Skip to content
Go to file
This branch is 2006 commits ahead of svn2github:master.


NuGet Version NuGet Badge FOSSA Status Analytics
This project is the .NET version of POI Java project. With NPOI, you can read/write Office 2003/2007 files very easily.

Get Started with NPOI

DON'T use dotnetcore/NPOI anymore

a. This project is NOT in maintainence for at least 2 years (no update after 2018)

b. It's a migrated .net core version of NPOI 2.2.1 (which is published 4 years ago)

c. They betray the open source spirit. All the git history from NPOI team are deleted. Neuzilla studio info is removed. Original Readme.txt is removed (all the contributors of NPOI are removed.)


Big thanks to all NPOI contributors!!!

Telegram User Group

Join us on telegram:

NOTE: Stop using QQ or wechat since big brothers are watching you

Advantage of NPOI

a. It's totally free to use

b. Cover most features of Excel (cell style, data format, formula and so on)

c. Supported formats: xls, xlsx, docx.

d. Designed to be interface-oriented (take a look at NPOI.SS namespace)

e. Support not only export but also import

f. Real successful cases all over the world

g. huge amout of basic examples

h. Works on both Windows and Linux How to use NPOI in Linux

System Requirement

.NET Standard 2.0 (.NET Core)

.NET Framework 4.0 and above


a .NET library that can read/write Office formats without Microsoft Office installed. No COM+, no interop.




Sponsor this project


No packages published


You can’t perform that action at this time.