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Symbol | Definition |
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≡ | exactly equal |
≈ | approximately equal to |
= | equal to |
digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |
Australia, Canada, New Zealand, and some other members of the Commonwealth of Nations—being former British colonies that have since metricated—employ a "metric cup" of 250 millilitres. Although derived from the metric system, it is not an official metric unit.
1 cup | = | 250 | millilitres |
= | 16 2⁄3 | international tablespoons (15 ml each) | |
= | 12.5 | Australian tablespoons (20 ml each) | |
≈ | 8.80 | imperial fluid ounces | |
≈ | 8.45 | U.S. customary fluid ounces |
The pipe was a measure of liquid volume equalling two hogsheads. This equated to 108 imperial gallons (490 l) for ale or 126 imperial gallons (570 l) for wine (also known as a butt).