Is there a proverb that means “to solve two problems at once”?

Question

In my language, we have a proverb that means "to solve two problems with only one solution". It would be literally translated as:

I've killed two bunnies with only one hit

How would this be said in English? Is there a proverb with such a meaning?

Answer 1

I believe you're looking for (killing) two birds with one stone.

Apparently, it's a very old idea.

Though, as comedian Demetri Martin observes:

When in history has there ever been a surplus of birds and a shortage of stones?

Answer 2

English has a similar phrase:

I killed two birds with one stone