Moisture content calculations

Calculating moisture content from wet weight and dry weight

Moisture Content of grain is usually determined on wet basis (wb), scientists sometimes use dry basis (db):

postharvest-mcwb postharvest-mcdb

MCwb = Moisture content wet basis [%]

MCdb = Moisture content dry basis [%]

Wi = Initial weight

Wf = Final weight

Conversion from MCwb to MCdb and back

Sometimes it is needed go convert from moisture content dry basis to moisture content wet basis.

postharvest-mcwb2db postharvest-mcdb2wb

Weight loss during drying

During drying, paddy grain will loose weight due to loss of moisture:


Wi = Initial weight [g]

Wf = Final weight [g]

Example: 1000 kg of paddy is harvested at 25% MC, and dried down to 14% MC, what is the final weight of the dried grain?

Final weight of grain = 1000* (100-25)/(100-14) = 872 kg of paddy at 14 % MC