I set up custom search keywords in every browser I use for this, among many other custom searches. In that particular case I query xe.com from an address bar search (not affiliated with them I've just always used the site) as xe <amount> for my most common currency conversion and others like xeyen for Japanese rates, xegbp for British Pound, etc. Takes me right to the page.

Even for various Google services I set them up to save unnecessary clicks.