What this page does
Litter tools date a pregnancy window and add the costs or weights you type. They do not predict the hour of whelping.
From the mating date the page adds 58, 63, and 68 days. The due estimator walks the remaining time toward 9 weeks. Weaning bands are milk, gruel, weaning, then solid food, as topics, not orders.
Worked example: a mating on 1 August 2026 has an earliest day of 28 September, a midpoint of 3 October, and a latest day of 8 October (58, 63, and 68 days).
How the estimate works
Press Calculate for the date window or the cost split. A breed can set the size on the puppy-age count. It does not predict a whelping hour, and it does not change the 58, 63, and 68 day counts.
A mating date is not proof of pregnancy. A week count is only as good as the date you remember.
The midpoint is not the whelping day. Dogs can be early or late and still be within a normal talk with a clinic.
Limits
Litter cost divides your numbers by the puppy count. It is not a price list.
The mating example of 1 August 2026 is the default story on this cluster. Your date replaces it only after you calculate.
Why a window instead of one date?
Questions
Because gestation clusters around 63 days and still spreads. Publishing one day would look more precise than the biology is.