Hosted by the UCI Science Library, the Calculators Online Center Web site is presented by Jim Martindale. The site is an incredible collection of links to over 16,000 online calculators on nearly every subject imaginable, including science specific ones. Everything from archeology and biology to geology and meteorology is covered, each with its own brief description and direct link. Although it is a bit difficult to find specific calculators from the many listed (perhaps a search tool would be helpful), the site is a great accumulation of very helpful tools.