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Chart of conversion factors: From English to metric system and metric to English system

Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
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Abstract

The conversion factors in the following tables are for conversion of our customary (English) units of measurement to SI*units, and for convenience, reciprocals are shown for converting SI units back to the English system. The first table contains rule-of-thumb figures, useful for "getting the feel" of SI units or mental estimation. The succeeding tables contain factors accurate to 3 or more significant figures. Please refer to known reference volumes for additional accuracy, as well as for factors dealing with other scientific notation involving SI units.

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Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey. 1976. Chart of conversion factors: From English to metric system and metric to English system. https://doi.org/10.3133/70039401

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