Pets and backyard animals
How long a bag of dog food lasts, hay for a horse by body weight, and what backyard eggs really cost, from your own feed, prices and animals.
Egg Cost Calculator
What your backyard eggs cost in feed: the cost per egg and per dozen from your flock, its feed and the eggs you collect.
Dog Food Bag Calculator
How long a bag of dog food lasts, how many cups are in it, and what feeding costs a day, a month and a year.
Horse Hay Calculator
How much hay a horse eats a day and how many bales to buy for the winter or any number of days, with storage and feeding waste allowed for.
Keeping animals is a steady run of small sums: how long a bag lasts, how many bales to buy before winter, whether the hens pay for their feed. The pages here work those sums from figures you read off the bag, the scale or your own records, such as grams per cup, a horse's weight, a lay rate and a feed price. They do not tell you how much an animal should eat. Feeding needs depend on the animal's age, condition, work and health, and that judgement belongs to the feed label, your vet or an extension service. Where a page offers a starting figure, such as hay at a percentage of body weight, it names the source and lets you change it. Costs are arithmetic on the prices you enter; the site stores no feed or egg prices.