Biology & Life Science

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Dry Matter Calculator.

Calculate dry-matter and moisture percentages from measured masses.

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Set your values

Results update as you type.

02 / ANSWER

Dry mass

As-fed mass

Dry-matter fraction

0.2500

Dry matter

25.0000%

Moisture

75.0000%

Educational arithmetic only. Enter measured values and keep units consistent. No crop, feed, veterinary, or experimental recommendation is inferred.

Use Cases

Feed and Forage Analysis

Determine the dry matter content of livestock feed or forage to adjust rations and ensure proper nutrition.

Example: A hay sample has an as-fed mass of 500 g and a dry mass of 450 g, giving 90% dry matter.

Food Processing Quality Control

Monitor moisture levels in food products to ensure consistency and shelf stability.

Example: A dried fruit batch has an as-fed mass of 200 g and a dry mass of 170 g, indicating 85% dry matter.

Frequently Asked Questions

What does the dry matter calculator do?: It calculates the dry-matter percentage and moisture percentage from the dry mass and as-fed mass you enter. Dry matter is the mass remaining after all moisture is removed, expressed as a percentage of the as-fed mass.
How is dry matter percentage calculated?: Dry matter percentage is calculated by dividing the dry mass by the as-fed mass and multiplying by 100. Moisture percentage is then 100 minus the dry matter percentage.
What units should I use for the masses?: You can use any consistent mass units (e.g., grams, kilograms, pounds) for both dry mass and as-fed mass. The calculator will compute the percentages correctly as long as both are in the same unit.

Tips & Common Mistakes

Tips

Ensure both masses are in the same unit (e.g., grams) before entering them.
Use a consistent drying method (e.g., oven drying) to obtain accurate dry mass.
Record the as-fed mass immediately after sampling to avoid moisture loss.
For multiple samples, calculate each separately to see variability.

Common Mistakes to Avoid

Using different units for dry mass and as-fed mass, which leads to incorrect percentages.
Entering the wet mass as the dry mass, or vice versa, which reverses the result.
Forgetting that moisture percentage is 100 minus dry matter percentage.

Last updated: August 13, 2026

Use Cases

Feed and Forage Analysis

Determine the dry matter content of livestock feed or forage to adjust rations and ensure proper nutrition.

Example: A hay sample has an as-fed mass of 500 g and a dry mass of 450 g, giving 90% dry matter.

Food Processing Quality Control

Monitor moisture levels in food products to ensure consistency and shelf stability.

Example: A dried fruit batch has an as-fed mass of 200 g and a dry mass of 170 g, indicating 85% dry matter.

Frequently Asked Questions

What does the dry matter calculator do?

It calculates the dry-matter percentage and moisture percentage from the dry mass and as-fed mass you enter. Dry matter is the mass remaining after all moisture is removed, expressed as a percentage of the as-fed mass.

How is dry matter percentage calculated?

Dry matter percentage is calculated by dividing the dry mass by the as-fed mass and multiplying by 100. Moisture percentage is then 100 minus the dry matter percentage.

What units should I use for the masses?

You can use any consistent mass units (e.g., grams, kilograms, pounds) for both dry mass and as-fed mass. The calculator will compute the percentages correctly as long as both are in the same unit.

Tips & Common Mistakes

Tips

Ensure both masses are in the same unit (e.g., grams) before entering them.
Use a consistent drying method (e.g., oven drying) to obtain accurate dry mass.
Record the as-fed mass immediately after sampling to avoid moisture loss.
For multiple samples, calculate each separately to see variability.

Common Mistakes to Avoid

Using different units for dry mass and as-fed mass, which leads to incorrect percentages.
Entering the wet mass as the dry mass, or vice versa, which reverses the result.
Forgetting that moisture percentage is 100 minus dry matter percentage.

Use Cases

Feed and Forage Analysis

Determine the dry matter content of livestock feed or forage to adjust rations and ensure proper nutrition.

Example: A hay sample has an as-fed mass of 500 g and a dry mass of 450 g, giving 90% dry matter.

Food Processing Quality Control

Monitor moisture levels in food products to ensure consistency and shelf stability.

Example: A dried fruit batch has an as-fed mass of 200 g and a dry mass of 170 g, indicating 85% dry matter.

Frequently Asked Questions

What does the dry matter calculator do?

How is dry matter percentage calculated?

Dry matter percentage is calculated by dividing the dry mass by the as-fed mass and multiplying by 100. Moisture percentage is then 100 minus the dry matter percentage.

What units should I use for the masses?

You can use any consistent mass units (e.g., grams, kilograms, pounds) for both dry mass and as-fed mass. The calculator will compute the percentages correctly as long as both are in the same unit.

Tips & Common Mistakes

Tips

Ensure both masses are in the same unit (e.g., grams) before entering them.
Use a consistent drying method (e.g., oven drying) to obtain accurate dry mass.
Record the as-fed mass immediately after sampling to avoid moisture loss.
For multiple samples, calculate each separately to see variability.

Common Mistakes to Avoid

Using different units for dry mass and as-fed mass, which leads to incorrect percentages.
Entering the wet mass as the dry mass, or vice versa, which reverses the result.
Forgetting that moisture percentage is 100 minus dry matter percentage.