QDT File Extension

The QDT file extension was created by Intuit and is also known as the Quicken 3 & 4 Data File. QDT is classified as a Data Files and This File type categories under Zip, Text, Binary and XML, however, the format of this file format has not been determined yet. You can open QDT files in QEMU program.

Quicken 3 & 4 Data File Type

Quicken 3 & 4 Data File Type
Extension .qdt
Developer Intuit
Popularity 5.0 (10 Votes)
Mime Type mime-type/not.available
Default Program QEMU
Category Data Files
Format Binary
Updated 7/1/2025

What is a QDT File Type?

The QDB format was replaced by the .QDB format in Quicken 98, 99 and 2000, and the QDB format was replaced by the .QDF format.

Free Online QDT Tools & Apps

Access powerful and secure free online QDT tools to convert, view, edit, merge, split, and compare QDT files — all without installing any software. Our tools support the .QDT (Quicken 3 & 4 Data File) file extension and run smoothly in any modern browser.

Select a tool below to explore features and manage your QDT files directly from your device with ease.

QDT Files Common Issues

There are few common issues with the Quicken 3 & 4 Data File .QDT File Extensions while opening the .QDT files on Windows and MacOs, we have solution to those issues such as:

Can't Open QDT Files?

  1. You must have supported software programs installed for Quicken 3 & 4 Data File on your system such as QEMU.
  2. Associate default Qemu QEMU program for *.qdt (Quicken 3 & 4 Data File) files.

    Associate QDT Default Program on Windows
    1. Right-click a *.QDT (e.g example.qdt) file and click Open With.
    2. In the Open with dialog box, click Qemu QEMU program Or click Browse to locate the program (*.exe) that you want.
    3. Select check box for Always use this app to open .qdt files.

Related QDT File Extensions

QDT default file extension is .QDT and other similer related extensions are:

All Platform Software Programs for QDT File Extension

List of all softwares that can open the QDT files on each platforms such as Windows, Mac, iOS, Linux, Web and Android, you may click the each software link for more details for other supported formats for each software and the verified direct download links for each software with complete lisensing details.

Microsoft Windows logo image Open QDT File on Windows

Software License Developer
QEMU image. QEMU 000 for Windows Free QEMU

MacOs logo image - FileProInfo.comOpen QDT File on Mac OS

Software License Developer

Linux logo image - FileProInfo.comOpen QDT file on Linux

Software License Developer
QEMU image. QEMU 000 for Linux Free QEMU

Website logo image - FileProInfo.comOpen QDT file on Web

Software License Developer

iOS logo image - FileProInfo.comOpen QDT file on iOS

Software License Developer

Android logo image - FileProInfo.comOpen QDT file on Android

Software License Developer

About Licensing

  1. Free Trial This software are often used for an attempt period, like 14 days, before requiring payment. Some trial versions have a reduced feature set.
  2. Free This software is liberal to use. Examples include open-source , freeware software, like free programs supported by advertising.
  3. Free+ This software is liberal to download and use, but contains in-app purchases (IAP) to unlock additional content or functionality.
  4. Paid This software must be purchased so as to use it. it's going to be offered as a perpetual license or ongoing subscription.
  5. Included with OS This software is bundled with an OS , like Windows, macOS, or Android.

QDT file extension icon image.About QDT - Quicken 3 & 4 Data File

FileProInfo is to help you understand about the Quicken 3 & 4 Data File with *.QDT suffix, and provide the complete detail as how to open, edit, convert, merge, split and compare it with other related software programs, software download links and free online apps and tools.

Our professional team members at FileProInfo have been individually researched and verified the details for QDT. We want to be 100% accurate and publish the information about file formats, tools, apps and software programs that we have tested and validated.

If you would like to suggest any additions or updates to this page for QDT, please let us know.

Updated 7/1/2025