Pets

How many days will my dog food last?

Add different daily portions for each dog to estimate when the remaining dry food runs out and when to reorder.

Formula version 2.0.0 · Last reviewed 2026-08-30

Preparing the calculator.

Calculator inputs and results

Dry food

Uses remaining mass and actual daily portions.

Daily portion for each pet
g

This does not recommend a portion. Enter the amount from your plan or product guidance.

Cost, delivery and allowance

Estimate

about 16 days 16hremaining

about 16 days 16h
Estimated run-out
Safe order date
Monthly need
5,478.75 g
Monthly consumption cost
₩76,703
Actual annual purchase cost
₩924,000

Formula and assumptions

The result is stock duration if each dog's current amount continues. For ordering, subtract delivery lead time from the earlier high-use run-out date.

Add every dog's daily portion for total daily feeding. Account for food removed from stock as waste, then divide total food grams by daily grams consumed from stock.

Why the result can vary

Growth, activity, weight-management changes, switching food, treat share, scoop error, and spills alter the rate stock falls.

Example

Order food for two dogs

Inputs: 10kg food, first dog 300g/day, second dog 200g/day

Outcome: At 500g total a day, that is about 20 days before accounting for waste.

Cautions

  • This calculator does not prescribe an appropriate portion or weight-management plan.
  • Use product guidance and the dog's health needs; consult a veterinarian when changing a feeding plan.

Frequently asked questions

Can the dogs have different serving sizes?

Yes. Enter daily grams separately for each dog and the calculator uses their sum.

Will it recommend a portion from body weight alone?

No. Calorie density and each dog's needs differ, so it does not invent a serving. Enter an amount from the label or veterinarian.

Can I use this for wet dog food?

The duration formula works when stock and daily use share a mass unit, but opened-product storage limits must be checked separately.