Free exchange rates for just about every currency in the world. Updated every five minutes, with easy to use navigation. Developers, check out our API details if you'd like to use our currency rates in your applications.
Thanks to Owen for pointing out that the JSON link was slow, I've remediated this now. The database eseentially slowed to a crawl, I've made a quick workaround and I'll make some further changes in the coming days to resolve the issue permanently