Dog Food Portion Calculator
Daily food portion for your dog by weight and activity.
Enter your values
Enter the dog weight in kg.
Choose one of: Puppy (growth), Adult, active, Adult, less active / neutered, Senior, Weight loss goal.
Enter the calories per cup of food you are working with.
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 food portion
- 4.02 cups
- Daily calorie need
- 1,409 kcal
- Resting energy requirement (RER)
- 783 kcal
- Suggested split
- 2.01 cups x 2 meals
Quick answer
Daily calorie needs are based on resting energy requirement (RER) scaled by an activity factor for age and energy level.
RER = 70 x (weight kg)^0.75; daily calories = RER x activity factor
At a glance
| What it does | Daily food portion for your dog by weight and activity. |
|---|---|
| Category | Everyday |
| Inputs needed | Dog weight, Activity/life stage, Calories per cup of food |
| Main output | Daily food portion |
| Formula | RER = 70 x (weight kg)^0.75; daily calories = RER x activity factor |
| Cost | Free — no sign-up, no download |
How to use the Dog Food Portion Calculator
- 1Enter your dog's weight in kg and their life stage/activity level.
- 2Check the calories per cup on your dog food bag label.
- 3Split the daily portion into 2 meals for most adult dogs, or more frequently for puppies.
Inputs explained
- Dog weight(kg)
- Enter the dog weight in kg.
- Activity/life stage
- Choose one of: Puppy (growth), Adult, active, Adult, less active / neutered, Senior, Weight loss goal.
- Calories per cup of food
- Enter the calories per cup of food you are working with.
Worked example
Using the values the calculator loads with:
Inputs
- Dog weight25 kg
- Activity/life stageAdult, active
- Calories per cup of food350
Results
- Daily food portion4.02 cups
- Daily calorie need1,409 kcal
- Resting energy requirement (RER)783 kcal
- Suggested split2.01 cups x 2 meals
Frequently asked questions
Should I adjust for weight loss?
Yes, use the weight loss factor and monitor body condition, adjusting food down further if needed under vet guidance.
Is this accurate for all breeds?
It's a solid starting estimate, but very active working breeds or specific medical conditions may need vet-guided adjustments.
What do I need to enter into the Dog Food Portion Calculator?
Just 3 values: dog weight, activity/life stage, 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 Portion Calculator work out the answer?
Daily calorie needs are based on resting energy requirement (RER) scaled by an activity factor for age and energy level. It applies the formula RER = 70 x (weight kg)^0.75; daily calories = RER x activity factor and shows the working so you can check each step by hand.
Is the Dog Food Portion 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.