Ropani, aana, bigha and kattha: how do land units convert?

In the hills, land is measured in ropani, aana, paisa and daam (1 ropani = 16 aana = 5,476 sq ft). In the Terai it's bigha, kattha and dhur (1 bigha = 20 kattha = 72,900 sq ft).

Use the land unit converter to convert between any of them.