EBMcalc is a unique computerized medical reference and tool set. EBMcalc encompasses a wide array of pertinent medical formulae, clinical criteria sets and decision tree analysis tools used everyday by clinicians, medical educators, nurses and health care students of all types. With the growing emphasis and application of Evidence Based Medicine, there has never been a greater need for a system such as EBMcalc. Medical error detection and elimination are also hot topics in the new millennium. EBMcalc can help in these areas as well.