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Calories

ID#:
Pet:
Owner:
Age:
Procedure:
Species:
Sex:
Lbs
Kgs
1 Set Weight in Lbs or Kgs
lbs
kgs
2 Set Body Condition Score

*Results for MER, Maintenance Energy Requirement, are ESTIMATES, individual animals can vary by as much as 50% from the predicted values.

  • Enter Pet's Weight
  • Select BCS
  • Ideal target weight is calculated
  • Select Pet criteria
  • Calories/Day to feed is calculated
  • Enter the calories per cup/can of food
  • Number of cups/cans to feed/day is calculated
  • See Pet Diet Tables for calorie amounts
3 Choose Species
  • canine
  • feline
Canine
4 Select Pet Criteria:
Dog's Target Weight:
RER Resting Energy Requirement

Calculated - kcal/day
MER Maintenance Energy Requirement
Range: - kcal/day

Calculated - kcal/day
Daily H2O Requirement

Calculated Value (Range)
5 Set Calories per can or cup
Use Pet Food Diet Tables Below
Enter Calories/Cup or Can
Cups or Cans to Feed per Day:
Feline
2 Select Pet Criteria:
Cat's Target Weight:
RER Resting Energy Requirement

Calculated - kcal/day
MER Maintenance Energy Requirement
Range: - kcal/day

Calculated - kcal/day
Daily H2O Requirement

Calculated Value (Range)
3 Set Calories per can or cup
Use Pet Food Diet Tables Below
Enter Calories/Cup or Can
Cups or Cans to Feed per Day:

Pet Food Diet Tables Links - Calories/Cup or Can

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Feline BCS

Vetcalculators.com © 2021 Mike Sozanski DVM ABVP

Canine BCS

Vetcalculators.com © 2021 Mike Sozanski DVM ABVP

Feline Calorie Chart

Vetcalculators.com © 2021 Mike Sozanski DVM, Dip ABVP

Canine Calorie Chart

Vetcalculators.com © 2021 Mike Sozanski DVM, Dip ABVP

Calories

Even when taking into account a pet’s lifestyle, age, activity level, etc., it is impossible to mathematically determine exactly how many kilocalories a pet needs. Variations in metabolic rates can alter this figure by as much as 20 percent. Results need to be viewed as an estimate only.

Calorie “calculators” or tables cannot take into account what might make an animal’s situation unique.

  • Resting Energy Requirement (RER) = 70 (body weight in kg)^0.75
  • Maintenance Energy Requirement (MER) = appropriate multiplier x RER

Commonly Used Multipliers:

typical neutered pet 1.6
typical intact pet 1.8
weight loss 1
weight gain 1.7
light work 2
moderate work 3
heavy work 6
growth (less than 4 months old) 3
growth (more than 4 months old) 2

Here's what the calculations look like for a neutered pet dog weighing 45 pounds that is at his or her optimum weight.

  • 20.5 kg
  • 70 x 20.5^0.75 = 674 kcal/day
  • 1.6 x 672 = 1075 kcal/day

Remember, this is estimate. This pet’s actual needs may actually be anywhere between 860 kcal/day and 1,290 kcal/day.

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