Guinea Pig Pregnancy Calculator: Due Date and Timeline
Guinea pig pregnancy timeline and due date
This calculator estimates a guinea pig (cavy) due date and builds a clear timeline you can follow. You can calculate using a single “average” gestation length, or use a range to see both an earliest and latest expected due date.
How the due date is calculated
The core estimate is based on adding a gestation length (in days) to the breeding date:
\( \text{Due Date} = \text{Breeding Date} + \text{Gestation Days} \)
If you choose a range, the calculator also computes:
\( \text{Earliest Due} = \text{Breeding Date} + \text{Minimum Days} \)
\( \text{Latest Due} = \text{Breeding Date} + \text{Maximum Days} \)
Pregnancy progress and remaining days
To estimate how far along the pregnancy is, the calculator compares your breeding date to a reference date (usually today). It then computes:
\( \text{Days Pregnant} = \max(0, \text{Reference Date} - \text{Breeding Date}) \)
\( \text{Progress \%} = \frac{\text{Days Pregnant}}{\text{Gestation Days}} \times 100 \)
\( \text{Days Remaining} = \text{Gestation Days} - \text{Days Pregnant} \)
Simple vs. detailed timeline
Simple (weekly) gives a compact overview with fewer rows, which many pet owners find easier to follow.
Detailed (daily) lists each day from breeding to the expected due date and can be useful for very close monitoring.
Important practical notes
Inputs drive outputs: if you change the gestation days or switch to range mode, the due dates, progress, and timeline will update.
Overdue indication: if your reference date is past the expected due date, the calculator highlights this so you can reassess inputs or consult a veterinarian if you are concerned.
Not medical advice: individual animals vary, and only a qualified exotics veterinarian can assess pregnancy health and complications.