Cubic Kilometers to US Cups (km³ to cup)
1 cubic kilometer equals 4,226,752,837,730 US cups (rounded).
How to convert cubic kilometers to US cups
To convert cubic kilometers to US cups, multiply the number of cubic kilometers by 4,226,752,837,730. The factor is rounded to 10 significant digits. To go the other way, multiply US cups by 2.365882365×10⁻¹³.
US cups = cubic kilometers × 4,226,752,837,730
Example: 10 cubic kilometers = 42,267,528,377,304 US cups.
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
Cubic Kilometer (km³)
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
US Cup (cup)
One sixteenth of a US gallon, 236.588 mL (8 US fluid ounces). The standard US recipe cup.
Cups began as household drinking vessels, not scientific units, which is why they remain the messiest measures in the kitchen. The US customary cup was defined by slicing up the gallon: half a pint, or eight US fluid ounces, about 236.6 milliliters. Unlike the larger units, nobody ever fixed it to a physical vessel, so it exists only as a fraction of the gallon.
The customary cup is not the only American cup. For nutrition labels, US regulation defines a cup as exactly 240 milliliters, a rounder figure that sits slightly above the customary size. Packaged foods therefore list a serving in the legal cup while a measuring cup from the hardware store follows the customary definition. The gap is 3.4 milliliters, which hardly matters for soup but can matter in baking. Cup measures also hide the weight of dry ingredients, since a cup of sifted flour and a cup of packed flour differ substantially, which is why much of the world prefers grams.
1 US cup = 0.2365882365 liters (exactly).
Sources: Wikipedia: Cup (unit); NIST SP 811, Appendix B.8: conversion factors for volume; 21 CFR 101.9: nutrition labeling household measures
Related conversions
- US cups to cubic kilometers (reverse)
- Cubic kilometers to liters
- Cubic kilometers to milliliters
- Cubic kilometers to US gallons
- Cubic kilometers to US fluid ounces
- Liters to US cups
- Milliliters to US cups
- US gallons to US cups
- US fluid ounces to US cups
- Cubic meters to US cups
- Cubic centimeters to US cups
- US quarts to US cups
- US pints to US cups
- US tablespoons to US cups
- US teaspoons to US cups
- Metric cups to US cups
- Metric tablespoons to US cups
See all volume units.