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Free OLM Converter
Convert to Any Format

Convert Mac Outlook OLM files to PST, EML, MBOX, CSV, HTML, JSON, or TXT.

7 output formatsMac Outlook supportEmail & contactsInstant conversion

Drop OLM file here

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Overview

What Is OLM to PST Conversion?

OLM to PST conversion takes an Outlook for Mac OLM file and produces output suitable for use with Outlook on Windows. OLM is the Mac archive format (ZIP-based); PST is the Windows Outlook format. This tool extracts emails from OLM and delivers them as a ZIP of EML files (PST-limited option), which you can import into Outlook or convert further to native PST with desktop tools if needed.

Our free OLM to PST converter processes on your device. You drop .olm file(s), and the tool extracts all emails and packages them for download. All processing happens on your device; nothing is uploaded.

Use cases include Mac to Windows migration, moving from Outlook for Mac to Outlook on Windows, and backing up OLM content in a format compatible with Windows tools. No Outlook for Mac is required — the tool works on any platform.

Features

Features

Why use our OLM to PST converter

PST-style output

Export OLM content as a ZIP of EML files (PST-limited option) for use with Outlook on Windows or import into other clients.

ZIP-based OLM parsing

OLM is a ZIP archive. The tool opens it on your device, extracts email data, and packages messages for PST-style download.

No upload

OLM is read and converted entirely on your device. Your Outlook for Mac data stays on your device.

Mac to Windows migration

Moving from Outlook for Mac to Outlook on Windows? Convert OLM to PST (ZIP of EML) and import into Windows Outlook.

Preview before convert

See email count and preview table before converting. Each message is included in the PST-style ZIP.

How it works

How to Convert OLM to PST

Four steps — no install, no Outlook for Mac, no sign-up

01
01

Open OLM to PST Converter

This page opens with PST already selected as the output format.

02
02

Drop your OLM file(s)

Drag and drop one or more .olm files. The tool extracts emails from the OLM ZIP structure.

03
03

Review the preview

Check the email count and preview table. All messages will be included in the PST-style download.

04
04

Convert & download

Click Convert & Download. You get a ZIP of EML files (PST-limited) for import into Outlook or other tools.

FAQ

Frequently Asked Questions

Common questions about OLM to PST conversion

Q1. What is OLM to PST conversion?
OLM is Outlook for Mac's archive format; PST is used by Outlook on Windows. Converting OLM to PST extracts emails and packages them (this tool provides a ZIP of EML files as a PST-limited option) for use on Windows or with Outlook.
Q2. Why convert OLM to PST?
To migrate from Outlook for Mac to Outlook on Windows. PST (or a ZIP of EMLs) lets you bring your Mac mail into Windows Outlook or another client that expects PST-style data.
Q3. Do I get a native .pst file?
Full native PST creation from OLM typically requires Outlook on Windows or a desktop tool. This online tool gives you a ZIP of EML files (PST-limited) that you can import into Outlook or use with other converters.
Q4. Do you upload my OLM file?
No. Conversion runs entirely on your device. Your OLM is read and parsed on your device. Nothing is sent to our servers.
Q5. Can I use this on Windows?
Yes. The OLM to PST converter works on any modern platform — Windows, Mac, or Linux. You do not need Outlook for Mac installed.
Q6. Can I convert multiple OLM files?
Yes. Add as many OLM files as you need. Each is parsed independently. You can merge all emails into one PST-style download or export per source.
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