Creep Feed Calculator
Estimate added weaning weight, feed cost, and net return per calf from a creep feeding program, including the market's price slide.
Your numbers
50 calves, 75 days on creep at 4.0 lb/head/day
$17.30 net return per calf
- Total creep consumed
- 15,000 lb
- Added weaning weight per calf
- 37.5 lb
- Net return, whole group
- $865
- At this conversion and these prices, creep feeding is projected to add $17.30 per calf after feed cost and the price slide.
- Conversion is the number that makes or breaks this math. It is worse on good grass and better on thin or drought-stressed pasture, because creep substitutes for forage calves would otherwise eat.
- This model does not include feeder rental, labor, or the value of reduced grazing pressure on the cow herd — add those separately if relevant.
Show the math
- Feed consumed per head4.0 lb/day × 75 days = 300 lb
- Added weaning weight300 lb ÷ 8.0:1 conversion = 37.5 lb added
- Feed cost per head300 lb ÷ 2,000 × $340/ton = $51.00
- Price slide on the added pounds37.5 lb ÷ 100 × $9.00/cwt = $3.38/cwt slide
- Sell price after slide$235.00/cwt − $3.38 = $231.63/cwt
- Value of added pounds(588 lb × $231.63/cwt) − (550 lb × $235.00/cwt) = $68.30
- Net return per calf$68.30 − $51.00 feed cost = $17.30
Assumptions this calculator used
Nothing here is hidden. Change any figure you have better local data for.
Used only to apply the price slide to the added pounds at the right point on the price curve. Source: Typical fall-calving weaning weight; adjust to your herd average.
lb
How to calculate creep feed
Creep feeding pencils out or does not depending on three things: how much added gain you actually get per pound of feed (the conversion), what that feed costs, and how much of the added value the market's price slide takes back on heavier calves. All three numbers are specific to your pasture and your marketing plan, so a rule of thumb from a neighbor's operation on different grass will not transfer cleanly.
Feed consumed = intake (lb/day) × days on creep
Added weight = feed consumed ÷ conversion (lb feed per lb gain)
Feed cost/head = (feed consumed ÷ 2,000) × $/ton
Slide adjustment = (added weight ÷ 100) × $/cwt slide
Net return/head = value of added pounds after slide − feed cost
Worked example
Fifty calves are creep-fed for 75 days averaging 4 lb/head/day, for 300 lb of feed per calf. At an 8:1 conversion that is 37.5 lb of added weaning weight. At $340/ton, feed costs $6.38 per calf. If the base price is $235/cwt with a $9/cwt slide, the slide on 37.5 added pounds costs about $3.38/cwt, dropping the sell price to roughly $231.62/cwt on the heavier calf — the added pounds are still worth more than the feed costs in most years, but the margin is thinner than the sticker price of the feed suggests.
Common mistakes
- Using a flat industry-average conversion. An 8:1 conversion on drought grass can be 12:1 or worse on a lush year, because creep substitutes for grass the calf would have eaten anyway.
- Ignoring the price slide entirely. Treating every added pound as worth the full base $/cwt overstates the return, sometimes by a meaningful margin on calves already near the top of a weight bracket.
- Forgetting feeder and labor cost. Feeder rental, extra checking trips, and the risk of feeder-shy calves getting bullied off feed are real costs this math does not include.
- Creep feeding kept replacement heifers hard. Heavy creep feeding can deposit fat in the developing udder and reduce future milk production — go light or skip creep on heifers you intend to keep.
