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Enter the breeding date and, if you want days remaining and progress, a reference date (leave it blank to use today). The calculator adds the typical pig gestation of 114 days to the breeding date, shows the normal 110 to 117 day farrowing window, and works out days remaining and progress through gestation. This is a planning estimate only: it does not confirm pregnancy, and a veterinarian should check any animal that passes its window.
A sow bred on 2026-01-01 has an estimated farrowing date 114 days later, with a normal window from 110 to 117 days after breeding. Pig gestation follows the well known 3 months, 3 weeks and 3 days rule, which adds up to 114 days. Sows are more predictable than most livestock, which makes farrowing house scheduling more precise. Use this gestation chart and date estimator for your breeding records.
Start close watching a few days before the window opens, and prepare a clean, dry, warm farrowing pen with bedding, water and a farrowing kit. Signs of near farrowing include udder filling, milk let down, restlessness and nesting behaviour. Keep the sow calm, check piglets are breathing and suckling, and call a veterinarian early if labour stalls.
Three months, three weeks and three days is an easy memory aid for 114 days, and it works well for standard breeds. Record breeding dates, farrowing dates and litter sizes for every sow, and move sows into farrowing housing a few days before the window opens so they settle before labour starts.
About 114 days on average, with a normal range of about 110 to 117 days. Individual animals vary by breed, litter size and condition.
Add the typical gestation length to the breeding date. For a pig bred on 2026-01-01, the estimated due date is pig plus 114 days.
Because healthy births fall across a range, not on one day. Plan your watch period from the window start, and prepare facilities before it opens.
No, it is a planning estimate only. Pregnancy must be confirmed by observation or veterinary examination, and a false pregnancy or wrong breeding date can make the estimate wrong.
Three months, three weeks and three days after mating, which adds up to 114 days of gestation.
About 4 months, or 114 days on average, with a normal range of about 110 to 117 days.
Contact a veterinarian promptly, especially if the animal strains without progress, stops eating, looks weak, or has discharge. Do not decide alone that a pregnancy is overdue.
If animals were exposed over several days, run the calculator from the earliest and latest possible breeding dates and use the wider combined window for planning.
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