All pet calculators (A–Z)

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• Aquarium Filter Turnover CalculatorSee how many times per hour your pump or filter moves the whole tank volume.
• Aquarium Substrate Volume CalculatorWork out how many litres of gravel or sand you need for a layer of a chosen depth.
• Aquarium Volume CalculatorWork out your fish tank's volume in litres and gallons from its dimensions.
• Aquarium Water Change CalculatorWork out how much water to replace for the percentage change you choose.
• Aquarium Water Weight CalculatorWork out how much the water in a fish tank weighs so you can check your stand and floor.
• Cat Age CalculatorConvert your cat's age into human years and see its life stage.
• Cat Age from Birth Date CalculatorEnter your cat's birth date to see its exact age, its age in human years and its life stage.
• Cat Calorie CalculatorWork out how many calories your cat needs each day, from its weight and life stage.
• Cat Food CalculatorWork out your cat's daily calories and how to split them between wet and dry food.
• Cat Food Cans per Day CalculatorFind out how many cans of wet food your cat needs each day, week and month.
• Cat Food Cost CalculatorSee what it costs per day, month and year to feed your cat, from its calorie need and the price of the bag.
• Cat Litter Cost CalculatorSee what cat litter costs per week, month and year from the bag price and how much you use.
• Cat Pregnancy Due Date CalculatorEstimate when your cat's kittens are due.
• Cat Pregnancy Week CalculatorSee which day and week of pregnancy your cat is in, counted from the mating date, and how many days remain.
• Cat Treat Calorie CalculatorCheck how many treats your cat can have a day without unbalancing its diet: the 10% rule.
• Cost of Owning a Cat CalculatorAdd up the one-off and monthly costs of a cat to see the first-year, yearly and lifetime cost.
• Cost of Owning a Dog CalculatorAdd up the one-off and monthly costs of a dog to see the first-year, yearly and lifetime cost.
• Dog Age CalculatorConvert your dog's age into human years, taking size into account.
• Dog Age from Birth Date CalculatorEnter your dog's birth date and size to see its exact age and its age in human years.
• Dog Body Condition Score & Ideal Weight CalculatorScore your dog's body condition on the 9-point scale and estimate its ideal weight.
• Dog Calorie CalculatorSee your dog's resting energy requirement (RER) and daily maintenance energy (MER) for its life stage.
• Dog Crate Size CalculatorFind the minimum crate size for your dog from two simple measurements.
• Dog Food CalculatorFind out how many calories your dog needs each day and how many grams or cups of your dog's food that is — using the same energy formula vets use.
• Dog Food CalorieEstimate the calories in a dog or cat food from the guaranteed analysis on the label.
• Dog Food Cans per Day CalculatorFind out how many cans of wet food your dog needs each day, week and month.
• Dog Food Cost CalculatorSee what it costs per day, month and year to feed your dog, from its calorie need and the price of the bag.
• Dog Food Cups to Grams CalculatorConvert cups of dog food to grams (and back) using the energy values printed on your bag.
• Dog Harness Size CalculatorMeasure your dog correctly and read any brand's harness size chart with confidence.
• Dog Heat Cycle CalculatorPredict your dog's next season and the stages of the heat cycle.
• Dog Life Stage CalculatorFind out which AAHA life stage your dog is in and when it becomes a senior, from its age and estimated lifespan.
• Dog Overweight Percentage CalculatorSee how far above its ideal weight your dog is, in percent and in kilograms.
• Dog Pregnancy Due Date CalculatorEstimate your dog's due date and the normal whelping window.
• Dog Pregnancy Week CalculatorSee which day and week of pregnancy your dog is in, counted from the mating date, and how many days remain.
• Dog Treat Calorie CalculatorCheck how many treats your dog can have a day without unbalancing its diet — the 10% rule.
• Dog vs Cat Cost CalculatorCompare the lifetime cost of a dog and a cat from your own one-off and monthly costs.
• Dog Walking Cost CalculatorSee what a dog walker costs per week, month and year from the price per walk.
• Dog Water Intake CalculatorEstimate how much water your dog should drink in a day and check whether the amount it drinks is normal.
• Dog Weight Loss CalculatorPlan a safe weight-loss target: daily calories and how many weeks it should take.
