Dog Food Calculator
Daily calories and cups for your dog's weight.
Enter your values
Enter the dog's weight in kg.
Choose one of: Puppy (×2.5), Neutered adult (×1.6), Active adult (×1.8), Senior or inactive (×1.4), Weight loss (×1.0).
Enter the calories per cup of food in kcal.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Daily calories
- 1280 kcal
- Cups per day
- 3.37
- Per meal (twice daily)
- 1.68 cups
- Resting energy requirement
- 711 kcal
- Treat allowance (10% max)
- 128 kcal
Working
- 1RER = 70 × 22^0.75 = 711 kcal
Quick answer
Resting energy requirement is 70 × weight in kg^0.75, multiplied by an activity factor of 1.0–1.8.
RER = 70 × kg^0.75; MER = RER × factor
At a glance
| What it does | Daily calories and cups for your dog's weight. |
|---|---|
| Category | Pets |
| Inputs needed | Dog's weight, Life stage and activity, Calories per cup of food |
| Main output | Daily calories |
| Formula | RER = 70 × kg^0.75; MER = RER × factor |
| Cost | Free — no sign-up, no download |
How to use the Dog Food Calculator
- 1Enter your dog's weight in kilograms.
- 2Choose the life stage and activity level.
- 3Enter calories per cup from the food bag.
Inputs explained
- Dog's weight(kg)
- Enter the dog's weight in kg.
- Life stage and activity
- Choose one of: Puppy (×2.5), Neutered adult (×1.6), Active adult (×1.8), Senior or inactive (×1.4), Weight loss (×1.0).
- Calories per cup of food(kcal)
- Enter the calories per cup of food in kcal.
Worked example
Using the values the calculator loads with:
Inputs
- Dog's weight22 kg
- Life stage and activityActive adult (×1.8)
- Calories per cup of food380 kcal
Results
- Daily calories1280 kcal
- Cups per day3.37
- Per meal (twice daily)1.68 cups
- Resting energy requirement711 kcal
- Treat allowance (10% max)128 kcal
- RER = 70 × 22^0.75 = 711 kcal
Frequently asked questions
Why not just follow the bag?
Bag charts assume active intact adults and commonly overfeed neutered or older dogs by 20–30%.
How do I know if I'm feeding right?
Body condition beats any calculation: you should feel ribs easily and see a waist from above.
What do I need to enter into the Dog Food Calculator?
Just 3 values: dog's weight, life stage and activity, calories per cup of food. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Dog Food Calculator work out the answer?
Resting energy requirement is 70 × weight in kg^0.75, multiplied by an activity factor of 1.0–1.8. It applies the formula RER = 70 × kg^0.75; MER = RER × factor and shows the working so you can check each step by hand.
Is the Dog Food Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.