Density

Density is the shortened term generally used in place of the more accurate description volumetric density. It is a measure of mass per unit volume. The S I compatible unit of density is kilograms/cubic metre. However, this a rather large unit for most purposes (iron is over 7000, wood is about 600 and even cork is over 200). A much more useful size of unit is kilograms/liter (for which the previous values then become 7, 0.6 and 0.2 respectively). This unit also has the great advantage of being numerically unchanged for grams/cubic centimeter and tonnes/cubic metre (or mega grams/cubic metre). To change any of these other units of density into their equivalent values in kilograms/liter use the operation and conversion factor given. Those marked with # are exact. Other values are given to an appropriate degree of accuracy.

grains/gallon(UK) divide by 70 157

grains/gallon(US) divide by 58 418

grams/cubic centimetre 1

grams/litre divide by 1000 #

grams/millilitre 1

kilograms/cubic metre divide by 1000 #

megagrams/cubic metre 1

milligrams/millilitre divide by 1000 #

milligrams/litre divide by 1 000 000 #

kilograms/litre 1

ounces/cubic inch x 1.729 994 044

ounces/gallon(UK) x 0.006 236 023