Home > Electronic Tutorials > Dictionary of Units/Measurements > Spread Rate (by Mass)

Dictionary of Units / Measurements

# Spread Rate (by Mass)

The spread rate of a substance is a measure of how much of it there is covering a unit area. The 'how much' can be measured by volume or by mass. The S I compatible unit of spread rate by mass is kilograms/square metre. It is also a measure of area density (mass/unit area) and is similar to - but not the same as - pressure, which is force/unit area. For the rainfall conversions a density of 1 kg/liter has been assumed. To change any of these other units of spread rate into their equivalent values in kilograms/square metre use the operation and conversion factor given. Those marked with # are exact. Other values are given to an appropriate degree of accuracy. The conversion for rainfall assumes a density of 1 kg/liter which is accurate enough for all practical purposes.
 grams/sq.centimetre    x 10 # grams/sq.metre         divide by 1000 # inches of rainfall     x 2.54 kilograms/hectare      divide by 10 000 # kilograms/sq.centimetre        x 10 000 # milligrams/sq.metre    divide by 1000 # millimetres of rainfall        1   kilograms/sq.metre     1   ounces/sq.foot         x 0.305 152 ounces/sq.inch         x 43.942 ounces/sq.yard         divide by 49.494 pounds/acre            divide by 8921.791 pounds/sq.foot         x 4.882 428 pounds/sq.inch         x 703.07 pounds/sq.yard         x 0.542 492 tonnes/hectare         divide by 10 # tons(UK)/acre          divide by 3.982 942 tons(US)/acre          divide by 4.460 896
Note: To report broken links or to submit your projects please send email to Webmaster

 Discover