Free Sheep Farming Calculators
Practical calculators for lambing dates, sheep weight estimates, daily gain, target weight, feed cost, feed conversion, stocking rate and lamb profitability.
Sheep farming tools for quick field decisions
These are quick planning calculators built for field estimates. While these tools give you fast math, they are not a replacement for permanent farm records. HerdDeck is designed to track these decisions across the full flock so nothing is lost. These calculators are free to use and require no signup.
1. Breeding & Lambing
Lambing Date Calculator
Estimate lambing dates based on breeding records.
Best for: Predicting when a specific ewe is due.
Open calculator →Lambing Calendar Generator
Plan your whole lambing season based on your flock's breeding window.
Best for: Preparing barn space and farm labor.
Open calculator →2. Weight & Growth
Sheep Weight Calculator
Estimate a sheep's weight using heart girth and body length.
Best for: Dosage estimates when a scale isn't available.
Open calculator →Average Daily Gain Calculator
Calculate the daily growth rate of lambs between weigh-ins.
Best for: Tracking animal performance over time.
Open calculator →Target Weight Calculator
Find out exactly how many days until a lamb hits target sale weight.
Best for: Booking slaughter or market dates.
Open calculator →3. Feed & Profit
Feed Cost Calculator
Estimate the total cost of feed needed to get a lamb to its target weight.
Best for: Budgeting finishing feed.
Open calculator →Feed Conversion Ratio Calculator
Calculate how efficiently your lambs are turning feed into weight.
Best for: Evaluating feed quality and genetics.
Open calculator →Lamb Profit Calculator
Determine your break-even sale price and estimated profit margin per lamb.
Best for: Pre-sale financial check.
Open calculator →4. Pasture & Capacity
5. Farm Planning & Startup
Sheep Farm Startup Cost
Estimate the capital required to start a sheep farm based on land, housing, animals and equipment.
Best for: Business planning and budgeting.
Open calculator →4. Pasture & Capacity
Stocking Rate Calculator
Determine how many sheep your pasture can support over a grazing season.
Best for: Avoiding overgrazing.
Open calculator →Livestock Unit Calculator
Calculate your flock's total livestock units.
Best for: Meeting regulatory grazing limits.
Open calculator →