US Fluid Ounces to Cubic Kilometers (fl oz to km³)

1 US fluid ounce equals 2.957352956×10⁻¹⁴ cubic kilometers (rounded).

1 US fluid ounce = 2.957352956×10⁻¹⁴ cubic kilometers

How to convert US fluid ounces to cubic kilometers

To convert US fluid ounces to cubic kilometers, multiply the number of US fluid ounces by 2.957352956×10⁻¹⁴. The factor is rounded to 10 significant digits. To go the other way, multiply cubic kilometers by 33,814,022,701,843 (rounded).

cubic kilometers = US fluid ounces × 2.957352956×10⁻¹⁴

Example: 10 US fluid ounces = 2.957352956×10⁻¹³ cubic kilometers.

Pints, quarts, gallons and fluid ounces differ between the US and the UK. Units are labeled 'US' or 'imperial' to avoid confusion.

About these units

US Fluid Ounce (fl oz)

US customaryCurrent unit

One 128th of a US gallon, 29.5735 mL. Not the same as the weight ounce, and about 4% larger than the imperial fluid ounce.

Fluid ounce began as an attempt to link volume to weight: the volume occupied by one ounce of some substance, such as wine in England or water in Scotland. Definitions varied by region and by liquid. When Britain defined its imperial gallon in 1824 as the space of ten pounds of water, the imperial fluid ounce came out so that an ounce of water weighs about one avoirdupois ounce. The US fluid ounce followed a different path and comes from the older wine gallon.

The US fluid ounce is exactly 1/128 of a US gallon, 29.5735295625 milliliters, about 4 percent bigger than the imperial one at 28.4130625 milliliters. American nutrition labels use yet another figure, treating one fluid ounce as 30 milliliters, a convenient rounding for serving sizes. The name is a trap, because a fluid ounce measures space while a weight ounce measures mass. A US fluid ounce of water weighs a bit more than an ounce of weight, while a fluid ounce of honey weighs considerably more.

1 US fluid ounce = 0.02957352956 liters (approximately).

Sources: Wikipedia: Fluid ounce; NIST SP 811, Appendix B.8: conversion factors for volume; 21 CFR 101.9: nutrition labeling household measures

Cubic Kilometer (km³)

ScientificCurrent unit

One billion cubic meters (a trillion liters). Used for very large volumes.

Picture a cube one kilometer on every edge: that is a cubic kilometer, equal to 1,000,000,000 cubic meters, or a trillion liters. The same volume is also called a teralitre, a name that follows the liter prefix system. Wikipedia converts it to about 810,713 acre-feet, or 0.2399 cubic mile.

Its scale places it among the largest everyday SI volumes. A cubic hectometer, the cube with 100 meter edges, equals one gigalitre, and a thousand of those make one cubic kilometer, which leaves the unit well above anything handled in tanks or reservoirs of ordinary size. The figure used here is 1,000,000,000,000 liters. Because one cubic mile is about 4.168 cubic kilometers, a figure in km3 is always smaller than the same volume in mi3, by that ratio.

1 cubic kilometer = 1,000,000,000,000 liters (exactly).

Sources: Wikipedia: Cubic metre; Wikipedia: Cubic kilometre

Related conversions

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