How much is $100 worth in Hawaii?

Excuse me, I was wondering if you could help me understand something. I'm planning a trip to Hawaii and I'm trying to budget my expenses. I've been trying to figure out how much $100 in my local currency would be worth in Hawaii. Do the exchange rates vary significantly depending on where I go in the state, or are they relatively consistent? And is there anything else I should be aware of when it comes to managing my money while I'm there? Thank you for your help!