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Trusted by employees at these brands

Employees of some of the world's most well-known brands rely on Zamzar to convert their files safely and efficiently, ensuring they have the formats they need for the job at hand. From global corporations and media companies, to respected educational establishments and newspaper publications, employees of these organisations trust Zamzar to provide the accurate and reliable conversion service they need.

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Zamzar has converted over 510 million files since 2006

For every 10,000 files converted on Zamzar, we'll plant a tree. By using Zamzar you are helping to make a difference to our planet

We're committed to regular charitable giving. Each month we donate at least 2% of our company profits to different charities

From your personal desktop to your business files, we've got you covered

We offer a range of tools, to help you convert your files in the most convenient way for you. As well as our online file conversion service, we also offer a desktop app for file conversions straight from your desktop, and an API for automated file conversions for developers. Which tool you use is up to you!

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Convert over 150 different file formats

Convert documents, videos, audio files in one click

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One simple API to convert files

100s of formats for you to choose from

Documents, videos, audios, images & more...

Why choose Zamzar?

With Zamzar, file conversions are easy, reliable and convenient, so you can quickly convert your documents, images, videos, and more, to the formats you need. With faster downloads of converted files, and friendly and helpful support when you need it, you'll have everything you need to work with your files.

Because you don

Any Operating System

Because you don't need to download any software for Zamzar to convert your files, you don't need to worry about what operating system you’re running.


Fast Downloads

There's no requirement to register or sign up for our file conversion tool, which means you can get going right away.

With hundreds of file formats supported, you won

Multiple File Formats

With hundreds of file formats supported, you won't need to go anywhere else to convert your files.

We believe you should be able to convert files no matter what language you speak or what country you live in, which is why we support so many languages.

Available In Many Languages

We believe you should be able to convert files no matter what language you speak or what country you live in, which is why we support so many languages.

Tools to suit your file conversion and file compression needs

You'll find all the conversion and compression tools you need, all in one place, at Zamzar. With over 1100 file-conversion types supported, whether you need to convert videos, audio, documents or images, you'll easily find what you need and soon have your files in the formats and sizing that work for you.

PPT Document Format

PPT Converter

Microsoft developed the PPT format for PowerPoint, which is mostly used for creating and editing presentations. PPT files normally comprise slides of text, images and animations that can play as timed or manually controlled slideshows. Users can build presentations from scratch or use an online or company corporate template. PowerPoint is the most widely used format for presentations in both educational and work settings. It can also be used for creating reports, which users often save or print as a PDF.

Since 2007, PPTX has been Microsoft’s standard file format for PowerPoint. However, even if you have a newer version of the program, you can still use it to open older PPT files, and also to save presentations into PPT format. PowerPoint is part of the Microsoft Office suite, but some other programs, like LibreOffice, Apple Keynote or Google Slides, can also open both PPT and PPTX files.

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PPTX Document Format

PPTX Converter

The PPTX format was developed by Microsoft and has been the default format for PowerPoint files since 2006. Along with similar updates for other Microsoft Office formats, it was designed to replace the older PPT format. The additional X at the end represents the open XML format that makes it easier for users to share and view Microsoft Office files in other programs.

Microsoft PowerPoint is used mostly for creating and delivering presentations, which can include text, graphics, animations, embedded video content and interactive elements. It is also commonly used by organisations and students to create reports, which are usually converted into PDF before sharing or publishing. As well as opening in PowerPoint itself, PPTX files will also open in Google Slides, Apple Keynote and LibreOffice. You can also use PowerPoint to save files into the older PPT format, as well as to save PowerPoint slide shows into PPS or PPSX format.

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How to convert a PPT to a PPTX file?

  1. 1. Choose the PPT file that you want to convert.
  2. 2. Select PPTX as the the format you want to convert your PPT file to.
  3. 3. Click "Convert" to convert your PPT file.

Convert to PPTX

Using Zamzar, it is possible to convert a variety of other formats to PPTX files:


Frequently asked questions

If you’ve got any questions about converting or compressing files with Zamzar, we’re happy to help! We’ve answered a few commonly-asked questions below, to get you started, and you can find out more information about file conversion and compression with Zamzar, in our Help centre.

You can change PPT to PPTX within PowerPoint itself by exporting your file as a PPTX file, but there is another way without opening individual files. Online file conversion tools like Zamzar let you upload a PPT file and convert it to PPTX in real time. Zamzar’s website is secure and free for most users, and you can also convert multiple files at once.

PPT and PPTX are both Microsoft PowerPoint files, but PPTX is the newer version developed for Office 2007. PPT files will open in later versions of PowerPoint, so you should be able to open them in the program and then save them as .pptx files. If you don’t have PowerPoint, or you want to convert files without opening them, an easy way is to use a file conversion tool like Zamzar. Just upload one or more files to the tool on Zamzar’s website, select to convert them to PPTX and then download. You’ll then have the files in both formats.

You can change a PPT file format by opening it in PowerPoint and resaving it in another format like PPTX or PDF. If you don’t have PowerPoint, you can also convert PPT files for free with an online conversion tool like Zamzar. The tool on Zamzar’s website just has three steps – upload, convert and download.

You may also be able to rename a file extension from .ppt to .pptx in File Explorer. However, it’s recommended to save a copy before you try this method in case the file becomes corrupted.

PPTX is the newer version of PowerPoint, so it has a number of advantages over PPT, including more options for fonts, graphics, animations and interactivity. If you need to convert a PPT file to PPTX, you can do this by opening the presentation in PowerPoint and then saving it as a .pptx file. You can also convert files between PPT and PPTX with tools like the one on Zamzar’s website. Simply upload your PowerPoint file, select to convert it to the other format, and then download the new copy of the presentation.

It’s easy to save a file as PPTX, either with PowerPoint or an online conversion tool like the one on Zamzar’s website. If you have a PPT file or a file in another format, simply upload it to Zamzar’s secure online tool, click to convert it to PPTX and then download the new file. You can also download file conversion software, but the advantage of an online tool like Zamzar is that you can convert files without installing anything new on your device.