
Dog RER calculator: Calculate Your Dog’s Resting Energy
What Is a Dog RER Calculator? A Dog RER calculator estimates a dog’s Resting Energy Requirement (RER)—the approximate number of calories a dog needs per day to support basic energy requirements while at rest. RER is commonly expressed in kilocalories per day (kcal/day). For the standard calculation, you need your dog’s body weight in kilograms. The commonly used formula is: RER = 70 × (body weight in kg)^0.75 For example, a 10 kg dog has an estimated RER of about 394 kcal/day. This number represents a resting energy estimate; it should not automatically be treated as the amount of food the dog needs each day. What RER Means for Dogs Dog RER Calculator stands for Resting Energy Requirement. It provides a baseline estimate of energy expenditure and is used in veterinary nutrition as a starting point for determining energy needs. Because RER is based primarily on body weight, it does not fully account for every factor that influences a dog’s actual daily calorie requirement. Life stage, activity, reproductive status, body condition, health status, and other circumstances can affect energy needs.













