📏 How Big Will My Cat Get?
Estimate adult size to plan nutrition, carriers, and living space for your growing cat.
Growth tip
Genetics and nutrition influence final size. Weigh your cat monthly to refine predictions and adjust feeding plans.
How to Use This Calculator
Measure weight and age
Use a scale and note age in weeks for more precise estimates.
Select breed size
Pick the category that best matches your cat or its parents.
Track progress
Revisit the calculator each month to adjust nutrition and supplies accordingly.
Formula
Adult Weight ≈ Current Weight ÷ Growth Multiplier
Growth multipliers are derived from typical feline development. Individual cats may fall outside ranges due to genetics or health conditions.
Full Description
Predicting adult weight helps plan diet transitions, carrier sizes, and veterinary dosing. Monitor weight trends and consult your veterinarian if growth seems too rapid or too slow.
Large-breed cats may continue filling out into their third or fourth year. Adjust calorie intake to maintain an ideal body condition score.
Frequently Asked Questions
How accurate is this prediction?
It provides a guideline. Genetics, nutrition, and health can change the final weight by several pounds.
Do spayed/neutered cats grow differently?
Neutering may influence metabolism but typically has minimal effect on skeletal size.
What if I have a mixed-breed cat?
Choose the group that matches parental size or your cat’s current growth curve.
Can I use this for adult cats?
Adult cats have already reached full size. Use the calculator primarily for kittens and adolescents.