About Unit Conversion

The Système Internationale d’Unites (SI), or the International System of Units was recommended for use in the health professions by the World Health Assembly in 1977. This system is slowly being adopted in the United States and many journals now require its use.

Medical Unit Converter easily converts between US and International Human and Veterinary Medical lab values and Metric values. Enter a value in either the US or International input area and it will immediately be converted. Easily search for individual lab tests by typing in the name of the test.

The laboratory values and reference ranges are provided for illustration only and are not intended to be comprehensive or definitive. Each laboratory determines its own values, and reference ranges are highly method dependent.


Human References

  1. Kratz A, Ferraro M, Sluss PM, Lewandrowski KB. Laboratory reference values. N Engl J Med. 2004;351(15):1548-1563
  2. Young DS, Huth EJ. SI Units for Clinical Measurement. Philadelphia, PA: American College of Physicians; 1998
  3. Henry JB, ed. Clinical Diagnosis and Management by Laboratory Methods. 20th ed. Philadelphia, PA: WB Saunders; 2001
  4. Kasper DL, Braunwald E, Fauci AS, et al, eds. Harrison's Principles of Internal Medicine, 16th ed. New York, NY: McGraw Hill; 2004
  5. Goldman L, Ausiello D. Cecil Textbook of Medicine. 22nd ed. Philadelphia, PA: WB Saunders; 2004

Veterinary References

  1. Latimer KS, Duncan & Prasse’s Veterinary Laboratory Medicine: Clinical Pathology, 5th Ed., Wiley-Blackwell, 2011
  2. Kaneko JJ, Harvey JW, Bruss ML, Clinical Biochemistry of Domestic Animals, 6th Ed., Academic Press, 2008