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The cubic inch is a unit of measurement for volume in the Imperial units and United States customary units systems. It is the volume of a cube with each of its three dimensions (length, width, and depth) being one inch long. The cubic inch and the cubic foot are still used as units of volume in the United States, although the common SI units of volume, the liter, milliliter, and cubic meter, are also used, especially in manufacturing and high technology. One cubic foot is equal to exactly 1,728 cubic inches because 123 = 1,728. ==Notation conventions== The following symbols have been used to denote the cubic inch: * cubic in * cu inch, cu in * inch^3, in^3 * inch³, in³ * c.i., CI * cui * c.i.d., cid, CID —for cubic inch displacement in internal combustion engines ==Equivalence with other units of volume== 1 cubic inch (assuming an international inch) is equal to: * 0.000578703703703 cubic feet (1 cu ft equals 1,728 cu in) * roughly 1 tablespoon (1.0 U.S. gallon = 256 U.S. tablespoons = 231 cubic inches) * about 0.554112552 American/English fluid ounces * about 0.069264069 American/English cups * about 0.000465025413 American/English bushels * about 0.004329 American liquid gallons (1.0 gallon equals 231 cu in exactly (in × 7 in × 11 in )) * about 0.00010307 barrels of crude oil (1.0 barrel equals 42 gallons, by definition, or 9,702 cu in) * exactly 0.016387064 liter (1.0 liter is about 61 cu in (61.0237440947323 cu in )) * exactly 16.387064 milliliters or cubic centimeters (which in turn is approximately 0.061 cu in) * exactly 0.000016387064 cubic meters(1.0 m³ is about 61,023.74 cu in) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「cubic inch」の詳細全文を読む スポンサード リンク
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