The most common unit for measuring length, height, and depth in the Bible is a cubit, which is described at Ezekiel 40:5 as being ‘a forearm and a palm.’ Obviously, these lengths vary depending on the size of the person. Usually, however, a cubit is regarded as being somewhere around 19 to 22.5 inches (48 to 57cm).
However, to give you a better idea of the size and proportions of things in the Bible, we’ve converted the units of measure to more familiar terms, such as feet and inches (with metric conversions). Since they aren’t exact measurements, we’ve roughly averaged them for easy reading.
Also, some units, like a cor (about 32 bushels), a hin, or a bath (about 6 gallons), have been more roughly estimated because their exact ancient amounts are uncertain.
Finally, we’ve dropped the obscure names of coins, since their modern value (which continues to grow) is unfamiliar to modern readers. Instead, we just describe what type of coin they are (whether gold, silver, or copper), and sometimes the size of the coin, to provide you a relevant frame of reference.
For more information on Biblical measurements, see the Wikipedia article.