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Links to on-line unit conversions Because we are frequently asked about on-line unit conversions, we provide links for the convenience of users to several non-NIST sources. Under no circumstances does NIST endorse or warrant their values. Official values of conversion factors are available in the Appendix of NIST Special Publication 811 in html or pdf form. This document is also available free of charge by mail. Basic physical quantities. General unit, currency, and temperature conversion. Auf Deutsch. Freie Universität Berlin Basic physical quantities. Quick, elegant interface. Jan Derk Stegeman, Netherlands Many conversions, including unusual and ancient units. Graphically rich interface. MegaConverter Go to frequently asked questions

Detailed contents. About this reference. Feedback. Legal note: The web links identified above are provided in order to assist users of this information service. In no case does such identification imply recommendation or endorsement by the National Institute of Standards and Technology.