Newborn Puppy Weight Gain Calculator

Enter each puppy’s birth weight and today’s weight to check they’re gaining normally, with a clear status for every puppy in the litter.

When were they born?
Weigh in
Puppy weights
Good to know

Healthy newborn puppies usually gain 5–10% of their body weight every day and double their birth weight in about a week (VCA Animal Hospitals).

Disclaimer: A quick check, not a diagnosis. Call your vet about any puppy that is losing weight, not nursing, crying constantly or seems weak.

How much weight should newborn puppies gain?

Healthy newborn puppies gain about 5–10% of their body weight every day and double their birth weight in about one week (VCA Animal Hospitals).

The calculator works out the expected range for each puppy’s age (up to 2 weeks), compares it with today’s weight, and shows the average daily gain. After 2 weeks it checks that each puppy has at least doubled its birth weight.

How to weigh newborn puppies

  • Use a digital kitchen scale that reads in grams or tenths of an ounce.
  • Weigh each puppy at the same time every day, ideally before a feed.
  • Mark puppies with colored collars or yarn so you can tell them apart.
  • Write every weight down. The trend matters more than a single reading.

When to call your vet

  • A puppy is losing weight or is below its birth weight after the first day or two.
  • A puppy isn’t nursing, cries constantly, or feels cold or limp.
  • One puppy is falling well behind its littermates.

FAQs

How often should I weigh newborn puppies?

Every day for the first 2 weeks, then every few days. VCA recommends weighing routinely, daily to weekly.

What if a puppy isn't gaining weight?

Check that it's nursing well and staying warm. If it's losing weight or not gaining, call your vet the same day. Newborn puppies can go downhill quickly.

Are my numbers saved?

Yes, on this device only, so you can come back tomorrow and update today's weights.