Unix2Win is a tool that converts ASCII text files from Unix to Microsoft Windows format or vice versa.

Unix uses character code 10 (line feed) to separate text lines while Windows uses a combination of 13 (carriage return) and 10.

The free version lets you convert one file at a time. You can choose whether to save converted files to a common directory or to the original directory but adding a "_conv" suffix. F.e. data.txt becomes data_conv.txt.

If you need to convert large numbers of files you may be interested in the advanced version which allows you to convert multiple files in one step. It is available for a small fee of 13 USD.