Swine Gestation Calculator

Estimate how far along a swine pregnancy is and how long until the due date. Average gestation is about 114 days.

How the Math Works

The Swine Gestation Calculator uses a straightforward subtraction formula to determine pregnancy progress: remaining days = gestation length minus days since breeding. Swine gestation typically lasts 114 days (or 115-117 days for some breeds), so once you input the breeding date, the calculator subtracts the elapsed days from this total to show how many days remain until farrowing (baby pigs arrive). This simple arithmetic provides an accurate countdown to delivery day.

Practical Applications

To use this calculator, first record the exact breeding date for each sow or gilt. Enter this date into the calculator, which will automatically compute the days since breeding based on today's date. The calculator then applies the formula using the standard 114-day gestation period to determine your remaining days until farrowing. You can update the calculation daily to track progress and plan accordingly for the birth.

Day-to-Day Use

This calculator helps farmers prepare for farrowing by providing a reliable due date countdown. Knowing exactly how many days remain allows you to schedule assistance, prepare farrowing crates, ensure adequate feed and water, and arrange for veterinary support if needed. The daily tracking also helps identify any deviations from the expected timeline, enabling prompt intervention if complications arise, ultimately improving both piglet survival rates and sow welfare.

Worked example

If breeding was 30 days ago, swine has about 84 days to go.

FAQ