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Pet Food Calculator

Calculate daily food portions for dogs and cats using the veterinary RER formula. Based on weight, age, and activity level with monthly cost estimates.

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How to Use Pet Food Calculator

  1. 1Select dog or cat
  2. 2Enter pet weight and age
  3. 3Choose activity level
  4. 4View daily portions and cost

Frequently Asked Questions

Use RER formula: 70 × weight in kg^0.75, then multiply by activity factor. A 50 lb moderately active dog needs about 1,100-1,300 calories per day, or roughly 3 cups of dry food.

Indoor cats need 20-25 calories per pound of body weight. A 10 lb indoor cat needs about 200-250 calories/day, roughly 1/3 to 1/2 cup of dry food.

Puppies (under 6 months): 3 meals/day. Adult dogs: 2 meals/day. Kittens: 3-4 meals/day. Adult cats: 2 meals/day.

The Pet Food Calculator is a free online tool that lets you calculate daily pet food portions for dogs and cats based on weight, age, and activity. It is part of NexTool's collection of free tools designed to help you work faster and more efficiently.

Using the Pet Food Calculator is simple: visit the tool page, enter your data or input into the provided fields, and get instant results. No downloads, installations, or sign-ups are required. The tool runs directly in your web browser for maximum convenience.

Yes, the Pet Food Calculator is 100% free to use with no limitations. There is no registration required, no daily usage caps, and no hidden fees. You can use it as many times as you need.

The Pet Food Calculator uses industry-standard formulas and algorithms to deliver reliable results. While the tool is designed for accuracy, results should be used as estimates and guidance. For critical decisions, always consult a qualified professional.

Yes, after running your calculation you can copy the results to your clipboard or take a screenshot. The Pet Food Calculator displays a detailed breakdown so you can easily record or share your numbers. No account is required to use or save results.

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About Pet Food Calculator

Calculate daily food portions for dogs and cats using the veterinary RER formula. Based on weight, age, and activity level with monthly cost estimates.

NexTool's Pet Food Calculator is completely free to use with no sign-up required. Your data is processed directly in your browser and never sent to our servers, ensuring complete privacy and instant results.

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Compare Options

Best Of · 5 options reviewedBest Pet Insurance Companies of 2026Veterinary costs continue to rise, making pet insurance an increasingly smart financial decision for dog and cat owners in 2026. This comparison ranks the top pet insurance providers by monthly premium costs, reimbursement rates, annual coverage limits, deductible options, and claim processing speed. We evaluated each company for their coverage of accidents, illnesses, hereditary conditions, dental care, and wellness add-ons. Whether you have a young puppy, an older rescue dog, an indoor cat, or an exotic breed, this guide helps you find the right plan that covers unexpected vet bills without breaking your budget. We also explain important policy details like waiting periods, pre-existing condition exclusions, and the difference between accident-only and comprehensive illness plans so you can make an informed decision.

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Daily Calories
655 kcal
RER: 727 kcal
Meals Per Day
2
0.9 cups/meal (dry)
Monthly (Dry)
$38.77
12.9 lbs/month
Dry Food Only
1.7 cups/day
12.9 lbs/month
$38.77/month
$465.21/year
Wet Food Only
1.6 cans/day
13 oz cans
$122.76/month
$1,473.16/year
Mixed (50/50)
0.9 + 0.8
cups + cans per day
$80.77/month
$969.18/year
Dog Size Reference
Size / BreedWeight RangeDaily Cal (est)Cups/Day (est)
Toy (Chihuahua, Yorkie)2-10 lbs148 kcal0.4
Small (Beagle, Corgi)10-25 lbs338 kcal0.9
Medium (Border Collie, Bulldog)25-50 lbs592 kcal1.6
Large (Lab, Golden Retriever)50-80 lbs886 kcal2.3
Giant (Great Dane, Mastiff)80-150 lbs1,314 kcal3.5
Feeding Guidelines
Measure Portions
Use a cup
Eyeballing leads to overfeeding
Consistent Schedule
2x daily
Feed at the same times each day
Fresh Water
Always available
1 oz water per lb body weight/day
Weight Checks
Monthly
Adjust food if weight changes
Treats
< 10% calories
Treats should not exceed 10% of daily intake
Transition Food
7-10 days
Mix old and new food gradually