Counting my calories?

Is there a website that I can enter what I eat and it will count my calories. Is there an easy way to count my calories? Such as for lunch I brought a meal from home, crock pot meal that has rice, potatos, carrots, celeary, onions and I don't know how to figure out how many calories that would be?!?! Anyway to figure out calories for items like that? Also I had a 12oz cup of coffee from circle K how do I know how many calories are in that? How do i find these things out to count them?