{"id":18550,"date":"2025-07-21T07:23:14","date_gmt":"2025-07-21T07:23:14","guid":{"rendered":"https:\/\/www.sysinfotools.com\/blog\/?p=18550"},"modified":"2025-07-21T07:23:15","modified_gmt":"2025-07-21T07:23:15","slug":"convert-ost-to-csv-with-contacts","status":"publish","type":"post","link":"https:\/\/www.sysinfotools.com\/blog\/convert-ost-to-csv-with-contacts\/","title":{"rendered":"How to Convert OST to CSV with Contacts &#8211; Easy Steps"},"content":{"rendered":"<div class=\"block_sum\">\n  <p><strong>Summary:<\/strong> When you need Outlook OST contacts and address information on your local system, conversion to CSV is the best option. Comma-Separated Value format is lightweight and stores data in a tabular format. Additionally, CSVs can be imported into Google Contacts, Excel, or other CRM tools for analysis. Yet, OST files aren&rsquo;t meant for direct open or export, especially if the original Outlook profile doesn&rsquo;t exist or is orphaned. Hence, convert OST to CSV is explained here with free solutions and an <a href=\"https:\/\/www.sysinfotools.com\/ost-to-pst-converter.php\"><strong>OST to PST Converter Tool<\/strong><\/a> for efficiency.<\/p>\n<div class=\"blog-btn\">\n<ul id=\"db-btn-container\" class=\"nav nav-tabs mt-4\" role=\"tablist\">\n<li class=\"nav-item\"><a id=\"windows-tab\" class=\"nav-link active\" role=\"tab\" href=\"#windows\" data-toggle=\"tab\" aria-controls=\"windows\" aria-selected=\"true\"><i class=\"icon-windows\"><\/i> Windows<\/a><\/li>\n<li class=\"nav-item\"><a id=\"mac-tab\" class=\"nav-link\" role=\"tab\" href=\"#mac\" data-toggle=\"tab\" aria-controls=\"mac\" aria-selected=\"false\"><i class=\"icon-apple\"><\/i> Mac<\/a><\/li>\n<\/ul>\n<div id=\"db-btn-containerContent\" class=\"tab-content my-2\">\n<div id=\"windows\" class=\"tab-pane fade active show\" role=\"tabpanel\" aria-labelledby=\"windows-tab\"><a class=\"sum-d-btn\" href=\"https:\/\/www.sysinfotools.com\/demo-version\/SysInfoTools-OST-to-PST-Converter-Demo.exe\"><i class=\"icon-windows\"><\/i> Download<\/a> <a class=\"sum-b-btn\" href=\"https:\/\/www.sysinfotools.com\/buynow\/ost-to-pst-converter.php\" target=\"_blank\" rel=\"noopener\"><i class=\"icon icon-basket\"><\/i> Buy Now<\/a><\/div>\n<div id=\"mac\" class=\"tab-pane fade\" role=\"tabpanel\" aria-labelledby=\"mac-tab\"><a class=\"sum-d-btn\" href=\"https:\/\/www.sysinfotools.com\/demo-version\/Sysinfo-Mac-OST-to-PST-for-Mac.dmg\"><i class=\"icon-apple\"><\/i> Download<\/a> <a class=\"sum-b-btn\" href=\"https:\/\/www.sysinfotools.com\/mac\/ost-to-pst-converter\/buy.php\" target=\"_blank\" rel=\"noopener\"><i class=\"icon icon-basket\"><\/i> Buy Now<\/a><\/div>\n<\/div><\/div><\/div>\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_81 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<div class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/div>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.sysinfotools.com\/blog\/convert-ost-to-csv-with-contacts\/#Common_Needs_to_Extract_Contacts_from_OST_to_CSV\" >Common Needs to Extract Contacts from OST to CSV<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.sysinfotools.com\/blog\/convert-ost-to-csv-with-contacts\/#Strategies_Convert_OST_to_CSV_with_Contacts\" >Strategies Convert OST to CSV with Contacts<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.sysinfotools.com\/blog\/convert-ost-to-csv-with-contacts\/#Manual_Method_to_Move_Outlook_OST_to_CSV_Excel\" >Manual Method to Move Outlook OST to CSV Excel<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.sysinfotools.com\/blog\/convert-ost-to-csv-with-contacts\/#Dedicated_Software_to_Export_OST_Files_into_CSV\" >Dedicated Software to Export OST Files into CSV<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.sysinfotools.com\/blog\/convert-ost-to-csv-with-contacts\/#Conclusion\" >Conclusion<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Common_Needs_to_Extract_Contacts_from_OST_to_CSV\"><\/span>Common Needs to Extract Contacts from OST to CSV<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Offline Storage Table files are generated when MS Outlook syncs with Exchange, IMAP, and Office 365. But after the disconnection, the OST files are orphaned and inaccessible. Thus, to <a href=\"https:\/\/www.sysinfotools.com\/blog\/open-ost-file-on-another-computer\/\"><strong>open OST file on another computer<\/strong><\/a> and more, users convert them to CSV. The other scenarios are:<\/p>\n<ul>\n<li>Exporting Outlook contacts for CRM or use in business.<\/li>\n<li>Extracting mobile, phone number, and address information for audits.<\/li>\n<li>Migrating contacts from Outlook to another platform like Gmail, Yahoo, etc.