More dog owners are choosing to cook for their dogs than ever before. The appeal is clear: you control every ingredient, you know exactly what your dog is eating, and fresh whole food is closer to nature than processed kibble. But homemade dog food comes with a serious risk that most owners underestimate — nutritional imbalance. Without the right portions and ingredient ratios, homemade diets quickly develop deficiencies in calcium, phosphorus, vitamins, and essential fatty acids.
A homemade dog food calculator solves this at the foundation. It tells you exactly how many grams of food your dog needs per day based on body weight and life stage, and when combined with a balanced ingredient ratio, gives you a complete, daily-accurate homemade feeding plan. The math is not complicated — but it must be done correctly every single time.
🔢 How to Calculate Homemade Dog Food Portions
There are two approaches to calculating how much homemade food your dog needs. Both are reliable — the second is more precise:
Method 1 — Percentage Body Weight (Fast & Simple)
Feed 2–3% of your dog's ideal body weight per day in homemade food. Active dogs need the higher end; senior or low-activity dogs need the lower end. Puppies need significantly more — see Section 3 below.
Method 2 — RER Formula (Most Accurate)
The Resting Energy Requirement (RER) formula calculates your dog's exact caloric needs, then converts to grams based on the caloric density of your homemade recipe. Our free dog food calculator does this automatically — select "Mixed Diet" as the food type to get the closest estimate for homemade food.
⚖️ The 50/25/15/10 Ingredient Ratio
Knowing how much to feed is only half of homemade feeding. The ingredients within that amount must be balanced. The most widely used vet-recommended ratio for homemade dog food is:
📋 Homemade Dog Food Chart by Weight
Daily homemade food amounts at 2.5% of body weight for adult dogs with moderate activity. Split into 2 equal meals:
| Dog Weight | Daily Amount (2%) | Daily Amount (2.5%) | Per Meal (÷2) | Protein Portion |
|---|---|---|---|---|
| 5 kg | 100 g | 125 g | 62 g | 62 g |
| 10 kg | 200 g | 250 g | 125 g | 125 g |
| 15 kg | 300 g | 375 g | 188 g | 188 g |
| 20 kg | 400 g | 500 g | 250 g | 250 g |
| 30 kg | 600 g | 750 g | 375 g | 375 g |
| 40 kg | 800 g | 1000 g | 500 g | 500 g |
✅ Safe & Unsafe Ingredients for Homemade Dog Food
Safe Ingredients to Include
- Proteins: Cooked chicken, turkey, lean beef, salmon (boneless), eggs, sardines in water
- Carbohydrates: Brown rice, sweet potato, plain oats, white potato (cooked), quinoa
- Vegetables: Carrots, broccoli, green beans, peas, spinach, courgette, cucumber
- Fruits (in small amounts): Blueberries, apple (no seeds), watermelon (no rind), banana
Ingredients to Never Use
- Onion and garlic — destroy red blood cells, cause hemolytic anemia even in small amounts
- Grapes and raisins — cause sudden acute kidney failure, no safe dose known
- Cooked bones — splinter dangerously; raw bones only, or no bones at all
- Xylitol — found in sugar-free foods; causes life-threatening hypoglycemia in dogs
- Macadamia nuts — neurologically toxic to dogs even in small amounts
- Chocolate and caffeine — contain theobromine and caffeine, both toxic to dogs
- Avocado — contains persin, which causes vomiting and heart damage in dogs
- Feed 2–3% of body weight per day in homemade food — use our calculator for precision
- Follow the 50/25/15/10 ratio: protein, carbs, vegetables, fats and supplements
- Always add a vet-approved calcium supplement — never skip this step
- Rotate protein sources weekly for complete nutritional coverage
- Never use onions, garlic, grapes, raisins, xylitol, or chocolate in any amount
- Cook all proteins thoroughly unless following a vet-supervised raw protocol
- Recheck portions and adjust every 2 weeks based on your dog's body condition