TMS FlexCel Studio for .NET

100% managed code Excel file manipulation engine & Excel & PDF report generation for .NET, Xamarin.iOS, Xamarin.Android, Xamarin.Mac

Also available for:


v7.12.1 (October 15, 2021)

Version history

Feature overview

  • Create applications, webservices and mobile device apps that read and write Excel files on the fly and fast with FlexCel Studio for .NET
  • Native .NET components (no additional OLE/dlls required) allowing to read, create and modify native Excel .XLS and .XLSX files without needing to have Excel installed
  • Supported Excel 2 to 2019 file formats
  • Runs on .NET 2.0, .NET 3.0, .NET 3.5, .NET 4.0, .NET 4.5, .NET 4.6, .NET 4.7, .NET 5, .NET 6, .NET Core, Windows Universal Apps, Windows Phone 8.1, Windows Store 8.1, Xamarin.iOS, Xamarin.Android, Xamarin.Mac and Mono
  • Exceptionally fast and solid hand tuned .XLS & .XLSX engine capable of generating thousands files per minute
  • Able to modify .XLS and .XLSX files and keep almost everything existing on the original file, from macros to activex objects
  • Support for formula recalculation supporting over 300 Excel functions
  • Ability to read and write encrypted .XLS and .XLSX files, including Office 2007, 2010 and 2013 encryption
  • Completely written in C# 100% managed code, with NO interop and NO p/invokes
  • Extensive API is available with which you can programmatically write and read files, with formatting info, images comments, etc.
  • Native PDF file export / report generation (PDF/A 1, 2 and 3 support)
  • Export to HTML in HTML 5 strict or XTHML 1.1 and fully standards compliant
  • Natively print and preview Excel files
  • Export to SVG
  • Report Engine that allows to create complex reports using Excel as your report designer, so your final users can modify them. You can use images/comments/conditional formats/merged cells/pivot tables/charts and almost anything you can think of on those reports
  • Full feature overview
  • Fully documented. FlexCel has a documentation center with guides, tips, full reference for every method and more than 50 working examples to help you get started.


Create a file only with code...

... or by writing tags inside a template ...

...where the tags will be replaced by data from a data source

When creating files with code, FlexCel includes a tool for converting Excel files to code.

Print and preview Excel files natively...

... or export them to pdf ...

... and html or svg

FlexCel supports Windows, macOS, iOS, Android, .NET core and more


What our customers say

Flexcel is an essential tool for working with Excel files in .NET. It is far less expensive to to develop Excel functionality in .NET with Flexcel than without it. I save several thousand dollars per year just in development, not including additional costs related to maintaining Office applications. TMS Flexcel Studio saves me enough money each year to buy many licenses for Office. I'm also very happy with the licensing and how much value TMS Software provides with my purchase. Even paid upgrades are a much better value than upgrades from other vendors. I enthusiastically endorse TMS Software and Flexcel Studio for .NET.

- Steve Parrish

It is easy to use and powerful. I use it in cosole vb.net apps focused on reporting and calculation and it is fast in generating files. The feature of reporting by tags or "direct reporting" once known is a fundamental shortcut in report creation. Not only it is fast, but also powerful and I can say this because I use it integrated with sql server: download data from sql, apply complex calculation by an excel template hand-defined in Excel, convert to values and upload back to sql server. Size of this is about 60K rows X 70 columns X 6 (separate files). It works, obviously it consumes almost all the available 4 gb ram but it works even in 32bit mode. When I use Flexcel I feel myself as I was driving a powerful sport car. Thank you very much.

- Giorgio Biondi

Just wanted to say that I'm very impressed by your component and the associated documentation. Since starting my company I've used quite a few third-party vendors, and the intuitive usage and excellent documentation on your product is outstanding. Makes interacting with Excel files very easy. Now, if only it was as easy to interact with an instance of Excel...

- Mark Sinclair-McGarvie

I've worked with Flexcel for the last two years and this is one of the greatest products I have ever had the pleasure of working with. It is FAST and it just plain works! They are super responsive in answering questions and they've even added features I've requested. If you need to generate reports, don't shell out money for Crystal (or whatever name it goes by this month) - Buy this and you will NOT be sorry.

- Bill

After looking carefully at all the Competitor products in detail and having worked with one competitor product extensively we decided to move to FlexCel - this was no small decision but we have been rewarded with the most powerful and complete implementation. .Net managed code and a huge set of features. With FlexCel we really push the boundaries and have found it is really up to the task. Most importantly when we needed new business critical functionality the guys on support have really responded and given us and the product features when they were needed. I would strongly recommend FlexCel from both a technical and service response point of view.

- Richard White MBus C.E.O.


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TMS FlexCel Studio for .NET

for Visual Studio .NET 2005, 2008, 2010, 2012, 2013, 2015, 2017, 2019, 2022, DOTNETCORE

View licensing FAQ
  • License for commercial use: Single developer license, Site license
  • Includes full source code
  • Free 1 year updates and new releases
  • After 1 year, a 70% discount renewal is offered for a one year extension (offer valid for 30 days)
  • Free priority support through email and forum

Single developer license

license for 1 developer € 195

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Site license

unlimited developers in the company € 775

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