How many acres are in a dunam?

Answer 1

I'd like to know where you're from, because "dunam" is a term used rarely in America. Most don't even know what it is! But since you're asking, here's the extended version of the answer:
A dunam in modern times is 1,000 square meters; this is equal to 10, 763.91 square feet.
An acre is 43, 560.174 square feet.
Since an acre is much larger than a dunam, I'm wandering why you're not asking, "How many dunams are in an acre?"
So I'm going to answer both question to eliminate any confusion.
There is less than one-fourth of an acre in a dunam (0.2471043 to be exact).
And there are over four dunams in one acre (4.0468727 to be exact).

Answer 2

The dunam was originally an amount of land that could be plowed in a day. Today's calculations have one acre equal to 4.05 dunams.

Answer 3

1 dunam = 1/4 (0.247105381) acres or 10,763.91 sq feet.

Answer 4

One dunam is equal to approximately 0.247 acres.