• Dog Wet and Dry Food CalculatorSplit your dog's daily calories between wet and dry food and see the grams of each.
• Dry Matter Basis CalculatorCompare wet and dry pet foods fairly by removing the water from the label percentages.
• Horse Hay Cost CalculatorWork out how long a bale lasts and what hay costs per day, month and year.
• Horse Hay Needs CalculatorEstimate how much hay a horse eats a day as a range, from its weight and the dry-matter content of the hay, and what that means in bales and cost.
• Horse Maintenance Nutrients CalculatorSee the daily minimum energy, protein, calcium, phosphorus and vitamin A a mature horse needs for maintenance, from its weight.
• Horse Weight CalculatorEstimate your horse's weight from its heart girth and body length with a tape measure.
• Kitten Food CalculatorFind out how many calories a growing kitten needs and how much food that is.
• Lactating Mare Nutrients CalculatorSee the daily minimum energy, protein, calcium and phosphorus range a lactating mare needs, from her weight and the stage of lactation.
• Monthly Pet Budget CalculatorAdd up your monthly pet costs to see the monthly and yearly total.
• Pet Adoption vs Purchase Cost CalculatorCompare the first costs of adopting a pet and buying one, including vet care and supplies.
• Pet Annual Vet Cost CalculatorEstimate routine vet costs for a year from check-ups, vaccines, preventives, dental care and other items.
• Pet Birthday CalculatorFind your pet's next birthday, how many days away it is and how old it will turn.
• Pet Boarding Cost CalculatorAdd up the cost of boarding or pet sitting for a trip from nights, nightly rate and number of pets.
• Pet Emergency Fund CalculatorPlan how much to save each month, or how many months it takes, to build a vet-bill safety fund.
• Pet Food Bag Duration CalculatorFind out how many days a bag of pet food will last at the amount you feed.
• Pet Food Cost per Meal CalculatorFind what each meal costs from the price of the bag and the grams you feed.
• Pet Food Energy ConverterConvert pet food energy between kcal per kg, per 100 g, per pound and per ounce.
• Pet Food Price per 1,000 kcal CalculatorCompare two foods fairly by price per 1,000 calories instead of price per bag.
• Pet Food Run-Out Date CalculatorFind the date a bag of food will run out and when to reorder.
• Pet Grooming Cost CalculatorAdd up professional grooming and home supplies to see the monthly and yearly cost.
• Pet Insurance Break-Even CalculatorCompare what you pay in premiums with what a claim would repay, from your own policy numbers.
• Pet Meal Size CalculatorSplit a daily food amount into meals and see how many grams (and calories) go in each bowl.
• Pet Measurement ConverterConvert crate, collar, harness and coat measurements between centimetres and inches.
• Pet Temperature ConverterConvert aquarium, room and water temperatures between Celsius and Fahrenheit.
• Pet Travel Food CalculatorWork out how much pet food to pack for a trip, with spare days.
• Pet Treat Energy ConverterTurn kcal per 100 g and the weight of one treat into the calories in each treat.
• Pet Vaccination Due Date CalculatorWork out when a vaccination or booster is due from the last date and the interval your vet gave you.
• Pet Weight Change CalculatorTrack a weight change over time: percent change, percent per week and whether the pace is inside 1–2% a week.
• Pet Weight ConverterConvert your pet's weight between kilograms, pounds, ounces and grams.
• Pet Weight Goal Date CalculatorEstimate the date a pet could reach its goal weight at a steady weekly loss, inside the 1–2% a week range.
• Pond Liner Size CalculatorWork out the liner size for a pond from its length, width, depth and the edge overlap.
• Pond Pump Turnover CalculatorSee how often your pond pump moves the whole pond volume, in times per hour and minutes per cycle.
• Pond Volume CalculatorEstimate a garden pond's volume in litres and gallons from its length, width and average depth.
• Puppy & Kitten Age CalculatorFind your puppy's or kitten's exact age in weeks, months and days from its birth date.
• Puppy Food CalculatorCalculate how much a growing puppy needs, how many meals a day, and how much per meal.
• Raw Dog Food CalculatorEstimate how much raw food to feed each day and how to split it into muscle meat, bone and organ.