Is my dog overweight?

Body Condition Score (BCS): feel ribs through thin fat layer (4-5/9 ideal). Visible waist when viewed from above. Tucked abdomen when viewed from side. If ribs are hard to feel without pressing or there's no waist, dog is overweight. Most veterinary visits include BCS assessment. About 60% of US dogs are overweight or obese (AVMA data); owners systematically underestimate their pet's body condition.

Why are kibble package recommendations so high?

Pet food companies have incentive to recommend more (sells more food). Independent veterinary research consistently finds package recommendations 20-40% higher than actual caloric needs. Trust calculator-derived numbers based on RER × activity factor; treat package guides as upper bound only. If your dog is gaining weight at the package recommended amount, reduce by 25%.

How fast can I do weight loss?

Slowly — 1-2% body weight per week max. A 70-lb dog targeting 60 lb should aim for 12-20 weeks of weight loss, not crash dieting. Reduce daily calories by 20% from current intake, switch to lower-calorie food formulation, increase exercise, weigh monthly. Faster loss can stress liver and metabolic function. Vet supervision recommended for dogs 15%+ overweight.

Should I free-feed or scheduled-feed?

Scheduled is better for most adult dogs. Free-feeding (food always available) leads to overconsumption in most dogs, especially Labradors and Golden Retrievers (genetically predisposed to overeating). Two meals/day at consistent times match natural feeding rhythm, prevent overconsumption, let you monitor appetite (skipped meal = early illness signal). Multi-dog households especially benefit because you can monitor individual intake.

Both work. Dry kibble: convenient, cheaper, dental benefit (slight). Wet food: more palatable, higher moisture (good for kidney health), more expensive. Mixed: many vets recommend 70/30 dry/wet for variety + hydration. Calorie density varies dramatically: dry ~350 kcal/cup; wet ~70-100 kcal/3-oz can. Adjust portions when switching to keep total kcal constant.

How do I switch foods?

Gradually over 7-10 days. Day 1-3: 75% old, 25% new. Day 4-6: 50/50. Day 7-10: 25% old, 75% new. Day 11+: 100% new. Sudden change causes GI upset (loose stools, vomiting, gas). Some dogs handle change easily; sensitive-stomach dogs need slower transition. Same applies to switching protein sources (chicken to lamb) within same brand.

Pets · Free tool

Dog Food Amount Calculator

Daily calories and cups by weight, age, activity, body condition. Meal split included.

Updated June 2026

Dog weight (lbs)Age / life stageActivity levelBody conditionKcal per cup of your kibbleCheck your bag’s label — most dry kibble ranges 340–450 kcal/cup.

Daily calories

1108 kcal/day

Resting energy (RER): 615 kcal — full requirement shown above.

Cups of kibble / day

2.8 cups

Range: 2.4–3.3 cups depending on density.

Meals per day

2 meals × ~1.38 cups

Split evenly. Puppies need more frequent, smaller meals.

Always check your specific kibble’s calorie density — numbers vary by 20%+ brand to brand. Weigh your dog monthly and adjust if body condition drifts.

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What it does

Dog caloric needs follow the standard veterinary formula: Resting Energy Requirement (RER) = 70 × (body weight in kg)^0.75. Multiply by activity factor for Daily Energy Requirement (DER): sedentary / spayed-neutered adult 1.2-1.4× RER; active adult 1.6-1.8× RER; working dog 2.0-3.0× RER; growing puppy 2.0× RER (4-12 months) to 3.0× (under 4 months); pregnant / lactating 2.0-4.0× RER. So a 30-kg (66-lb) moderately-active spayed Labrador: RER = 70 × 30^0.75 ≈ 900 kcal; DER = 900 × 1.6 = 1440 kcal/day. Most kibble brands publish kcal/cup on packaging; divide DER by kibble kcal/cup to get cups/day. The calculator handles this math and shows cups, grams, and recommended meals/day.

The calculator takes weight, age, activity level, body condition, and reproductive status (intact / spayed-neutered — neutered dogs need ~25% fewer calories due to metabolic shift), then outputs daily caloric target plus cups/day for typical kibble (300-400 kcal/cup) or wet food (3-oz can ≈ 70-100 kcal). Spread across 2 meals/day for adults; 3-4 meals for puppies under 6 months. Most kibble package guidelines OVERSTATE serving size by 20-40% (kibble companies have incentive to sell more food); calculator shows true caloric needs rather than industry-friendly portions.

