OhMyCalc

Dog Food Calculator

Calculate daily calorie needs for your dog using the resting energy requirement (RER) formula.

How to Use the Dog Food Calculator

  1. Enter the required values into the input fields.
  2. Click the Calculate button to see the results.
  3. Review the output values and interpretations below.

Riferimento Rapido

DaA
5 kg dog (normal)~234 kcal/day
10 kg dog (normal)~394 kcal/day
20 kg dog (normal)~662 kcal/day
30 kg dog (normal)~905 kcal/day
40 kg dog (normal)~1134 kcal/day

Casi d'Uso

Formula

Formula: RER = 70 × Weight^0.75 kcal/day. MER = RER × Activity factor (1.2–3.0). Food = MER / kcal per gram.

Domande Frequenti

What is RER?
Resting Energy Requirement (RER) is the base energy a dog needs at rest. It is calculated as 70 × body weight in kg raised to the 0.75 power.
How is the activity factor determined?
Inactive/senior dogs use factor 1.2, normal adults 1.6, active/growing dogs 2.0, and working dogs up to 3.0 or more.
How much dry food should I give?
The food estimate assumes average dry food at ~3.5 kcal/g. Check your specific brand's calorie content for accurate portions. Always consult your vet.