PetFoodIQ
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Daily Fuel & Fitness Tracker

Enter your pet's details to generate a customized nutrition plan.

kg
1kg25kg50+kg
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Too ThinIdealToo Heavy

Select the score that best matches your pet's silhouette (1-9 scale).

Current Status

Ideal Weight
ThinIdealHeavy

Daily Energy Requirement (DER)

0kcal/day
local_fire_departmentBase RER: 0 kcal

scaleDaily Feeding Amount

Check the back of your pet food bag for calories to get the exact daily feeding amount.

kcal/kg
-g / day
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Daily Water Guide

0ml/day

Essential hydration for optimal health and kidney function.

*Note: Actual water needs may be lower if feeding wet food or a raw diet.

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Treat Allowance (10% Rule)

Main Meals (0)Treats Max (0)

Limit snacks to 10% of total calories to prevent weight gain.

psychologyPersonalized Tips

✨ You are doing great! Keep monitoring their body condition every month.

helpHow to use this result?

1. Adjust Food Amount

Look at your pet food label for "kcal/kg" or "kcal/cup". Divide your DER by the food's calories to find the daily portion.

2. Monitor & Adapt

RER is a starting point. If your pet gains weight, reduce calories by 10%. If they lose weight, increase by 10%.

expand_moreView Calculations

RER = (30 × 12.5) + 70 = 0

Factor = 0 (adult, dog, normal)

DER = 0 × 0 ≈ 0

*For safer weight management in very small pets (under 2kg), a linear calculation formula is conditionally applied.

Pet Nutrition Guide

A Complete Guide to Calculating Your Pet's Daily Calories

Why Accurate Calorie Tracking Matters

Obesity is one of the most common yet preventable diseases in dogs and cats today. Overfeeding your pet, even by just a few extra treats a day, can drastically reduce their lifespan and increase the likelihood of developing diabetes, joint problems (like osteoarthritis), and respiratory illnesses. To safeguard their health, knowing how to accurately calculate their daily energy requirement (DER) is the critical first step.

local_fire_departmentUnderstanding the Calories: RER vs. DER

Before adjusting your pet's diet, you must understand two fundamental veterinary concepts:

1. RER (Resting Energy Requirement): This is the baseline number of calories your dog or cat would burn if they simply rested all day without moving. It's akin to a human's Basal Metabolic Rate (BMR). 2. DER (Daily Energy Requirement): This builds upon the RER by factoring in your pet's specific life stage, neuter status, and activity level. Since an active working dog burns significantly more calories than a sedentary indoor cat, the DER is what you actually feed them every day.

fitness_centerThe Importance of Body Condition Score (BCS)

Weight alone doesn't tell the whole story. Two Golden Retrievers might both weigh 70 lbs, but one could be perfectly lean and muscular while the other is heavily overweight. This is where the Body Condition Score (BCS) comes in.

BCS evaluates the animal's body fat purely by sight and touch. In an ideal 4 or 5 score (on a 9-point scale), you should be able to easily feel the ribs without pressing hard, and there should be a visible waist tucked behind the rib cage when viewed from above. Tracking BCS monthly alongside body weight ensures you are not just maintaining weight, but maintaining a healthy body composition.

How the PetFoodIQ Fuel Tracker Helps

Our advanced Fuel Tracker integrates World Small Animal Veterinary Association (WSAVA) clinical guidelines to generate precision calorie targets. Not only do we establish the exact DER, but our tool also introduces the crucial 10% Treat Rule. Treats and human foods are nutritionally unbalanced; if they make up more than 10% of your pet's daily intake, they will lead to nutritional deficiencies and rapid weight gain. We calculate this exact treat allowance boundary for you.

What's Next

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helpFrequently Asked Questions

Bag guidelines are broad averages. This calculator uses WSAVA veterinary formulas tailored exactly to your pet's unique age, neuter status, and activity level.

RER (Resting Energy Requirement) is the baseline calories needed just to exist. DER (Daily Energy Requirement) is the total calories needed including daily activity.

Neutering/spaying alters metabolism and hormones, typically reducing total daily energy requirements by about 20-30%.

Our calculator automatically uses a specialized veterinary formula (Ideal Body Weight estimation) when you select a Body Condition Score of 6 or higher. For safe weight loss, it's crucial to feed exactly the recommended DER (Daily Energy Requirement) and completely eliminate high-calorie treats until they reach an ideal BCS of 4 or 5.

Most dogs and cats should transition to adult food around 12 months of age. However, large or giant breed dogs (over 50 lbs / 25 kg adult weight) may need puppy food until 18 to 24 months to ensure proper bone and joint development. Always consult your vet for the best timing.