Cat Pregnancy Calculator Week-by-Week Tracker + Timeline Guide

If your cat recently mated and you’re wondering “Is my cat pregnant?” or “When will she give birth?”, this guide and Cat Pregnancy Calculator will help you follow every stage with confidence.

Cats can be confusing during their heat cycle: they yowl, rub, roll, and seem restless. After mating, early pregnancy signs are subtle and easy to miss. This page clears up what to expect, what’s normal, and how to prepare—plus a calculator to estimate the due date.

Just enter your cat’s mating or breeding date to get an estimated due window, current week, and a week-by-week plan.

 Cat Pregnancy Duration and Timeline

Average cat gestation is 63–65 days (about 9 weeks), but 58–70 days can still be normal. Duration can be influenced by breed, litter size, age, and overall health.

Stage-by-Stage Timeline

Stage	Duration	Key Development	Owner To-Do
Week 1–2	Days 1–14	Fertilization & implantation	Provide a high-quality diet
Week 3–4	Days 15–28	Nipples “pinking up,” mild swell	Schedule a vet check
Week 5–6	Days 29–42	Belly growth more noticeable	Set up a quiet nesting area
Week 7–8	Days 43–56	Milk production may begin	Minimize stress and visitors
Week 9	Days 57–65	Labor signs and delivery window	Prepare birthing box and kit

Cat Pregnancy Signs Week by Week

• Week 1–2: Slight appetite changes, more naps, subtle behavior shifts.
• Week 3–4: “Pinking up” of nipples (rosier color, slight enlargement), possible mild morning sickness.
• Week 5–6: Noticeable belly growth, steady weight gain, increased appetite.
• Week 7–8: Restlessness or extra affection, nesting behavior increases, milk may be present.
• Week 9: Marked nesting, decreased appetite, temperature may drop to ~99°F (37.2°C) 12–24 hours before labor.

Normal vs. Warning Signs

What you may see	Normal?	When to call the vet
Mild appetite increase	Yes	—
Nipple pinking and swelling	Yes	—
Clear vaginal discharge near labor	Sometimes	If discharge is green/black before any kitten appears
Vomiting once or twice	Sometimes	Persistent vomiting or lethargy
Temperature drop before labor	Yes	Fever > 103°F (39.4°C)
Straining during labor	Yes	Strong contractions > 20–30 min with no kitten
Long gaps between kittens	Sometimes	> 2 hours between kittens—call your vet
Overdue beyond Day 70	No	Call your vet
Heavy bleeding, foul smell	No	Emergency—seek help immediately

How to Tell How Far Along Your Cat Is at Home

• Check nipple color and size: pinking up often starts around Days 15–21.
• Observe appetite and activity: gradual appetite increase and calmer demeanor are common.
• Gentle abdominal observation: experienced handlers may feel movement after ~Day 45; never press hard.
• Use the calculator for timing: enter the mating date for a week-by-week estimate.

Caution: If you’re not trained, avoid palpation—pressure can harm kittens. For confirmation and litter count, ask your vet (ultrasound can detect pregnancy as early as ~Day 15; X-rays typically after Day 42 for counting).

Cat Pregnancy Chart (Breed-Wise) 🐾

Breed	Average Gestation	Typical Litter Size	Special Notes
Persian	64–69 days	3–5 kittens	Extra grooming, watch for dystocia
Siamese	63–67 days	4–6 kittens	Often slightly larger litters
Maine Coon	65–70 days	5–7 kittens	Large breed; later deliveries common
Domestic Shorthair	63–65 days	3–5 kittens	Standard duration, robust health

Persian Cat Pregnancy Calculator 🐈‍⬛

Persian queens may carry slightly longer and often have smaller litters. Their brachycephalic features can increase birthing difficulty in some lines.

Tips for Persian owners

• Temperature monitoring: Start daily rectal temps in Week 8 to spot a pre-labor drop. Establish a baseline first.
• Coat management: Trim long fur around nipples and perineum pre-labor for hygiene and nursing access.
• Nesting setup: Provide a low-entry, draft-free box lined with washable, non-loose bedding. Keep the environment quiet.
• Vet readiness: Discuss a birth plan and what to do if labor stalls or a kitten is stuck.

Cat Pregnancy Tracker App (Mobile Companion)

Track your queen’s week-by-week progress on the go.

• Push alerts: Next vet check, temperature checks, and due window reminders.
• Weight logging: Weekly weight and body condition tracking.
• Photo timeline: Compare belly growth photos week by week.
• Supply checklist: Auto-generated whelping kit and nesting essentials.
• Emergency quick-dial: One-tap call to your vet and 24/7 pet emergency resources.

Tips for a Healthy Cat Pregnancy

• Feed a high-quality, protein-rich diet (often kitten food in late pregnancy/lactation).
• Fresh water and a calm, safe environment.
• Regular vet checks; discuss deworming and parasite control.
• Avoid rough play, jumping from heights, and unnecessary travel.
• Prepare the nesting box by Week 8 and limit visitors.

Why Do Cats Need a Pregnancy Calculator?

• Predicts the delivery window to reduce last-minute stress.
• Helps plan vet visits and prepare a safe birthing area.
• Useful for breeders and first-time owners to track milestones.
• Encourages proactive care and early recognition of warning signs.

Conclusion

This guide combines veterinarian-referenced timelines and breeder best practices to help you prepare for a safe, low-stress delivery. Use the calculator to estimate your queen’s due window, follow the week-by-week checklist, and contact your vet if anything seems off. Consider this tool your companion from mating to meow.

Try the calculator now and get your cat’s due date instantly!