Pet Food Cost by Weight Calculator
Example: Pet body weight: 50 lb · Cups fed per day per 10 lb of body weight: 0.5 · Cups per bag: 120 · Price per bag: 55 $
| Daily food cost | $1 |
| Monthly food cost | $34 |
| Annual food cost | $418 |
| Days a bag lasts | 48 |
Worked example
A 50-pound dog fed 0.5 cups per day per 10 pounds eats about 2.5 cups a day. From a 120-cup bag costing $55, that is roughly $0.46 of food per cup, so about $1.15 a day, $34 a month, and $418 a year — and each bag lasts about 48 days. Doubling the bag''s per-cup price would double every one of those numbers, which is why cost-per-day beats sticker price when comparing foods.
Frequently asked questions
How do I find the right cups-per-10-pound number?
Check the feeding guide printed on your food''s bag, which lists a daily amount by weight range, then convert it to cups per 10 pounds of body weight. Guides are starting points; active dogs, puppies, and pregnant animals eat more, while seniors and less active pets often eat less.
Why compare cost per day instead of bag price?
A cheaper bag can cost more per day if it is less calorie-dense and your pet needs more cups, while a pricier premium food may last longer per bag. Converting everything to cost per day, as this tool does, is the only fair way to compare foods.
Does this work for wet food?
The structure works if you express the wet food in comparable units — for example, cans per day and cost per can instead of cups and bags. Because wet food is mostly water, its cost per calorie is usually higher, so many owners feed it as a topper rather than the whole diet.
How can I lower food costs without hurting nutrition?
Buy the right bag size to reduce cost per cup, avoid overfeeding by measuring portions to your pet''s ideal weight, and watch for genuine sales on a food your pet already does well on. Switching foods purely for price can upset digestion, so change gradually.