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Dog food portion calculator

Estimate a daily dry-food portion for your dog from its weight and activity.

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The Dog food portion calculator turns Dog weight (kg), Activity level into Daily dry food (g), instantly and for free. For instance, with Dog weight (kg) = 20 and Activity level = Low / senior it returns Daily dry food (g) = 400.

How to use it

  1. Enter your values: Dog weight (kg), Activity level.
  2. Read the result instantly: Daily dry food (g).

Frequently asked questions

How does the Dog food portion calculator work?

It takes Dog weight (kg) and Activity level and derives Daily dry food (g) from them. The calculation is live as you type, so the result updates on every change.

Which values does the calculator ask for?

2 values: Dog weight (kg) and Activity level. Nothing else is required — no account, no file upload.

What does a typical calculation look like?

With Dog weight (kg) = 20 and Activity level = Low / senior, the calculator returns Daily dry food (g) = 400. Those figures come from running this exact tool, so you can reproduce them by entering the same values.

How much does the result change with different inputs?

It moves a lot. Using Dog weight (kg) = 22 and Activity level = Normal instead, Daily dry food (g) goes from 400 to 550 — which is why it is worth testing a few scenarios rather than trusting a single figure.

Which “Activity level” option should I choose?

You can pick between « Low / senior », « Normal » and « Active / working ». Each one changes what the calculator works out, so switch and compare — the default is « Low / senior ».

What does it give for smaller values?

Scaled down to Dog weight (kg) = 18 and Activity level = Low / senior, Daily dry food (g) comes out at 360. The relationship is worth checking at both ends before you rely on a single result.

When would I actually use this?

Day-to-day care: how much to feed at a given weight, whether a size is right for the breed, and what a life stage means in human terms.

What is the most common mistake?

Using the seven-years rule for a dog's age. Ageing is fast in the first two years and then slows, and it slows much more for a small breed than for a large one — the multiplier is not a constant.

How accurate is it, and what are the limits?

Rough guideline — follow your food's label and your vet's advice.

What is the difference between the Dog food portion calculator and the Dog age calculator?

This one returns Daily dry food (g); the Dog age calculator returns Human age (years). That is the whole difference — open the one whose figure you need.

Further reading

All guides →
How-toHow Much to Feed Your Dog: Portions by Weight and ActivityHow much food a dog needs depends on body weight, age and activity level. Learn how to estimate daily portions from the bag's calorie count — and why your vet is the final word.ExplainerHow Long Is a Dog Pregnant? Why a Date From Mating Is a RangeSixty-three days is measured from ovulation, not from the mating. Counted from a mating date the same pregnancy spreads over two weeks, because sperm survive for days and a bitch is often mated more than once. What the calculator does with that, and where its window stops four days early.How-toDog Years to Human Years: The Real Formula (Not ×7)The old "multiply by 7" rule is a myth. Learn the modern AVMA size-based method: dogs age fast early, then slower, and large breeds age quicker than small ones.How-toCat Years to Human Years: How to Calculate Your Cat's AgeA cat's first two years equal about 24 human years, then add roughly 4 per year. Learn the AAHA-backed method and see life-stage examples for kittens to seniors.ExplainerHow Many Calories Should a Cat Eat? The Arithmetic, and Where It StopsResting energy scales with weight to the power 0.75, not linearly, which is why a chart that doubles the food for a cat twice the weight is 83 kcal a day over. Neutered against intact, indoor against outdoor, and the boundary the arithmetic must not cross.How-toHow Much Substrate Does an Aquarium Need? Depth, Weight and Grain SizeThe depth follows the job: a bare display, a planted tank whose roots need room, an under-gravel plate. Then comes the number people are unprepared for — substrate is what puts a filled tank past what a piece of furniture can hold. Plus why fine sand compacts and coarse gravel traps waste.
Dog food portion calculator — OneKitly