<\/li>\n<li>Accessing OST file contacts and email data without MS Outlook.<\/li>\n<\/ul>\n<p><strong>Pro Tips for Accurate OST to CSV Conversions<\/strong><\/p>\n<ul>\n<li>Always check and preview the data before exporting to match the fields correctly.<\/li>\n<li>Filter your data in case you need specific contacts or files from a specific time.<\/li>\n<li>Avoid free online OST to CSV Converter Tools as they rarely support the export of contacts, too.<\/li>\n<li>Backup your OST files before performing the migration to ensure your data is safe.<\/li>\n<\/ul>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Strategies_Convert_OST_to_CSV_with_Contacts\"><\/span>Strategies Convert OST to CSV with Contacts<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>In this section, we have mentioned one top free solutions preferred by several users. Another one is an expert-recommended software that makes the process smooth and efficient. You can explore both methods and find out which one best fits your needs. Let&rsquo;s begin with the relevant solutions right away.<\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Manual_Method_to_Move_Outlook_OST_to_CSV_Excel\"><\/span>Manual Method to Move Outlook OST to CSV Excel<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>To process the conversion, follow the steps one by one, and then you will get the successful results with ease. These are:<\/p>\n<ol>\n<li>Start your active <strong>MS Outlook<\/strong> profile (one that originally contains OST).<\/li>\n<li>Then, hover your mouse over <strong>File<\/strong>, click it, and open the menu.<\/li>\n<li>Next, you will get the <strong>Open and Export<\/strong> option in the list. Press it.<\/li>\n<li>Further, start the <strong>Import\/Export<\/strong> wizard from the same. Tap <strong>Export to File<\/strong>.<\/li>\n<li>Click <strong>Next<\/strong> and continue to opt for the <strong>Comma Separated Values (CSV)<\/strong>.<\/li>\n<li>Afterward, click <strong>Next <\/strong>and pick <strong>Contacts<\/strong> and other items (emails) to move.<\/li>\n<li>With <strong>Next<\/strong>, move forward and choose your destination by the <strong>Browse <\/strong>button.<\/li>\n<li>At last, click <strong>Finish<\/strong> and complete to finalize the convert OST to CSV.<\/li>\n<\/ol>\n<p><strong>Shortcomings of the Manual Method<\/strong><\/p>\n<ul>\n<li>The method doesn&rsquo;t work if your OST file is from a deleted or inaccessible Outlook profile.<\/li>\n<li>It also doesn&rsquo;t help if the OST file is corrupted or Outlook doesn&rsquo;t load.<\/li>\n<li>Also, this method is time-consuming and not ideal for bulk exports of OST files.<\/li>\n<li>Moreover, there is no guarantee that the folder structure or metadata, and attachments remain intact.<\/li>\n<\/ul>\n<p>To overcome all of them, we have a better alternative as a professional tool, explained as follows.<\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Dedicated_Software_to_Export_OST_Files_into_CSV\"><\/span>Dedicated Software to Export OST Files into CSV<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>If you are dealing with OST files from old systems or deactivated Outlook profiles. Or, you need to bulk export OST contacts, emails, calendars, etc., to CSV or other formats. Then the <strong>SysInfo OST to PST Converter Tool<\/strong> is the all-in-one solution with reliable features and filters. It supports large files with attachments for batch export without compromising the structure or data integrity.<\/p>\n<p><strong>Best suited for:<\/strong> IT admins, compliance teams, and businesses extracting large contact databases from legacy Outlook systems or archives.<\/p>\n<p><strong>Quick Working to Convert OST to CSV Effortlessly<\/strong><\/p>\n<ol>\n<li>Launch the <strong>OST File to CSV Converter <\/strong>and, with a radio option, click <strong>Next<\/strong>.<\/li>\n<li>Then, choose your <strong>OST<\/strong> files from your PC by the<strong> Select <\/strong>button and press <strong>Open<\/strong> to add.<\/li>\n<li>Click <strong>Next<\/strong> once all the files are added, and preview them from the tree structure.<\/li>\n<li>Further, select the respective folders (Contacts, Mails, etc.) to export and click <strong>Next<\/strong>.<\/li>\n<li>After that, choose <strong>CSV<\/strong> from the list, pick the filters, and specify your desired <strong>Path to Save<\/strong>.<\/li>\n<li>Finally, press the <strong>Convert<\/strong> button to extract contacts from OST to CSV successfully.