How much should a Saint Bernard eat?
Adult weight range 54–82 kg · adult feeding factors apply from 18–24 months of age · raw rate 2.0% of body weight. Portions below are computed with the same veterinary formula as the main calculator — not copied from a bag chart.
Enter your dog's details
Pre-filled with the breed's mid-range weight — adjust to your dog.
Saint Bernard portions by weight
| Adult weight | RER | Daily target | Kibble / day | Cups / day | Per meal (×2) | Raw / day |
|---|---|---|---|---|---|---|
| 54.0 kg | 1,394 kcal | 2,231 kcal | 543 g | 5.4 | 271 g | 1,080 g |
| 68.0 kg | 1,658 kcal | 2,652 kcal | 645 g | 6.5 | 323 g | 1,360 g |
| 82.0 kg | 1,907 kcal | 3,052 kcal | 742 g | 7.4 | 371 g | 1,640 g |
Neutered adult (×1.6), kibble at 370 kcal/100 g, 10% treat allowance removed. Raw at 2.0% of body weight (size-correct rate). Cups ≈ grams ÷ 100 (typical kibble — weigh in grams for accuracy).
Worked example: a 68.0 kg Saint Bernard
A 68.0 kg adult Saint Bernard (neutered): RER 1,658 × 1.6 = 2,652 kcal − 265 kcal treats ÷ 3.7 kcal/g = 645 g — that is 323 g per meal, twice a day. The same arithmetic runs in the calculator above: change the weight or the life stage and every number follows.
Saint Bernard puppy feeding by age
| Age | Factor | Meals / day | Note |
|---|---|---|---|
| Under 4 months | ×3.0 | 3–4 | On current weight — weigh every 2 weeks |
| 4–8 months | ×3.0 → ×2.0 (taper) | 3–4 | Factor falls smoothly — weigh every 2 weeks |
| 8–12 months | ×2.0 | 3 | 3 meals; 2–3 from 6 months |
| 12 months to adult | ×1.6–1.8 | 2 | Adult factor from 18–24 months |
Factors multiply RER on the puppy's current weight, not adult weight. Large and giant breeds keep the growth factors until 18–24 months.
Feeding notes for the Saint Bernard
For a sedentary giant, the inactive factor is not a diet — it is maintenance. Giants hide fat under heavy coats and loose skin; judge condition by ribs and waist, never by appetite or the empty bowl.
What makes feeding a Saint Bernard different: Saint Bernards are giants with the longest growth window and a real bloat risk: keep puppies lean, split adult meals, and rest after eating. Monthly weigh-ins matter — a few kilos hide easily under that coat.
Health, treats and the senior years: Saint Bernards are prone to heart disease, and extra weight makes a struggling heart work harder — keeping one lean is the single most useful feeding decision. In old age, watch the appetite and the energy: a Saint that tires easily or goes off food is a vet visit, not a portion change.
Training, treats and everyday feeding: Saint Bernards do best on two or three smaller meals a day rather than one large one — a deep-chested giant should never eat a big meal and then exercise. A slow-feeder bowl is worth more than a raised bowl, and puppies should never be fed for size: lean growth on the puppy factors is the whole game.
Weight & condition for the Saint Bernard: Saint Bernards are giants with the longest growth window and a real bloat risk: keep puppies lean, split adult meals, and rest after eating. Monthly weigh-ins matter — a few kilos hide easily under that coat, and every extra kilo is carried by joints built for a shorter life than most.
Body condition check: Weigh the dog, then look at the dog: the 9-point body condition scale wants a 4–5, with ribs felt rather than seen, a waist that narrows behind the ribs, and a belly that tucks up from the side. If the ribs have vanished under fat, cut the table portion by 10%; if they show clearly, add 10%.
Puppies of this size class reach adult factors at about 18–24 months; until then, growth portions follow the puppy factors (×3.0 under 4 months, tapering to ×2.0 by 8 months) on current weight, recalculated every two weeks. Individual dogs vary by up to ±50% from any formula — the scale and your hands on the ribs outrank this table.
