Pet Food Calculator公式

## Pet Food Calculation

Feeding amounts depend on your pet's weight, age, and activity level. The resting energy requirement (RER) formula provides a starting point.

### Formula

**RER (kcal/day) = 30 x Weight(kg) + 70**

**Daily Calories = RER x Activity Multiplier**

Activity multipliers: Inactive/senior (1.1x), Moderate (1.4x), Active (1.7x). One cup of dry dog food averages about 400 calories. Always adjust based on body condition.

计算示例

A 40 lb moderately active dog eating $3/lb food.

  1. Weight in kg = 40 / 2.205 = 18.14 kg
  2. RER = 30 x 18.14 + 70 = 614 kcal
  3. Adjusted = 614 x 1.4 = 860 kcal
  4. Daily cups = 860 / 400 = 2.1 cups
  5. Monthly cost = 2.1 x 0.25 lb x 30 x $3 = $47.25