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Dog weight management · Free tool

Dog food portion & cost calculator

Use the daily calorie total agreed with your vet to calculate grams per meal, cost per day and how long a bag lasts. Treats come out of that total. Bring the printable summary to your next weight check.

The total includes meals and extras. Count chews, table scraps and food used for medication. Ask your vet for a daily target if you don't have one.

Find “Calorie content” on the bag. Enter kcal per kilogram, not kcal per cup. This tool assumes one main food.

Use your actual price, including any delivery cost or discount you want counted. Treat costs are excluded.

From the bag to the bowl

What does your daily portion cost?

Enter the total calories agreed with your vet, your food label and your bag price. Your portion and cost summary will appear here.

Free, with no email required. Calculations run in your browser.

How are the portions and costs calculated?

Daily food calories = your total minus treats and extras. Grams per day = food calories × 1,000 ÷ the label's kcal/kg. Bag weight ÷ daily grams gives days per bag; price ÷ days gives daily cost. For example, a 500 kcal total with 50 kcal of treats and a 3,000 kcal/kg food gives 150 g/day. A 10 kg bag costing $60 lasts about 66.7 days and costs $0.90/day.

This is portion arithmetic for one main food. It does not calculate the calorie target. AAHA recommends an individualized plan with your veterinary team, and treats should supply no more than 10% of the daily total.

Which food labels are included?

The following US adult dry formulas have manufacturer calorie values checked on September 10, 2026. They require veterinary authorization. The list is alphabetical, and inclusion is not a recommendation for your dog.

For Hill's Metabolic, Purina Select Blend, small-dog variants or any other formula, use the kcal/kg on your own bag. Recipes vary by country and can change. Calories per cup depend on how much kibble fits in a cup; compare calories per kilogram when comparing energy per mass.

What should I confirm with my vet?

Confirm the total daily calories, food choice, treat allowance and timing of the next weight check. The AAHA 10% treat limit is a ceiling, not a daily target. Medical conditions and therapeutic diets can require tighter restrictions. Do not use an adult weight-loss plan for a growing, pregnant or nursing dog without veterinary direction.

Start with our prescription weight-management food comparison or dog body condition tool if you are preparing for that conversation.