Is it easier to use the calculator provided with a computer or a calculator online?

A computer can do everything a calculator can do, and more. On the other hand, a calculator can only be used for one thing- calculating.

The answer to this question depends on what you are using them for. If you need a device that is small, lightweight and inexpensive, then a calculator is the better choice. If you require a device that can do more than calculate numbers, doesn't need to be light weight, and price is not a problem, then a computer is probably better.