Dog Food Portion Calculator

How much to feed your dog — cups per day & per meal

Your dog
Your food

Tip: the kcal/cup figure is on your bag's feeding-guidelines panel. Default 360 is typical for dry food.

Cups per day
0
0 / meal

Dog Food Portion Calculator — guide & how to use

What it does

This calculator estimates how much food to feed your dog each day using the same energy formula vets use, then converts daily calories into cups per day and per meal based on the calories in your specific food. Calculated privately in your browser, free.

The formula (vet RER / MER)

  1. RER (resting energy) = 70 × (weight in kg)0.75 kcal/day.
  2. MER (daily need) = RER × a life-stage factor (≈1.6 neutered adult, 1.8 intact, 1.0 weight loss, 2.0 active or older puppy, 3.0 young puppy).
  3. Cups/day = MER ÷ the kcal per cup printed on your food bag.

How to use it

  1. Enter your dog's weight (lb or kg).
  2. Pick the life stage / activity that fits.
  3. Enter the kcal per cup from your bag (or leave the 360 default).
  4. Choose meals per day — the cups split across them.

How to embed this tool on your website

No account, no coding. Copy the embed code and paste it where you want it to appear:

<iframe src="https://snaptoolsuite.com/dog-food-portion-calculator/?embed=1"
  style="width:100%;max-width:560px;height:980px;border:0;"
  title="Dog Food Portion Calculator" loading="lazy"></iframe>
<p>Free <a href="https://snaptoolsuite.com/dog-food-portion-calculator/">Dog Food Portion Calculator</a> by Snap Tool Suite</p>
2 Paste it on your page
3 It just works

See it live: view a real embed example →

Frequently asked questions

How much should I feed my dog?

It depends on weight, life stage, and the calories in your food. This tool applies the vet RER/MER formula and divides by your food's kcal/cup to give cups per day.

How many calories are in a cup of dog food?

Usually 300–500 kcal per cup; the exact number is on your bag. Enter it for accuracy.

Is this veterinary advice?

No — it's an estimate. Confirm portions with your vet, especially for puppies, seniors, or dogs with health conditions.

Is it really free?

Yes. 100% free, everything runs in your browser.

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Dog Crate Size Calculator · Dog Age Calculator · Pet Budget Calculator · New Puppy Checklist · Cat Age Calculator · Pet Sitting Rate Calculator

🔒 Everything is calculated in your browser. We don't store or sell your data. Estimate only — not veterinary advice.