Excel can import CSV files, and most databases can dump data as CSV. You could potentially use something like Sequel Pro locally to do this.

Honestly, without knowing the WHY behind the need, it's tough to say what the right solution is.

Really, manually syncing an Excel document back and forth with a database seems like a complex and fragile solution to a problem. Is it possible you could remove the Excel sheet from the equation? Or use Google Sheets to make it available collaboratively online?

Depending on the problem you're trying to solve, there's probably a much easier solution that a SQL import/export.

I'd be happy to go over solutions and help you find a simpler way to solve this problem if you'd like. Just tag me for a quick call.

Good luck!