Dog & Cat Daily Calorie (RER & MER) & Dry/Wet Food Portion Gram Calculator

Compute veterinary RER = 70 × (kg)^0.75, daily MER kcal, and dry/wet food grams per meal.

Daily Maintenance Calories (MER)
978.75 kcal / day
Resting Energy Requirement (RER = 70·kg^0.75) 611.72 kcal/day
Daily Food Portions (at Stated kcal/unit) 2.61 cups / 100g units
Maximum Safe 10% Treat Allowance 97.88 kcal/day
Inputs
⚡ Scenarios:
kg
Pet body weight in kilograms (1 kg = 2.2046 lbs).
× RER
MER Factor (1.6 neutered adult dog, 1.8 intact dog, 1.2 neutered cat, 1.0 weight loss, 2.5 puppy).
kcal/unit
Calorie density of pet food (kcal per cup or per 100g).
Results & Graph
Daily Maintenance Calories (MER)
978.75 kcal / day
Resting Energy Requirement (RER = 70·kg^0.75)
611.72 kcal/day
Daily Food Portions (at Stated kcal/unit)
2.61 cups / 100g units
Maximum Safe 10% Treat Allowance
97.88 kcal/day

Daily Maintenance Calories (MER)

Graph 1 • Pet Daily Calories (RER & MER) • Domain Architecture & Live Telemetry Maps Pet Weight Kg, Life Stage Activity Multiplier, Food Energy Density Kcal Per Cup Or100g through Pet Daily Calories (RER & MER) Formula.
PETS, VEHICLES & LIFESTYLE Daily Maintenance Calories 978.75 kcal / da Resting Energy Requirement 611.72 kcal/day Pet Daily Calories (RER & MER) • Component Waterfall Daily Maintenance Calories (ME 978.75 kcal / day Resting Energy Requirement (RE 611.72 kcal/day Daily Food Portions (at Stated 2.61 cups / 100g units Maximum Safe 10% Treat Allowan 97.88 kcal/day
Graph 2 • Daily Maintenance Calories (MER) Across Pet Weight Kg Sweep (40% → 160%) Evaluates RER_kcal = 70 × (BodyWeightKg)^0.75; MER_kcal = RER × ActivityFactor; across 7 operating points (current input highlighted).
0 kcal / 765.8 kcal / 1.5k kcal / 492.3 7.20kg 667.3 10.80kg 827.9 14.40kg 978.8 18kg 1.1k 21.60kg 1.3k 25.20kg 1.4k 28.80kg
Graph 3 • Joint Sensitivity: Pet Weight Kg × Life Stage Activity Multiplier Compares Daily Maintenance Calories (MER) when Life Stage Activity Multiplier is shifted +25% (solid) vs. −25% (dashed).
0 kcal / 819.2 kcal / 1.6k kcal / --- Life Stage Activity Multiplier @ 75% 936.3 -30% 1.1k -15% 1.2k +0% 1.4k +15% 1.5k +30%
Summary: At 18 kg (39.7 lbs), Resting Energy Requirement (RER) is 612 kcal/day and Maintenance Energy (MER at 1.6×) is 979 kcal/day (2.61 cups/units per day).
Summary: At 18 kg (39.7 lbs), Resting Energy Requirement (RER) is 612 kcal/day and Maintenance Energy (MER at 1.6×) is 979 kcal/day (2.61 cups/units per day).
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Formula & Mathematical Methodology: Pet Daily Calories (RER & MER) Formula

RERkcal = 70 × (BodyWeightKg)0.75
MERkcal = RER × ActivityFactor
DailyFoodGrams = (MERkcal / KcalPerKgFood) × 1000
RER_kcal = 70 × (BodyWeightKg)^0.75; MER_kcal = RER × ActivityFactor; DailyFoodGrams = (MER_kcal / KcalPerKgFood) × 1000
  • petWeightKg: Pet body weight in kilograms (1 kg = 2.2046 lbs).
  • lifeStageActivityMultiplier: MER Factor (1.6 neutered adult dog, 1.8 intact dog, 1.2 neutered cat, 1.0 weight loss, 2.5 puppy).
  • foodEnergyDensityKcalPerCupOr100g: Calorie density of pet food (kcal per cup or per 100g).

Rounding: Internal floating-point calculations preserve full precision; currency and percentage outputs round to 2 decimal places.

Worked Example: Pet Daily Calories (RER & MER) Worked Example

Compute veterinary RER = 70 × (kg)^0.75, daily MER kcal, and dry/wet food grams per meal.

  1. Enter your operational, financial, or physical measurement inputs.
  2. Apply the standard domain equation: RER_kcal = 70 × (BodyWeightKg)^0.75; MER_kcal = RER × ActivityFactor; DailyFoodGrams = (MER_kcal / KcalPerKgFood) × 1000.
  3. Review the primary result, sensitivity metrics, and 3 interactive SVG graphs.
Result: Calculates Pet Daily Calories (RER & MER) via RER_kcal = 70 × (BodyWeightKg)^0.75; MER_kcal = RER × ActivityFactor; DailyFoodGrams = (MER_kcal / KcalPerKgFood) × 1000.

Frequently Asked Questions

How does the Dog & Cat Daily Calorie (RER & MER) & Dry/Wet Food Portion Gram Calculator calculate results?

It computes RER_kcal = 70 × (BodyWeightKg)^0.75; MER_kcal = RER × ActivityFactor; DailyFoodGrams = (MER_kcal / KcalPerKgFood) × 1000 directly in your browser and updates three custom SVG visualizations in real time.

Can I use Goal Seek to solve backwards for any input variable?

Yes. Click "🎯 Goal Seek" in the results toolbar to solve backwards for any input parameter.

Are my business and personal numbers kept private?

Yes. All calculations execute 100% locally in your browser with zero server transmission.

Everyday Life · Pets, Vehicles & Lifestyle

Dog & Cat Daily Calorie (RER & MER) & Dry/Wet Food Portion Gram Calculator: inputs, method, and how to read the result

Compute veterinary RER = 70 × (kg)^0.75, daily MER kcal, and dry/wet food grams per meal.

Choose inputs for the case you are checking

The defaults are illustrative. Replace them with values for your case and keep the units shown beside each field.

  • Pet Weight Kg: Pet body weight in kilograms (1 kg = 2.2046 lbs).
  • Life Stage Activity Multiplier: MER Factor (1.6 neutered adult dog, 1.8 intact dog, 1.2 neutered cat, 1.0 weight loss, 2.5 puppy).
  • Food Energy Density Kcal Per Cup Or100g: Calorie density of pet food (kcal per cup or per 100g).

What the calculation includes

With the default values shown, Daily Maintenance Calories (MER) is 978.75 kcal / day. The calculation follows Pet Daily Calories (RER & MER) Formula; the formula and variable definitions above show how the inputs combine.

One-input check: With the other defaults held constant, changing Pet Weight Kg from 18 kg to 20 kg changes Daily Maintenance Calories (MER) from 978.75 kcal / day to 1,059.23 kcal / day. This is a comparison inside the calculator's stated model, not a prediction.

Where to use caution

  • Uses industry-standard APICS/ASCM supply chain, lean manufacturing, and consumer physics formulas.
  • Actual commercial freight tariffs, marketplace commissions, and utility rates vary by carrier and contract.

Scope: Global Supply Chain, Business & Consumer Standard Check the assumptions and limitations against your situation before relying on the estimate.

More in Everyday Life: ROI Calculator (Return on Investment), Percentage Calculator.