How Much to Feed a Boston Terrier
The dapper Boston Terrier does best on small, consistent meals that protect its sensitive digestion. Using the veterinary RER/MER formula, an adult Boston Terrier of about 18 lbs needs roughly 541 kcal per day — around 142 g (1.4 cups) of typical dry food. The calculator below is pre-set for the Boston Terrier: adjust the weight, life stage and food type to match your dog.
Boston Terrier portion calculator
Veterinary RER/MER formula — daily calories, grams and cups.
RER 338 kcal × 1.6 (adult, neutered/spayed) = 541 kcal, at 380 kcal/100g. Estimates for healthy pets — always confirm with your veterinarian.
Small breeds such as the Boston Terrier sit in an awkward spot: big enough to beg convincingly, small enough that leftovers wreck their calorie budget. At a typical 18 lbs, the full daily allowance is roughly 541 kcal — about 1.4 cups of standard kibble. Split it into 2 meals and re-weigh your dog every couple of months, because a single pound of drift is a big percentage change at this size.
The Boston Terrier typically weighs around 18 lbs (8.2 kg) as a healthy adult. That small body has an RER of 338 kcal; applying the adult, neutered/spayed multiplier of 1.6 gives 541 kcal per day, or about 142 g of dry food. At these quantities a proper gram scale beats measuring cups — cup-level errors of “just a little extra” compound into pounds over a season.
These numbers are a starting point, not a prescription. The calculator supports every life stage (puppy, puppy, adult, neutered/spayed, adult, intact, active / working, senior, weight loss plan) — a puppy can need two to three times the adult allowance, while a senior or a dog on a weight-loss plan needs noticeably less. Recheck the numbers after any change in weight, activity, food brand or neutering status, and always transition between foods gradually over 7–10 days. For medical conditions, pregnancy or lactation, follow your veterinarian's feeding plan instead.
Frequently asked questions
How much food should a Boston Terrier eat per day?
A typical adult Boston Terrier weighing 18 lbs needs about 541 kcal per day (adult, neutered/spayed), which is roughly 142 grams — about 1.4 cups — of standard dry food, split into 2 meals.
How is the Boston Terrier's daily portion calculated?
We use the standard veterinary formula: Resting Energy Requirement (RER) = 70 × (weight in kg)^0.75, then multiply by a life-stage factor. For a 8.2 kg Boston Terrier, RER is 338 kcal, and the adult, neutered/spayed factor of 1.6 gives 541 kcal per day.
How many times a day should I feed my Boston Terrier?
2 meals per day is the standard recommendation for a adult, neutered/spayed dog — about 270 kcal (71 g of dry food) per meal. Puppies and kittens need 3–4 smaller meals instead.
My Boston Terrier seems hungry after meals — should I feed more?
Begging is not a reliable hunger signal, especially in food-motivated breeds. Judge by body condition instead: you should feel ribs easily under a thin fat layer. If your Boston Terrier is truly losing weight at 541 kcal per day, increase portions by ~10% and re-weigh in two weeks.