Practical considerations: (1) Body Condition Score (BCS) on 1-9 scale: 4-5 ideal; ribs easily palpable through thin fat layer, visible waist when viewed from above, tucked abdomen when viewed from side. If you can't feel ribs without pressing hard, dog is overweight. Most US dogs are BCS 6-7 (overweight) due to overfeeding. (2) Treats count toward daily calories — should be max 10% of total. A “just one treat” per family member 5x/day easily reaches 200+ extra kcal — significant for a 1400 kcal/day dog. (3) Free-feeding (food always available) leads to obesity in most dogs; scheduled meals (2× / day for adults) prevent overconsumption. (4) Weight-loss programs need vet supervision — target 1-2% body weight loss per week (slower than humans because rapid loss stresses dog metabolism). (5) Age adjustments — senior dogs (7+ years for large breeds, 10+ for small) often need 15-20% fewer calories due to reduced activity and slower metabolism. (6) Switch food gradually — sudden food change causes digestive upset; transition over 7-10 days mixing old + new in increasing ratio.

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How to use it

Enter your dog's weight in lbs or kg.
Pick age category (puppy / adult / senior).
Pick activity level (sedentary / moderate / active / working).
Specify intact vs spayed/neutered (neutered ~25% fewer calories).
Enter your specific food's kcal/cup if you want precise portions.
Read daily calorie target and cups/day.

When to use this tool

Setting initial portions for a new dog or puppy.
Switching foods — recalculate because kcal density varies between brands.
Implementing a weight-loss program (vet-supervised).
Senior dog adjustment — reducing calories as activity declines.
Multi-dog households — calculating per-dog portions.

When not to use it

Specific medical diets (kidney, liver, pancreatic conditions) — vet-prescribed diets override generic calculators.
Pregnant or lactating dogs — calorie needs spike to 2-4× normal; vet guidance.
Performance / working dogs in heavy training (sled dogs, hunting dogs) — needs sport-specific energy modeling.
Underweight dogs with unknown cause — see vet for diagnostic workup; weight loss may indicate disease.

Common use cases

Quick calculation during a typical workday
Pre-decision sanity-check on inputs and outputs
Educational use — demonstrating the underlying concept
Onboarding a colleague who needs the same calculation/conversion

Frequently asked questions

Is my dog overweight?: Body Condition Score (BCS): feel ribs through thin fat layer (4-5/9 ideal). Visible waist when viewed from above. Tucked abdomen when viewed from side. If ribs are hard to feel without pressing or there's no waist, dog is overweight. Most veterinary visits include BCS assessment. About 60% of US dogs are overweight or obese (AVMA data); owners systematically underestimate their pet's body condition.
Why are kibble package recommendations so high?: Pet food companies have incentive to recommend more (sells more food). Independent veterinary research consistently finds package recommendations 20-40% higher than actual caloric needs. Trust calculator-derived numbers based on RER × activity factor; treat package guides as upper bound only. If your dog is gaining weight at the package recommended amount, reduce by 25%.
How fast can I do weight loss?: Slowly — 1-2% body weight per week max. A 70-lb dog targeting 60 lb should aim for 12-20 weeks of weight loss, not crash dieting. Reduce daily calories by 20% from current intake, switch to lower-calorie food formulation, increase exercise, weigh monthly. Faster loss can stress liver and metabolic function. Vet supervision recommended for dogs 15%+ overweight.
Should I free-feed or scheduled-feed?: Scheduled is better for most adult dogs. Free-feeding (food always available) leads to overconsumption in most dogs, especially Labradors and Golden Retrievers (genetically predisposed to overeating). Two meals/day at consistent times match natural feeding rhythm, prevent overconsumption, let you monitor appetite (skipped meal = early illness signal). Multi-dog households especially benefit because you can monitor individual intake.
Wet vs dry food?: Both work. Dry kibble: convenient, cheaper, dental benefit (slight). Wet food: more palatable, higher moisture (good for kidney health), more expensive. Mixed: many vets recommend 70/30 dry/wet for variety + hydration. Calorie density varies dramatically: dry ~350 kcal/cup; wet ~70-100 kcal/3-oz can. Adjust portions when switching to keep total kcal constant.
How do I switch foods?: Gradually over 7-10 days. Day 1-3: 75% old, 25% new. Day 4-6: 50/50. Day 7-10: 25% old, 75% new. Day 11+: 100% new. Sudden change causes GI upset (loose stools, vomiting, gas). Some dogs handle change easily; sensitive-stomach dogs need slower transition. Same applies to switching protein sources (chicken to lamb) within same brand.

Learn more

How-To & Life · GuideHow to Feed Dog Treats Without Overdoing ItIdentify hidden calorie bombs and explore low-cal training alternatives while avoiding toxic foods. Free instant guide for any dog—no registration required.

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