Convert Excel to RESX online
Upload a Excel file and download it as .NET RESX. Translation keys, plurals and placeholders are preserved. Free, no account needed.
Pick the source format or let the converter detect it from the file.
Choose the format you want to download.
XML resource files used by .NET, ASP.NET Core, Blazor, MAUI and WPF. Each data element holds a name, a value and an optional comment for translators.
Need it the other way round? Convert RESX to Excel.
From: Excel
An .xlsx workbook with translation keys in the first column and one column per language. Excel is the format most non-technical translators and reviewers are comfortable with.
Used by: Microsoft Excel, Google Sheets, LibreOffice. All languages in one file. Read the Excel format guide.
To: .NET RESX
XML resource files used by .NET, ASP.NET Core, Blazor, MAUI and WPF. Each data element holds a name, a value and an optional comment for translators.
Used by: .NET, ASP.NET Core, Blazor, MAUI, WPF. One language per file. Read the RESX format guide.
<?xml version="1.0" encoding="utf-8"?>
<root>
<data name="WelcomeMessage" xml:space="preserve">
<value>Witamy w naszej aplikacji!</value>
<comment>To jest wiadomość powitalna wyświetlana na ekranie głównym.</comment>
</data>
<data name="ExitMessage" xml:space="preserve">
<value>Czy na pewno chcesz wyjść?</value>
<comment>Komunikat, który pyta, czy użytkownik chce opuścić aplikację.</comment>
</data>
<data name="SubmitButton" xml:space="preserve">
<value>Wyślij</value>
<comment>Tekst na przycisku wyślij.</comment>
</data>
</root>How to convert Excel to RESX
- Drop your .xlsx file into the converter above, or paste its content.
- Click Convert. You get one .resx file per language.
- Preview the result, copy it or download the files.
What changes between Excel and RESX
- Excel holds every language in one file, so the converter writes one RESX file per language found in the source.
Convert and translate in one place
If you need the RESX file in more languages, the fastest route is a free SimpleLocalize project: import the Excel file, add languages, run auto-translation with DeepL, Google Translate, OpenAI, Claude or Gemini, and download the result as RESX. The CLI does the same from CI with upload and download commands, so the conversion becomes part of your build. See also translating Excel files.
Frequently asked questions
Is the converter free?
Yes. There is no signup and no limit on the number of conversions beyond a few requests per second.
Are my files stored?
No. The file is parsed in memory, converted and returned in the same request. Nothing is written to disk or a database.
What about plurals and placeholders?
Plural forms are normalized to ICU message syntax and written back in the native form of RESX. Placeholders are kept, and Apple and Android specific syntax is translated between platforms. Read more in the pluralization guide.
Convert Excel to other formats
Translate your RESX files
- Import Excel or RESX files into a free project
- Auto-translate with DeepL, Google, OpenAI, Claude or Gemini
- Download in any of the supported formats or publish to the CDN