Due dates,
predicted.
Gestation and due-date calculators for dogs, cats, livestock and small pets. Free, instant, and private.
Jean Borg
Founder & developer · How I build these →
Pregnancy · example
Dog due date
Due date
Aug 3
Mated Jun 1 · 63 days
9
Animal pregnancy tools
100%
Free, no sign-up
0
Data stored
1 hr
To build a request
All 9 tools
Browse every animal pregnancy calculator.
Companion animals
Transparent math
Due dates from real
gestation periods.
No black boxes. Every tool shows the exact method or formula it used – so you can check it, trust it, and learn it.
Try the Dog Pregnancy ›# Typical gestation
Dog ≈ 63 days
Cat ≈ 64 days
Cow ≈ 283 days
Horse ≈ 340 days
Goat / Sheep ≈ 150 daysQuestions
Animal pregnancy questions.
Are these animal pregnancy calculators really free?
+
Yes – every one is completely free, with no sign-up, no account, and no paywalled results.
How accurate are the results?
+
They use typical species gestation periods and are estimates for planning – not a substitute for veterinary care.
Is my data saved anywhere?
+
No. Every calculation runs locally in your browser – nothing you enter is stored or sent anywhere.
Can you add a animal pregnancy calculator I need?
+
Yes – request it via the contact page and it can be built and made live fast, free of charge.
The developer
Built by a real person.
Jean Borg
Founder & developer · freecalculators.pro · Malta
I build and maintain every calculator on this site myself, from my desk in Malta. No faceless company and no outsourced content – each tool is coded by hand, shows the exact formula it uses, and gets fixed the moment something’s off. Need a calculator that isn’t here yet? Email me and it’s usually live within the hour, free.
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