Pets & Animals
Calculators for pet owners: dog and cat age in human years, daily calories and food portions, aquarium volume and stocking, and other everyday care questions. They give general guidance; check medication doses and diets with your vet.
34 tools
- Pet Age Calculator Convert your dog or cat's age to its approximate human-year equivalent.
- Aquarium Volume Calculator Calculate aquarium volume in liters and gallons.
- Chicken Feed Calculator Calculate daily, weekly, and monthly chicken feed for a flock of laying hens.
- Dog Water Intake Calculator Calculate how much water your dog should drink per day based on its body weight.
- Pond Volume Calculator Estimates a pond's water volume from its length, width, average depth and shape, in cubic metres, liters and US gallons.
- Aquarium Stocking Density Calculator Uses the inch-of-fish-per-gallon rule to estimate how many inches of fish your aquarium can support and how much capacity remains.
- Kitten Feeding Amount Calculator Estimate a kitten’s daily energy requirement from its weight and a per-kilogram calorie figure to guide feeding.
- Fish Tank Stocking Calculator Calculate your aquarium volume and how much fish it can hold using the inch-per-gallon guideline.
- Aquarium Salt Dose Calculator Works out how many grams (and tablespoons) of aquarium salt to add based on your water volume and the chosen dose per liter.
- Hamster Cage Space Calculator Calculates the minimum unbroken floor area a hamster cage needs based on species and number of hamsters.
- Horse Bedding Calculator Estimate how many bags of shavings bedding you need for a horse stall from the floor area and bedding depth.
- Aquarium Water Change Calculator Calculates the volume of water to remove for a partial water change, in gallons and liters, plus what stays in the tank.
- Dog Age (Epigenetic Formula) Calculator Convert dog age to human years with the scientific epigenetic formula 16·ln(age)+31.
- Horse Age in Human Years Calculator Convert your horse’s age to equivalent human years.
- Pet Travel Crate Airline Calculator Find the IATA-compliant airline crate size for your pet from its length, leg, shoulder and standing height.
- APGAR Pet Score Calculator Sums the five adapted APGAR signs into a 0-10 neonatal vitality score for puppies and kittens; for education only, not veterinary advice.
- Aquarium Chiller Sizing Calculator Work out the chiller capacity in BTU/hr needed to cool your aquarium by a given temperature drop.
- Aquarium Heater Wattage Estimate the aquarium heater wattage from tank volume.
- Aquarium Stocking Level Calculator Estimate how many inches of fish your tank can safely hold using the inch-per-gallon rule.
- Bird Cage Size Calculator Find the minimum cage width, depth and height your birds need based on their wingspan and how many you keep.
- Cat Calorie Needs Estimate a cat's daily energy needs (RER × life-stage factor).
- Chicken Coop Size Calculator Work out the coop area, run area, roost bar length and nesting boxes your flock needs.
- Dog Calorie Needs Estimate a dog's daily energy needs (RER × life-stage factor).
- Dog Food Portion Calculator Works out how many grams of food a dog needs per day from its weight, life stage and activity level.
- Dog Grape Toxicity Calculator Compares the grams of grapes or raisins a dog ate against the guideline concern threshold (≈0.7 g/kg for grapes, 0.1 g/kg for raisins) to gauge ingestion risk.
- Horse Feed Ration Calculator Calculate a horse's daily forage and concentrate from bodyweight, intake rate and workload.
- Horse Weight from Girth Estimate a horse's weight from heart girth and body length.
- Horse Weight Tape Calculator Estimates an adult horse's weight from heart-girth and body-length measurements using the standard weight-tape formula.
- Kitten Calorie Needs Calculator Estimates the daily calories a growing kitten needs from its weight and age, plus the food amount in grams.
- Litter Box Count Calculator Work out how many litter boxes your household needs using the vet-recommended one-per-cat-plus-one rule.
- Pet Resting Energy (RER) Calculate a pet's resting energy requirement from weight.
- Pet Water Intake Calculator Estimate a pet's daily water intake from body weight.
- Puppy Adult Weight Predictor Predict how much your puppy will weigh as a fully grown adult dog from its current age and weight.
- Rabbit Age in Human Years Calculator Convert your rabbit’s age to equivalent human years.