div>\n<\/div>\n<\/li>\n<li><strong>Save the file:<\/strong> Save the combined file with a .pem extension, for example, your_domain_name.pem.<br \/>\n<img decoding=\"async\" data-src=\"https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/download-crt-06.png\" alt=\"Save converted file\" width=\"975\" height=\"558\" class=\"alignnone size-full wp-image-2122 lazyload\" data-srcset=\"https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/download-crt-06.png 975w, https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/download-crt-06-300x172.png 300w, https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/download-crt-06-768x440.png 768w, https:\/\/cheapsslsecurity.com\/p\/wp-content\/uploads\/2025\/04\/download-crt-06-500x286.png 500w\" data-sizes=\"(max-width: 975px) 100vw, 975px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 975px; --smush-placeholder-aspect-ratio: 975\/558;\" \/><br \/>\nBy following these instructions, you can convert a CRT file to a PEM file that meets the requirements of your TLS\/SSL certificate installation.\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>Creating a PEM file is necessary to install TLS\/SSL certificates correctly in some environments. A PEM file is a text file containing one or more certificates and, optionally, a private key. (While a CRT file only contains a single certificate.) &hellip; <a href=\"https:\/\/cheapsslsecurity.com\/p\/from-crt-to-pem-a-simple-guide-to-ssl-file-conversions\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21,14],"tags":[],"class_list":["post-2105","post","type-post","status-publish","format-standard","hentry","category-ssl-advanced","category-ssl-error-codes"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>From CRT to PEM: A Simple Guide to SSL File Conversions - Cheap SSL Security<\/title>\n<meta name=\"description\" content=\"A PEM file is an essential text file that can house one or more certificates, along with an optional private key. 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