We you figure out the amount you will be surprised because the number is really small if you compare it with visa transactions.

You can go to the block explorer and see the amount of transactions in the last 10 blocks.


The one with the biggest amount of transactions is 2,945 tx on it, and tx are each 10 minutes. so, taking about seconds i would say:

2954/60=4.92 transactions/second.

There is an estimate, but remember each transaction has it's own size in Bytes, and each block has a limit, which means some one could make a 1MB transaction to fill one block. That would take tons of inputs and outputs, but it's possible,