Pet Weight Calculator
How it helps you check a pet’s weight and food need. A pet weight calculator is a small tool. It makes math easy. It shows daily calories and food grams. It can guide feeding and weight goals.
It is useful for dogs and cats. It is made for pet owners and carers. It uses simple numbers. It asks for weight and food energy. Then it gives clear amounts. Use it to avoid overfeed or underfeed. It can save time and stress.
When to calculate your pet’s weight
An engineer is teaching a student in a small park. He is checking Bruno the dog now. He notices Bruno looks chunky. He asks, “How much should we feed him?” The student weighs Bruno on a scale.
Then they use a calculator to find food per day. They check label numbers and match them. This real check keeps Bruno healthy. It also helps them plan walks and meals. They are calm and sure while they work.
Calculate Bruno’s daily food — step by step
First know the formula.
Daily Calories = Body Weight (kg) × Calories per kg.
Food Grams = Daily Calories ÷ Calories per gram of food.
Now use real numbers. Bruno weighs 20 kg. Use 30 kcal per kg for maintenance. The kibble gives 3.5 kcal per gram.
Step one: Daily Calories = 20 × 30.
So Daily Calories = 600 kcal.
Step two: Food Grams = 600 ÷ 3.5.
So Food Grams = 171.43 g.
Round to 171 g. Feed 171 g per day. Split into two meals. Monitor energy and body shape. If Bruno gains, lower by a small amount. If he loses, raise slightly.
FAQs
Q: Can I use the same number for cats?
A: No. Cats need a different kcal per kg. Check a cat guide or vet.
Q: How often should I recalc?
A: Weigh monthly or when you see change. Recalc then.
Q: What if food label uses kcal per 100 g?
A: Convert it. Divide by 100 to get kcal per gram.
Quick trick:
weigh your pet weekly and note food on the bag. Then multiply weight by 30 and divide by the food kcal per gram. This gives a fast daily portion. Using a calculator is faster and it reduces guesswork.

