Livestock Calculators
Calculators for goats (150d), cows (283d), sheep, and pigs — pregnancy, feed, weight and more.
- Goat Pregnancy CalculatorEstimate your doe's kidding date using breed-adjusted 145–155 day gestation. Nubian, Boer, Nigerian Dwarf, Alpine, Saanen supported.pregnancyOpen
- Cow Pregnancy CalculatorBreed-adjusted calving date calculator — Holstein 279d, Angus 281d, Hereford 285d, Jersey 283d. Trimester and calving prep.pregnancyOpen
- Sheep Pregnancy CalculatorEstimate your ewe's lambing date using the 147-day gestation. Breed-adjusted for meat, wool and dairy sheep.pregnancyOpen
- Pig Pregnancy CalculatorCalculate your sow's farrowing date using the 114-day gestation ('3 months, 3 weeks, 3 days'). Farrowing prep milestones.pregnancyOpen
- Cattle Weight CalculatorEstimate cattle weight using the heart-girth formula. Separate equations for beef, dairy and calves.weightOpen
- Hay CalculatorCalculate how many bales and tons of hay you need for winter feeding. Works for cattle, horses, goats and sheep.feedingOpen
- Stocking Rate CalculatorCalculate the correct stocking rate (animal units per acre) for cattle, sheep and goats based on forage production.pastureOpen
- Goat Feed CalculatorCalculate daily hay, grain and mineral needs for meat, dairy and dwarf goats based on body weight and production stage.feedingOpen
- Goat Dewormer CalculatorCalculate goat dewormer doses (fenbendazole, moxidectin, levamisole) by body weight, guided by FAMACHA score.dosageOpen
- Calf Milk ReplacerCalculate daily milk replacer for dairy or beef calves. 10% of body weight in whole milk equivalent; adjust for season and growth target.feedingOpen
- Holstein Dry-Off CalculatorCalculate optimal dry-off date for Holstein dairy cows. 60-day dry period critical for mammary regeneration and next-lactation yield.breeddairyOpen
- Nigerian Dwarf KiddingNigerian Dwarf goat kidding date calculator. Shorter gestation than standard goats (145-153 days). Multiple kids common (2-5 per litter).breedpregnancyOpen
- Boer Goat FeedFeed calculator for Boer meat goats. Higher protein (16-18%) for fast growth; creep feeding of kids starts at 2 weeks.breedfeedingOpen
- Angus FeedFeed calculator for Angus beef cattle: cow-calf, background, finishing phases. ADG targets 2-4 lb/day in finishing.breedfeedingOpen
About livestock in the United States
FurCalc's livestock calculators serve small-farm and hobby-farm operators raising cattle, goats, sheep, pigs, and similar species. Math covers pregnancy timing (gestation varies from 114 days for pigs to 283 days for cattle), feeding ratios, dewormer doses (with FAMACHA scoring), hay planning, and pasture stocking.
Why livestock calculations differ from pet calculations
Livestock economics demand precision — a 10% feed overage across 30 animals is real dollars. Our calculators are built from USDA, university extension (Penn State, Kentucky, Nebraska), and breed-association data rather than generic pet-owner content.
Livestock calculator FAQ
Do you cover small-scale / homestead operations?
Yes. Our stocking rate, hay, and goat feed calculators default to small-herd assumptions. For commercial scale (500+ head), consult an agricultural economist — our tools assume typical US small-farm inputs.
Can I use horse feed for goats or cows?
No. Goats need copper; sheep need no copper (or low). Cattle and horses differ in salt and fiber needs. Our species-specific calculators reflect those differences.
How accurate are these calculator results?
Our calculators implement the exact formulas used in veterinary textbooks, AAFCO/NRC nutrition standards, AAHA/AAFP life-stage guidelines, and peer-reviewed research. Results are accurate within the precision of the input data. For medical decisions (toxicity, drug dosing, diabetic insulin), always confirm with your veterinarian — calculators are educational tools, not clinical devices.