How many calories does a neutered adult Saint Bernard need?

At 149.9 lb, the verified feeding table lists 2652 kcal per day for a Saint Bernard (resting energy 1658 kcal times a factor of 1.6).

How many calories does an intact adult Saint Bernard need?

At 149.9 lb, the verified feeding table lists 2984 kcal per day for a Saint Bernard (resting energy 1658 kcal times a factor of 1.8).

How many calories does a Saint Bernard puppy under 4 months need?

At 149.9 lb, the verified feeding table lists 4973 kcal per day for a Saint Bernard (resting energy 1658 kcal times a factor of 3).

How many calories does the weight-loss row list for a Saint Bernard?

At 149.9 lb, the verified feeding table lists 1658 kcal per day for a Saint Bernard (resting energy 1658 kcal times a factor of 1).

Feeding calculator

How much to feed a Saint Bernard

A 150 lb Saint Bernard is the starting weight on this calculator, taken from the verified adult range (140–180 lb (male), 120–140 lb (female)).

Last reviewed November 1, 2026.

Saint Bernard dog — Photo: Ofrockwood · CC BY-SA 3.0 · Wikimedia Commons

Daily portion

Dog food calculator: 2388 kcal; 6.82 cups · 819 g · 2 meals
Merck chart, Adult, neutered: 2653 kcal; Resting energy 1658 kcal × 1.6, before the calculator's activity and size adjustment.

Lifespan8–10 years

Weight140–180 lb (male), 120–140 lb (female)

SizeGiant GroupWorking Group

Resting energy at that weight is about 1658 kcal per day. The Merck neutered-adult factor of 1.6 puts maintenance near 2653 kcal before activity is added. The dog food calculator on this page uses that same resting-energy formula, then applies the activity and size adjustments from the main dog food calculator.

Reading the portions

Compared with other single-size giant breeds, that neutered-adult portion is 464 kcal higher than the 2189 kcal for an average giant breed at 116 lb.

Portions are a starting estimate. Saint Bernard individuals can vary by body condition, neuter status, and how much they work. Adjust the bowl from what you see on the ribs, not from the table alone.

Feeding table from the verified weight chart

RER=70*kg^0.75; MER=RER*factor. Starting estimate only; individuals vary up to 50%; adjust by body condition

Saint Bernard adults maintenance energy

Swipe sideways to read every column.

Weight	RER	Adult, neutered	Adult, intact	Puppy under 4 months	Puppy 4 months and older	Weight loss
119.9 lb (54.4 kg)	1402 kcal	2243 kcal	2524 kcal	4206 kcal	2804 kcal	1402 kcal
134.9 lb (61.2 kg)	1532 kcal	2451 kcal	2757 kcal	4595 kcal	3063 kcal	1532 kcal
149.9 lb (68 kg)Current weight	1658 kcal	2652 kcal	2984 kcal	4973 kcal	3315 kcal	1658 kcal
164.9 lb (74.8 kg)	1780 kcal	2849 kcal	3205 kcal	5341 kcal	3561 kcal	1780 kcal
179.9 lb (81.6 kg)	1900 kcal	3041 kcal	3421 kcal	5701 kcal	3801 kcal	1900 kcal

The highlighted row follows the weight in the calculator above.

Frequently asked

Questions from the breed record

Use the verified adult weight for a Saint Bernard: 140–180 lb (male), 120–140 lb (female). This page starts the calculator at 150 lb.

Sources

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