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Puppy Weight Predictor

Predict a puppy's adult weight from breed, current age and current weight.

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Puppy Weight Predictor works straight from this page — free, instant, nothing to install. You will find it under Pets & animals, with Baby Eye Color Predictor and Chinese Gender Predictor for the neighbouring cases.

How to use it

  1. Open the tool — no signup or install needed.
  2. Enter your input or adjust the available options.
  3. Get your result instantly, then copy or download it.

Frequently asked questions

What is Puppy Weight Predictor?

Predict a puppy's adult weight from breed, current age and current weight.

When would I actually use this?

Day-to-day care: how much to feed at a given weight, whether a size is right for the breed, and what a life stage means in human terms.

What is the most common mistake?

Using the seven-years rule for a dog's age. Ageing is fast in the first two years and then slows, and it slows much more for a small breed than for a large one — the multiplier is not a constant.

How is Puppy Weight Predictor different from Baby Eye Color Predictor?

They sit next to each other but answer different questions. Baby Eye Color Predictor: punnett odds for your baby's eye colour from both parents — and the grandparents, which reveal hidden recessives. Pick whichever matches what you're starting from — both are free.

Is there a tool for the next step?

Chinese Gender Predictor is the closest one after this: Use the traditional Chinese gender chart to guess boy or girl from the mother's lunar age and lunar conception month — either entered manually or derived from dates. Just for fun, not scientific.

What else is worth having open alongside it?

Aquarium Heater Wattage Calculator and Aquarium Substrate Calculator — they come up in the same task often enough to be worth a second tab.

Where do the figures come from?

Portions follow published feeding guidelines by species and weight; age equivalences use the size-dependent curves rather than a flat multiplier. None of this replaces a veterinarian, especially for an animal that is unwell.

Further reading

All guides →
ExplainerHow Big Will This Puppy Get? The Size Class DecidesThe same 12.7 kg puppy at sixteen weeks predicts a 21.9 kg adult if it is a small breed and 38.5 kg if it is a giant one. The arithmetic is trivial; the class you pick is worth seventy-six per cent.How-toThe IATA Crate Formula an Airline Measures at Check-InLength A + half B, width twice C, height D. The width rule is the one that fails people: a dog with 28 cm shoulders needs 56 cm of interior width, and no crate sold by weight rating tells you that.How-toHay by Body Weight: Flakes, Bales and a Whole WinterA 500 kg horse at maintenance eats 10 kg of hay a day — four and a third flakes, fifteen bales a month, ninety bales across a hundred-and-eighty-day winter. The activity percentage moves that by nearly half.How-toThe 80/10/5/5 Raw Ration, Worked From Body WeightA 25 kg dog at maintenance eats 625 g a day: 500 g muscle meat, 63 g edible bone, 31 g liver and 31 g other organ. The percentage you pick is worth more than every other input combined — growth is exactly double maintenance.ExplainerHow Much Chocolate Is Toxic to Dogs? Dose by Type and Body WeightCall a vet first, then read this. Toxicity depends on the theobromine dose in milligrams per kilogram of dog: dark chocolate is nearly three times worse than milk chocolate by weight, baking chocolate seven times and dry cocoa powder thirteen times. Here is the table by type and dog weight.ExplainerPet Insurance: the Answer Flips on One AssumptionOver fourteen years the same French dog costs 4,387 more insured if it stays healthy and 15,124 less if it develops a chronic condition. Every other input is arithmetic; the claim curve is the whole decision.