Guides: feeding a senior dog · feeding schedules by age
Sources: method & factors · AAHA 2021 guidelines · Pet Nutrition Alliance RER/MER · AKC breed profile
Portions by brand — Saint Bernard
What that is on 5 popular brands, for a 68 kg adult (neutered, treats removed):
How to use this calculator
Enter weight
Enter the dog's weight (use ideal weight for weight loss).
Select life stage and goal
Select the life stage and goal so the correct MER factor applies.
Enter food energy density
Enter the food's energy density (kcal per 100 g) from its label.
Read the daily portion
Read the daily portion in grams, split it across meals, and adjust by 10% every 2 weeks based on body condition.
Saint Bernard feeding questions
How much food should a Saint Bernard eat per day?
Across the full adult weight range (54–82 kg), a Saint Bernard needs about 2,231–3,052 kcal/day — 543–742 g of typical kibble (370 kcal/100 g) after the 10% treat allowance is removed — depending on weight, sex and activity. A typical adult at the middle of the range (68.0 kg) needs about 2,652 kcal/day, roughly 645 g, split over 2 meals.
How many meals a day should a Saint Bernard eat?
Two or three smaller meals a day is right for a Saint Bernard — split the daily 645 g (2,652 kcal) for a 68.0 kg adult across them, never served as one big bowl. A deep-chested giant should never eat a large meal and then exercise, and a slow feeder is worth more than a raised bowl. Puppies should never be fed 'to grow' — lean growth on the puppy factors is the whole game.
How many cups of food does a Saint Bernard need per day?
About 645 g/day is roughly 6.5 cups at the typical density of 100 g per cup — but cups vary by up to 40% between kibbles, so weigh the grams once and the question disappears. A cup is a volume; grams are the portion. At 645 g a day, a 10% scooping error is about 65 g — a small dog's entire meal — so weighing matters more, not less, as portions grow.
How do I switch a Saint Bernard to a new food?
Over 10–14 days for a giant breed: 25% new food for 3 days, 50% for 3–4 days, 75% for 3–4 days, then 100% — keeping the total daily grams at the number on this page throughout. Giant breeds do best with gradual changes and smaller, more frequent meals; if stools loosen, hold at the current mix for an extra two days before moving on.
How much should a Saint Bernard puppy eat?
Giant puppies are the longest, most delicate growth project: adult factors only at 18–24 months. Use ×3.0 under 4 months, tapering to ×2.0 by 8 months, on current weight, keep them visibly lean, and never 'feed for size' — genetics sets the size, calories only set the fat.
How much raw food does a Saint Bernard need?
At the size-correct BARF rate of 2.0% of ideal body weight, a 68.0 kg Saint Bernard eats about 1,360 g of raw food per day — split 70% muscle meat, 10% raw edible bone, 5% liver, 5% other organ, 10% vegetables and fruit on the BARF model.
How does feeding a Saint Bernard change as they age?
From about 18–24 months a Saint Bernard counts as fully adult; the senior shift usually arrives years later, when activity and muscle mass fall. The calculator's senior factor (×1.4 instead of ×1.6) trims a 68.0 kg Saint Bernard from 2,652 to about 2,321 kcal/day — roughly 564 g of typical kibble. Make the change gradually and judge by body condition, not birthdays alone: a still-active older Saint Bernard may hold condition on the adult number.
Should I feed my Saint Bernard puppy for size?
No — never feed for size. Genetics sets the size; calories only set the fat, and fast growth is the enemy of a giant breed's joints. A Saint Bernard puppy's portion is calculated on its current weight with the puppy factors, kept visibly lean — the adult number for a 68.0 kg dog is about 2,652 kcal/day, and the puppy should reach it on schedule, not early. Adult factors only apply from about 18–24 months.
How much does a Saint Bernard eat per month?
A 68.0 kg adult at 645 g/day eats about 19.4 kg of kibble a month — useful when buying in bulk. The bag's feeding guide covers the whole breed range; the number on this page is the one matched to your dog's actual weight. And because the breed is deep-chested, split that daily 645 g into two meals with rest after eating.
Related calculators
Raw & BARF Calculator
Daily raw grams split into meat, bone, liver, organ and veg. BARF and PMR models.
Puppy Food Calculator
Growth portions by age in weeks and months, kibble or raw.
Dog Weight Loss Calculator
Safe deficit portions at target-weight RER, with a realistic timeline.