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Calcimator

Automated Weighing Calculator

Project weight gain trajectory from walk-over scale data. Estimate days to market weight, feed requirements, and revenue per head.

Inputs

$
$

Results

Days to target weight

219

Feed per head (lbs)4,550
Total feed (tons)113.8
Total feed cost$34,125.00
Feed cost per head$683.00
Revenue per head$2,498.00
Gross margin per head$1,815.00
Weekly gain target (lbs)22.4
Total Revenue$124,875.00
How to Use This Calculator
  1. Enter Current weight (lbs), Target weight (lbs), and Average daily gain (lbs).
  2. Set Number of head, Feed conversion ratio, and Feed cost ($/ton).
  3. Adjust Sale price ($/lb live) as needed.
  4. Review the Days to target weight result.
  5. Use Feed per head (lbs) and Total feed (tons) to inform your decision.

How the result changes with Target weight (lbs)

Target weight (lbs)Days to target weight
5010
1,751344
3,250813
4,5001,203

What each input means

Current weight (lbs)
Current average body weight per animal.
Target weight (lbs)
Target market or finish weight.
Average daily gain (lbs)
Expected or measured average daily gain.
Number of head
Animals in the group.
Feed conversion ratio
Lbs of feed per lb of gain (beef cattle: 5–8).
Feed cost ($/ton)
Cost of complete ration per ton.
Sale price ($/lb live)
Expected sale price per pound live weight.

What each result means

Days to target weight
Estimated days until animals reach target weight.
Feed per head (lbs)
Total feed consumed per animal over the period.
Total feed (tons)
Total feed needed for entire group.
Total feed cost
Total feed expense for all animals.
Feed cost per head
Feed cost per animal over the feeding period.
Revenue per head
Gross revenue per animal at target weight.
Gross margin per head
Revenue minus feed cost per animal.
Weekly gain target (lbs)
Expected weekly weight gain for monitoring consistency.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Current weight (lbs) = 650, Target weight (lbs) = 1350, Average daily gain (lbs) = 3.2, Number of head = 50 = 7 input(s) provided
  2. Calculate Days to target weight
    Days to target weight = weightToGain / adgLbs
    219 = 219
  3. Calculate Feed per head
    Feed per head = weightToGain * feedConversionRatio
    4550 = 4550
  4. Calculate Total feed
    Total feed = (feedPerHeadLbs * numHead) / 2000
    113.8 = 113.8

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