Airtable supports syncing with Google Sheets.
For Microsoft Excel, you can do a manual import of your data into Airtable.
Otherwise, if you'd like to have a constant sync between Microsoft Excel and Airtable (or if you'd like to automate the importing of your Excel data into Airtable on a regular basis), you would need to custom build your own syncing solution using Make's Excel automations & integrations and Make's Airtable automations & integrations.
I demonstrate how to automatically import Excel CSV files into Airtable on this Airtable podcast episode.
p.s. If you have a budget for your project and you’d like to hire an expert Airtable consultant to help you with any of this, please feel free to contact me through my website: Airtable consulting — ScottWorld