Calculators
Two tools, both built on published veterinary research rather than a rule of thumb, and both showing you where the numbers came from and how far they can be trusted.
Puppy size calculator
Predict a puppy’s adult weight and height from its current weight, age and breed, on a growth curve whose shape changes with how big the dog will end up.
Dog calorie calculator
Work out an adult dog’s daily calories from every published method at once. The sources disagree, and they do not disagree along the same axis, so all of them are shown rather than blended into one number.
What makes these different
Most pet calculators apply one rule to every dog and never say where it came from. These are calibrated against published data, cover 268 breeds including designer crosses, and say plainly when an estimate should not be trusted. Where the published sources contradict each other, we show the disagreement instead of picking a winner quietly. See the methodology.