DKK/ISK: what to know
The DKK/ISK rate shows how much ISK you get for 1 DKK. Right now, 1 DKK buys 18.6700 ISK at the mid-market rate. In the other direction, 1 ISK is worth 0.0536 DKK.
In the short term DKK is driven mainly by its fixed peg to the euro, while ISK responds to tourism, fishing and commodity prices.
The Danish Krone (DKK) is issued by Danmarks Nationalbank. The Danish krone is tightly pegged to the euro within a narrow band. The Icelandic Krona (ISK) is issued by Central Bank of Iceland. After the 2008 crisis Iceland withdrew its cents (aurar) — only whole krónur circulate.
Use this mid-market figure as your benchmark: compare it with the rate your bank or broker quotes, and the difference is the margin you would pay.