Enter the weight of the material when wet and the weight of the material when dry to calculate the dry matter percentage.

## Dry Matter Formula

The following formula is used to calculate a dry matter percentage.

DM% = DW / WW *100

- Where DM% is the dry matter percentage
- WW is the total weight while wet
- DW is the total weight while dry

## Dry Matter Definition

Dry matter is a term typically used in the field of agriculture to describe the amount of feed that is dry weight, i.e. the percentage of the weight of a feed that is actual food and not water.

## Dry Matter Example

How to calculate dry matter?

**First, determine the wet weight.**Measure the total weight of the sample when wet.

**Next, evaporate all of the moisture.**Evaporate off all of the moisture from the feed, or drain the water to the best of your ability.

**Next, measure the dry weight.**Measure the weight after the moisture has been removed.

**Finally, calculate the dry matter.**Calculate the percentage of dry matter using the equation above.

## FAQ

**What is dry matter?**

Dry matter is defined as all weight that comes from sources other than water/moisture.