https://www.ilovezip.com/zip-to-rar
Online ZIP to RAR File Converter | iLoveZIP
Convert ZIP to RAR format with one click, fast and efficient, keep files intact, support batch conversion operations.
zip to rarfile converteronlineilovezip
https://www.rarlab.com/download.htm
WinRAR archiver, a powerful tool to process RAR and ZIP files
WinRAR is a Windows data compression tool that focuses on the RAR and ZIP data compression formats for all Windows users. Supports RAR, ZIP, CAB, ARJ, LZH,...
a powerful toolwinrararchiver
https://www.rarlab.com/
WinRAR archiver, a powerful tool to process RAR and ZIP files
WinRAR provides the full RAR and ZIP file support, can decompress CAB, GZIP and other archive formats
a powerful toolwinrararchiver