Typical creep conversion and added weaning weight by pasture condition
Approximate ranges seen in university creep-feeding trials over a 75-90 day feeding period. Actual results vary with creep formulation, calf age, and feeder management.
| Forage / creep type | Typical conversion | Added weaning weight | Notes |
|---|---|---|---|
| Drought / short native range | 5:1 - 7:1 | 40-60 lb | Highest return; creep is genuinely additive |
| Dormant winter grass, fall calves | 6:1 - 8:1 | 35-55 lb | Common wheat-pasture or stalk-field scenario |
| Average improved pasture | 8:1 - 10:1 | 25-40 lb | Most common commercial cow-calf result |
| Lush spring/summer grass | 10:1 - 14:1 | 15-30 lb | High substitution; creep often marginal |
| High-protein limit-fed creep (18-20% CP) | 6:1 - 9:1 | 30-50 lb | Better conversion than free-choice grain-based creep |
| Free-choice grain-based creep | 9:1 - 12:1 | 25-40 lb | Cheaper per ton but converts worse; higher intake |
| Creep with an ionophore (e.g. monensin) | 7:1 - 9:1 | 30-45 lb | Improves conversion modestly over the same base ration |
| Replacement heifers (light creep) | 10:1+ | 10-20 lb | Intentionally limited to protect future udder development |
Calculators to run next
- Cattle Mineral Intake CalculatorUse when consumption is running over or under label target and mineral costs are drifting.
- Silage Tonnage CalculatorUse to inventory a bunker before winter or to size a pile at harvest.
- Bunk Space CalculatorUse when timid cattle are falling behind or you are laying out a new pen.
- Dry Matter Intake CalculatorStart here — intake sets the size of every ration and feed budget that follows.
- Cattle Protein Supplement CalculatorUse when the hay tests short on protein and you need a feeding rate and a cost.
- Cost Per Pound of Gain CalculatorUse when deciding whether to feed cattle longer or sell them now.
Questions ranchers ask
Is creep feeding calves worth the cost?
It depends on the conversion, the feed price, and the calf market's price slide. At a 8:1 conversion, $320/ton creep, and a normal 8-10 cwt price slide, creep feeding weaned calves often nets $10-30 per head, but on lush grass with a poor conversion (12:1 or worse) it can lose money. Run your own numbers rather than a rule of thumb.
What is a typical creep feed conversion rate?
Creep conversion — pounds of creep feed per pound of added weaning weight — typically runs 6:1 on thin grass or drought-stressed pasture up to 10:1 or 12:1 on good grass where calves are already gaining well from milk and forage. The better the base forage, the worse the conversion, because creep feed substitutes for grass calves would have eaten anyway.
How much creep feed will a calf eat per day?
Intake typically starts near 0.5-1 lb per head per day in the first few weeks on creep and climbs to 2-3% of body weight by weaning if self-fed free choice, though most commercial creep programs limit intake with feeder design or a limit-fed protein/roughage mix to control cost and conversion.
Why does the price slide matter for creep feeding decisions?
The market pays less per hundredweight for heavier calves — the price slide. If creep adds 40 lb at weaning but the slide costs $8/cwt on that weight class, part of the added value is given back in a lower price per pound, not just the feed cost. Ignoring the slide overstates the return.
Does creep feeding replace milk or grass in the calf's diet?
Partially. Research consistently shows a substitution effect — creep-fed calves eat somewhat less forage and nurse slightly less than they would otherwise, which is exactly why the added gain per pound of creep feed (the conversion) is well below the calf's overall feed efficiency.
Should I creep feed replacement heifers?
Generally no, or only lightly. Heavy creep feeding of heifer calves intended to be kept as replacements can lay down excess fat in the udder that reduces future milk production, so most extension guidance limits or skips creep on retained heifers even when the steers on the same operation are creeped.
When should calves start on creep feed?
Most programs start creep 60-90 days before the planned weaning date, giving calves 8-12 weeks on feed. Starting much earlier extends the cost without much added gain since young calves eat very little creep; starting too late does not leave enough days to build meaningful pounds.
How does drought change the creep feeding decision?
Drought years typically improve the economics of creep feeding because pasture quality drops, forcing conversion rates down toward 6:1-8:1 as creep feed is genuinely additive rather than a grass substitute, and it also takes some grazing pressure off short pastures during the cow's last months of lactation.
Sell the pounds you actually put on
Added weaning weight only pays off if the buyer trusts the number on the scale ticket. Agrilot lots carry verified weights and seller records, so calves you creep-fed to a heavier, more uniform weaning weight sell on their real numbers instead of a buyer's guess.