<\/li>\n<\/ol>\n<p>To better understand how this tool is beneficial for you, look at this<strong> real-world scenario:<\/strong><\/p>\n<div class=\"p-4 mb-4\" style=\"border: 2px solid #005EFF; border-radius: 30px;\">\n<p><em>&ldquo;A healthcare consultancy needed access to old OST archives from a deactivated Outlook 2016 profile. They wanted to migrate 4500+ contacts into a CRM that supported only CSV file uploads. Since Outlook wasn&rsquo;t connected to MS Exchange Server anymore, the manual export was impossible.&rdquo;<\/em><\/p>\n<br \/>\n<p>Using an automated OST Converter, they were able to:<\/p>\n<ul>\n<li>Swiftly export only the Contacts folder<\/li>\n<li>Save contact data into a clean Excel CSV sheet<\/li>\n<li>Avoid reinstallation of MS Outlook or Exchange Server<\/li>\n<\/ul>\n<br \/>\n<p><strong>Result?<\/strong> They saved over <strong>85%<\/strong> migration time with zero data loss and full accuracy.<\/div>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Whether you are working with data migration, archives, or CRM onboarding. The ability to convert OST to CSV provides you with flexibility, portability, and control. While Outlook&rsquo;s built-in export works for some cases and a few migrations, it is not suited for large datasets. Instead, the professional tool works fine for such cases, ensuring speed, accuracy, and access to Outlook files from any version on any OS.<\/p>\n<p>Processing 100s or 1000s of OST to CSV? Use our demo tool for a few free conversions and to explore the software. Or, consult our data export team for personalized conversions.<\/p>\n<h4 class=\"faq_heading\">Frequently Asked Questions<\/h4>\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1753079766656\"><strong class=\"schema-faq-question\">Q. Can I move Outlook OST to CSV Excel without Outlook?<\/strong> <p class=\"schema-faq-answer\"><strong>Ans-<\/strong> Yes, of course, you can. The OST to CSV File Converter Tool here has the ability to change OST files without Outlook installation. It is highly secure, easy to use, and makes the process quick and efficient.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1753079783880\"><strong class=\"schema-faq-question\">Q.\u00a0 Will the converted CSV preserve all the OST contact fields?<\/strong> <p class=\"schema-faq-answer\"><strong>Ans-<\/strong> Use the OST File Converter to export OST files into CSV, and then indeed your contact fields are preserved in the original order. But with the manual conversions, you cannot be assured of it.<\/p> <\/div> <\/div>\n\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-left kksr-valign-bottom\"\n    data-payload='{&quot;align&quot;:&quot;left&quot;,&quot;id&quot;:&quot;18550&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;bottom&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;0&quot;,&quot;legendonly&quot;:&quot;&quot;,&quot;readonly&quot;:&quot;&quot;,&quot;score&quot;:&quot;0&quot;,&quot;starsonly&quot;:&quot;&quot;,&quot;best&quot;:&quot;5&quot;,&quot;gap&quot;:&quot;5&quot;,&quot;greet&quot;:&quot;Rate this post&quot;,&quot;legend&quot;:&quot;0\\\/5 - (0 votes)&quot;,&quot;size&quot;:&quot;24&quot;,&quot;title&quot;:&quot;How to Convert OST to CSV with Contacts - Easy Steps&quot;,&quot;width&quot;:&quot;0&quot;,&quot;_legend&quot;:&quot;{score}\\\/{best} - ({count} {votes})&quot;,&quot;font_factor&quot;:&quot;1.25&quot;}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n    \n<div class=\"kksr-stars-active\" style=\"width: 0px;\">\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 19.2px;\">\n            <span class=\"kksr-muted\">Rate this post<\/span>\n    <\/div>\n    <\/div>\n","protected":false},"excerpt":{"rendered":"<p>Summary: When you need Outlook OST contacts and address information on your local system, conversion to CSV is the best<a class=\"read-more ml-1 main-read-more\" href=\"https:\/\/www.sysinfotools.com\/blog\/convert-ost-to-csv-with-contacts\/\">Read More<\/a><\/p>\n","protected":false},"author":15,"featured_media":18556,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1752],"tags":[],"class_list":["post-18550","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-file-management"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to Convert OST to CSV with Contacts - Easy Steps<\/title>\n<meta name=\"description\" content=\"To convert OST to CSV in bulk, you can use the dedicated OST to CSV Converter. It allows users to easily convert OST files with contacts.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.sysinfotools.com\/blog\/convert-ost-to-csv-with-contacts\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Convert OST to CSV with Contacts - Easy Steps\" \/>\n<meta property=\"og:description\" content=\"To convert OST to CSV in bulk, you can use the dedicated OST to CSV Converter. 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