What’s the easiest way to convert some excel spreadsheets into an API and where do I host it?

I’m thinking of finding primary keys across the tables and using the headers, then convert the CSV tables to JSON and then deploy to firebase

You can deploy it to firebase or put it on GitHub as a repository. If you put it on GitHub, you can use GitHub pages to provide an API endpoint or just using the raw file on GitHub

Convert Excel to CSV as I mentioned before, and then u can use one of the following tools to convert it to JSON:

Afterwards, create a GitHub repo on or firebase app, then deploy it.

If you’re doing it from code, there are packages for NodeJs and Python-like the ones below that can help with the major task:

In addition, you can write a program to do the conversion upon uploading, which will then deploy the new API.