Guinea Pig Pregnancy Calculator
Estimate your guinea pig’s due date, current pregnancy stage, and key care milestones using the mating date, breeding date, or expected delivery date.
Quick cavy due date estimate
Guinea pig pregnancy is longer than many small pets. This calculator uses an average 68-day gestation and also shows an early-to-late due date window.
Important: guinea pigs can have serious pregnancy complications. Use this tool for planning only and contact an exotic pet veterinarian for medical advice.
Guinea Pig Gestation Calculator
Choose a calculation type, enter a date, and get an estimated delivery window.
Estimated Due Date
What Is a Guinea Pig Pregnancy Calculator?
A Guinea Pig Pregnancy Calculator helps estimate when a pregnant guinea pig, also called a sow, may give birth. By entering the mating or breeding date, the tool adds a typical cavy gestation length and displays an estimated due date plus a realistic delivery window.
Guinea pig gestation usually lasts around 59 to 72 days, with many owners using about 68 days as a practical average. Because individual pregnancies can vary, this calculator shows an early date, average date, and late date instead of relying on a single fixed day.
How to Use This Guinea Pig Due Date Calculator
Guinea Pig Pregnancy Timeline Chart
| Pregnancy Stage | Approx. Days | What to Expect | Care Focus |
|---|---|---|---|
| Early pregnancy | 1–21 | Signs may be subtle. Appetite and behavior can look normal. | Stable diet, gentle handling, avoid stress. |
| Mid pregnancy | 22–45 | Weight gain may become more noticeable. | Provide hay, vitamin C, fresh water, and clean bedding. |
| Late pregnancy | 46–58 | Abdomen becomes larger; movement may be felt. | Prepare quiet nesting area and monitor closely. |
| Due window | 59–72 | Birth may happen any time in the normal range. | Minimize disturbance and contact a vet if warning signs appear. |
Signs a Guinea Pig May Be Pregnant
Common signs include gradual weight gain, a rounded belly, increased appetite, firmer abdomen, and visible or felt pup movement later in pregnancy. However, these signs are not enough to confirm pregnancy with certainty.
Because guinea pig pregnancy can be risky, especially for older first-time sows, a veterinarian experienced with exotic pets is the safest option for confirmation and care advice.
Guinea Pig Gestation Reference Table
| Input Date | Calculation | Result |
|---|---|---|
| Mating date | Add 59 days | Earliest likely due date |
| Mating date | Add 68 days | Average estimated due date |
| Mating date | Add 72 days | Late due date estimate |
| Expected due date | Subtract 68 days | Estimated mating date |