Animal Nutrition · Problem-solving calculator
Dry Matter Intake Calculator
Estimate daily dry-matter and as-fed feed quantity from body weight, intake percentage, head count, and ration dry matter.
- Free to use
- Runs in your browser
- Level B · Industry formula
- Last reviewed 2026-08-16
Calculator guide
What this calculator helps you solve
Estimate daily dry-matter and as-fed feed quantity from body weight, intake percentage, head count, and ration dry matter.
Inputs explained
- Average body weight per animal (lb) — enter the value that applies to your operation or scenario.
- Dry matter intake (% of body weight/day) — enter the value that applies to your operation or scenario.
- Number of animals — enter the value that applies to your operation or scenario.
- Ration dry matter (%) — enter the value that applies to your operation or scenario.
Formula and methodology
Worked example
Fifty 1,200-lb animals consuming 2.5% of body weight as dry matter require 1,500 lb DM/day. At 55% ration dry matter, that is about 2,727 lb as-fed per day.
How to interpret the result
Use the result to translate an established intake target into feed quantity. Actual requirements vary with species, class, production stage, environment, ration quality, and health.
What to keep in mind
- The calculator does not prescribe an intake percentage; use qualified nutrition guidance for the appropriate target.
- Ration dry matter should be measured or based on reliable feed analysis when accuracy matters.
Review approach
This calculator uses deterministic arithmetic and performs the calculation locally in your browser. Its value comes from combining multiple operational inputs into a decision-oriented result rather than returning a one-line conversion.
Review standard: Level B · Industry formula. How calculator reviews work.
Frequently asked questions
What decision can this calculator support?
Use the result to translate an established intake target into feed quantity. Actual requirements vary with species, class, production stage, environment, ration quality, and health.
How is the result calculated?
DMI = Body Weight × DMI %; As-Fed Intake = DMI ÷ Ration Dry Matter %.
Are the assumptions universal?
No. Operational, regulatory, technical, and industry assumptions vary. Use values that apply to your situation and verify professional or regulatory requirements where relevant.
Does CalculateMeasure store the values I enter?
The calculation runs in your browser and does not require sending the entered calculator values to a server to produce the result.