Nutrition & Energy Animal Calculators
Caloric requirements (MER/RER), daily feed amounts, dry matter intake (DMI), digestible energy, and ration planning.
Feeding your animals the right amount of food is one of the best ways to keep them happy, healthy, and full of energy. Whether you have an energetic puppy, an indoor cat snoozing on the couch, or a barn full of horses and cattle, every animal has unique daily calorie needs. Smaller pets like cats and little dogs actually burn through energy much faster for their body size than big animals like horses. At the same time, growing babies, nursing mothers, and hardworking animals need extra fuel to stay strong. Our nutrition calculators take the guesswork out of mealtime by calculating your pet’s baseline resting calories (the energy they burn just breathing and sleeping) and adjusting for their daily activity, age, and lifestyle so you can serve the perfect portion size every day.
Available Nutrition & Energy Tools20 Calculators
Dog Calorie Calculator
Calculates the Resting Energy Requirement (RER) and Maintenance Energy Requirement (MER) for adult dogs and growing puppies using official National Research Council (NRC) equations.
Dog Resting Energy Requirement (RER) Calculator
Calculates the baseline calories your dog burns each day simply resting, breathing, and digesting food.
Dog Weight Loss Calorie Calculator
Calculates the recommended daily caloric target and projected timeline for safe dog weight loss without muscle wasting.
Dog Daily Water Requirement Calculator
Calculates baseline daily fluid turnover in ml, cups, and ounces for healthy adult dogs and active canines.
Dog Food & Daily Feeding Portion Calculator
Converts your dog's daily caloric requirements into exact daily feeding portions in cups, wet food cans, and grams, with meal splitting and monthly budget estimation.
Dog Raw Food & BARF Diet Calculator
Computes daily and weekly biologically appropriate raw food (BARF) portions with precision breakdowns for muscle meat, raw edible bone, liver, and secreting organs.
Dog Food Transition Schedule Calculator
Calculates custom day-by-day mixing portions (old food vs. new food) and feeding timelines to safely transition dogs to a new diet without digestive distress.
Dog Treat Calorie & Daily Portion Limit Calculator
Calculates your dog's safe daily treat calorie allowance using the veterinary 10% rule, and computes maximum daily quantities for popular dog treats.
Cat Calorie Calculator
Computes resting energy (RER) and daily maintenance energy (MER) for cats and kittens based on weight, neuter status, and activity.
Kitten Calorie & Growth Requirement Calculator
Computes accelerated growth energy requirements for young kittens and adolescent felines.
Cat Daily Water Intake Calculator
Calculates daily cat fluid turnover and accounts for moisture offset from canned wet food.
Cat Food & Wet Food Portion Calculator
Calculates exact daily wet food cans, 85g pouches, and dry kibble cups or grams based on your cat's body weight, neuter status, and preferred wet/dry feeding ratio.
Cat Mixed Feeding (Wet & Dry Food) Calculator
Calculate balanced daily portions of wet food and dry kibble based on your cat's caloric requirement, body weight, and desired wet-to-dry ratio.
Cat Raw Food & BARF Diet Calculator
Computes daily raw feeding portions in grams and ounces for cats and kittens based on Prey Model Raw (PMR) and BARF guidelines (80–84% muscle meat, 6–10% edible bone, 5% liver, 5% other secreting organ).
Horse Digestible Energy (DE / Calorie) Calculator
Computes daily digestible energy requirements in Megacalories (Mcal/day) for horses across all workloads from maintenance to heavy work.
Horse Daily Forage & Feed Intake Calculator
Calculates the recommended daily dry forage allocation and grain partitions to prevent colic and gastric ulcers.
Horse Concentrate & Grain Feed Calculator
Calculate balanced daily forage and grain concentrate portions based on your horse's body weight and activity level per NRC equine nutrition guidelines.
Bird Basal Metabolic Rate (BMR & Energy) Calculator
Computes daily resting and active calories for pet birds, parrots, and songbirds based on weight in grams.
Pet Food Dry Matter & Carbohydrate Calculator
Convert guaranteed analysis pet food labels into true dry matter basis (DMB) and calculate hidden carbohydrates (NFE) to compare canned, raw, and dry kibble diets accurately.
Horse Hay & Winter Forage Requirement Calculator
Calculates the daily hay requirement, cold-weather thermoregulatory deficit, and seasonal bale tonnage required for horses.
Frequently Asked Questions: Nutrition & Energy
Why do smaller animals burn energy faster than bigger ones?
Smaller animals lose body heat much more quickly than big animals because they have more skin surface area relative to their weight. That is why a 10-pound cat or tiny terrier needs far more calories per pound of body weight than a 1,000-pound horse.
What is the difference between resting calories (RER) and daily calories (MER)?
Resting calories (RER) is the baseline energy your dog or cat burns just resting on the sofa. Daily calories (MER) adds the extra energy they need for walking, playing, staying warm, and digesting food.