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Feed Conversion Ratio Calculator

Enter total feed consumed and weight gained to calculate the feed conversion ratio, a standard measure of livestock feed efficiency. Runs entirely in your browser.

🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.

Example

Feed Conversion Ratio Calculator

Sample: 180 lbs feed, 60 lbs weight gain

Example shown — replace it with your own feed and weight gain numbers.

Feed consumed

180 lbs

Weight gain

60 lbs

Result

FCR: 3.0 (3 lbs feed per 1 lb of weight gain)

How it works

  1. Enter total feed consumed.
  2. Enter total weight gained over the same period.
  3. Get the feed conversion ratio.

The method

FCR is calculated as feed consumed divided by weight gained, the standard measure used to compare feed efficiency across animals or batches.

FAQ

What does a lower FCR mean?

A lower feed conversion ratio means an animal gained more weight per unit of feed consumed, generally indicating better feed efficiency and lower feed costs per pound of gain.

What is a typical FCR range?

Typical ranges vary widely by species and production system — poultry often run lower (more efficient) than cattle, so compare FCR within the same species and system for a fair benchmark.

Does this account for feed cost, not just quantity?

No — this calculates the efficiency ratio from weight of feed to weight gained; multiply by your feed's cost per pound separately to get cost per pound of gain.

How we compare

FeatureOnline Tool StoreManual division by handLivestock management software
No software installYesYesNo
Quick to startYesSlowSetup required
Free to useYesFreeOften paid

For a quick efficiency check without opening farm management software, this gets you the ratio instantly.

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