This article is tourism topic.
Today, most countries use the International System of Units (SI). Only United States, Burma, Liberia and to some extent also Great Britain use their own units.
In this article, the equal sign (=) is used, but the values are rounded.
Temperature
| ← icy | cold | cool | warm | hot | heat | frying | |||||||||
| ° C | 0 | 4 | 7 | 10 | 13 | 15 | 18 | 21 | 24 | 26 | 30 | 32 | 35 | 40 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ° F | 32 | 40 | 45 | 50 | 55 | 60 | 65 | 70 | 75 | 80 | 85 | 90 | 95 | 104 | |
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Length and distances
- 1 inch (1 ") = 2.54 cm
- 1 foot (1 ') = 30 cm
- 1 mile = 1.6 km
Mass
- 1 kg = 2.2 pounds
- 1 ounce = 28.54 grams
- 1 pound = 454 grams
In China, one Jing is almost exactly 500 grams.
Area
In small areas, square centimeters and square inches are used. 6.5 cm2 is about in2.
When measuring the square footage of dwellings, one square meter is about 11 square feet.
When measuring large areas, one acre is about 2.5 acres.
Volume
The standard unit of volume is the liter. However, several things are measured in milliliters (ml) or cubic centimeters (cm3). One teaspoon is about 5 ml, a tablespoon about 15 ml and one "fluid ounce" is about 30 milliliters.
In both the U.S. and the UK, 1 gallon is divided into four quarter-gallons and one quarter-ball is divided into 2 pints. However, the definition of a gallon is different in both countries. In the United States, a gallon is 3.78 liters, while in the United Kingdom it is 4.54 liters.