Here's the deal.
You must not restrict your conversion to just an Apple platform. There are too many convertors out there and since this is not a word document but a database you could restrict yourself if you want but in this case I think that's a bad idea.
https://www.google.com/search?hl=en&as_q=Microsoft+works+database+conversion finds the usual and some are free.
You might need a PC to mediate this one.