The math every breeding program runs on — heat timing, due dates, and puppy milestones — built on the same engine that powers Whelpify dashboards.
Predict your female dog's next heat and likely fertile window from her last heat date — with an honest ± range, not a fake-precise date.
Open the calculator When are the puppies due?Calculate when the puppies are due from the ovulation date, LH surge, or breeding date — plus a pregnancy timeline with ultrasound and X-ray windows.
Open the calculator From birth to go-home day, mapped out.Enter a litter’s birth date and get the full development timeline: eyes opening, weaning, first vaccines, socialization windows, and go-home day.
Open the calculator How big will this puppy get?Estimate a puppy's adult weight from their current age and weight using size-class growth curves — with an honest range, plus when they'll finish growing.
Open the calculatorSet up your whole system in minutes — from litters and puppies to payments and applications. Try everything free for 30 days; plans start at $29/month after.
30 days free. Cancel anytime before the trial ends and pay nothing.