Puppy Weight Calculator

Estimate your puppy's adult weight from its current weight, age in weeks and adult-size tier, and get a rough daily feeding range for its current age. All processing runs locally in your browser. Your data is not uploaded to any server. 100% Local

How to Use the Puppy Weight Calculator

Enter your puppy's current weight and age in weeks, choose the expected adult size tier, then press Calculate. The tool estimates the adult weight and gives a rough daily feeding range for the current age. Use Clear to reset the form.

How the estimate works

• The estimate uses typical fractions of adult weight at each age for small, medium, large and giant breeds, interpolated between anchor ages.
• Because the exact breed is unknown, the result is given by size tier and is only approximate.
• The feeding range uses about 2 to 3 times the resting energy requirement at the current weight, converted at 3500 kcal/kg.
• Growth is not linear, so re-check the estimate as your puppy grows and confirm feeding with your veterinarian.

Features

• Estimates adult weight from current weight, age and size tier
• Early size-tier result when the exact breed is unknown
• Rough daily feeding range for the current age as a starting point
• Instant results with a single click and a copy button
• All processing runs locally in your browser. Your data is not uploaded to any server.

Not veterinary advice. This calculator provides approximate estimates only and does not replace professional advice. If your puppy is unwell or not growing as expected, contact your veterinarian.

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