Pets & Animals — Calcly

🐟 Aquarium Litre Calculator Calculate your aquarium volume in litres from length, width and height – gross and net 🐟 Aquarium Volume Calculator Calculate volume for different aquarium shapes – rectangular, round/cylinder or bow-front 🐕 Dog Pregnancy Calculator – When Will My Dog Give Birth Calculate when your dog is expected to give birth based on the mating day 🐱 Cat Pregnancy Calculator Calculate your cat's expected birth date based on the mating day 🐾 Animal Years to Human Years Calculate your pet's age in human years based on animal type and age 🐟 Filter Capacity Calculator Calculate the recommended filter capacity for your aquarium based on volume, fish count and plants 🐟 How Many Fish in Aquarium Calculate how many fish your aquarium can hold based on volume and fish size 🍖 Pet Food Calculator Calculate how much food your pet needs daily and weekly based on animal type, weight and activity level 🐴 Horse BMI Calculator Calculate your horse's body condition index based on weight and wither height and assess if the horse is under-, normal- or overweight 🐴 Horse Feed Calculator Calculate daily feed requirements for your horse based on weight, activity level and type 🐴 Horse Weight Calculator Calculate your horse's estimated weight from heart girth and body length using the Carroll & Huntington formula 🐴 Horse Water Needs Calculate your horse's daily water needs based on weight, activity level and temperature 🐕 Dog BMI Calculator Calculate your dog's FBMI score and find out if it is over- or underweight 🐕 Dog Food Calculator Calculate how much food your dog needs daily based on weight, activity level and age 🐕 Dog Ideal Weight Find your dog's ideal weight based on breed and gender 🐕 Dog Water Needs – How Much Water Does My Dog Need Calculate how much water your dog should drink daily based on weight, activity and weather 🐕 When Is My Dog Fully Grown – Dog Maturity Calculator Calculate when your dog will be fully grown based on its size and current age 🐕 Dog Years to Human Years Calculate your dog's age in human years based on age and breed size 🐶 Puppy Growth Calculator – Is My Puppy Growing Normally Calculate if your puppy's weight is normal for its age compared to expected adult weight 🔥 Pet Calorie Needs Calculator Calculate how many calories your pet needs daily based on animal type, weight and activity level 🐴 Horse Calorie Needs Calculate your horse's daily energy needs in Mcal and MJ based on weight and activity level 🐕 Dog Calorie Calculator Calculate your dog's daily calorie needs based on weight, activity level and neutering status 🐱 Cat Calorie Needs Calculate your cat's daily calorie needs based on weight, activity and neutering status 🐱 Cat BMI Calculator Calculate your cat's body condition score based on weight and measurements 🐱 Cat Food Calculator Calculate how much food your cat needs daily based on weight, activity and age 🐱 Cat Ideal Weight Find your cat's ideal weight based on breed and sex 🐱 Cat Weight vs Age See your cat's expected weight based on age and breed 🐱 Cat Years to Human Years Calculate your cat's age in human years based on the latest research 🐱 Kitten Growth Calculator Check if your kitten is growing as expected based on age and weight 💊 Pet Medicine Dosage Calculator Calculate the correct medicine dosage for your pet based on weight, dose per kg and treatment plan 🐴 Riding Height Calculator Find the right horse size based on rider height and weight – recommended wither height and horse weight 🐟 Water Change Calculator Calculate how often and how much water to change in your aquarium based on volume, fish count and plants

Calculators for pets and animals

Our animal calculators help you take the best possible care of your pet. Whether you have a dog, cat, horse or aquarium, you can calculate everything from food and calories to age and ideal weight.

Dog

Find out your dog's age in human years, calculate the right food requirements, and check if your dog has a healthy weight. Our dog calculators cover everything from puppies to adult dogs, including pregnancy calculator and water needs.

Cat

Calculate your cat's age, ideal weight and food requirements. Our cat calculators help you keep your cat healthy and in good shape, whether it's a kitten or an adult cat.

Horse

Calculate your horse's weight, feed requirements and calorie needs. Find the right riding height and check if your horse has a healthy weight with our horse calculators.

Aquarium

Calculate your aquarium's volume in litres, find out how many fish you can have, and plan water changes and filter capacity with our aquarium calculators.

Frequently Asked Questions

How do you calculate dog years to human years?

The old rule of multiplying by 7 is not quite accurate. A more precise method accounts for the fact that dogs age faster in their first years. The first dog year equals approximately 15 human years, the second about 9 years, and then about 4-5 human years per dog year. Small breeds generally live longer than large breeds.

How much food should my dog have per day?

A dog's daily food requirement depends on weight, age, activity level and the calorie content of the food. As a rule of thumb, an adult dog needs about 2-3% of its body weight in food daily. An active 25 kg dog typically needs about 350-500 grams of dry food per day. Puppies need more food relative to their weight than adult dogs.

How many fish can I have in my aquarium?

A common rule of thumb is 1 cm of fish per litre of water, but it depends on the fish species, filtration and maintenance. Tropical freshwater fish typically need more space than the rule suggests. A 100-litre aquarium can hold about 15-20 small fish such as neon tetras. Remember to consider the adult size of fish, not their size at purchase.

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