With BinView (currently in beta) you can dissect any binary data easily from the comfort of your browser. Not only this tool will provide you with a pretty awesome HEX viewer but it will also help you unpack various types from int and float to 64bit float and more. BinView also comes with a built-in dissector to help you build structs to unpack the data into objects with support for field highlighting.
Even More Awesome Features
This tool includes many more awesome features you may not about.