Cat Weight Chart
Typical cat weights and an ideal-weight check.
Starting estimate, not a diagnosis. Your vet knows your pet.
How to use the cat weight chart
- Enter weight. Eleven pounds is only the opening example.
- Pick queen or tom. That switches Merck's average mature weight. It does not change the ideal-weight formula.
- Mark neutered. That changes maintenance calories, not the score math.
- Choose a body condition card by feel: ribs, waist, and the fat pad under the belly. The sentences are written for cats.
- Read the ideal-weight line. At score 6 it is today's weight divided by 1.10. Scores under 4 do not get a target.
Averages, not a breed encyclopedia
Merck's feeding chapter states an average mature ideal of 2.8 kg for queens and 3.2 kg for toms. The page prints the one that matches the sex you picked: 6.2 lb on the opening queen. Those two numbers are the chart. A table of breed names with stolen ranges is not here, because each range would need its own standard and none was typed from a club.
The opening cat is 11 lb at score 6 of 9. Score 6 is the first step above ideal, about 10% overweight on AAHA's Table 2, so the ideal estimate is 10 lb. Divide today's weight by 1.10 and you should land on the same line, give or take rounding.
Size words like 'large frame' are not a control. Without a cited pound range they would only decorate the page.
The same 10% step, with cat sentences
AAHA's screening section states the 10% rule for pets while discussing the 9-point score, and Table 2 is not split into a dog column and a cat column. This page uses that table for cats: 6 is 10%, 7 is 20%, 8 is 30%, 9 is 40%. Scores 4 and 5 stay at today's weight. Scores 1 to 3 get the words 'no target', because the table has no percent for them.
The cards mention the belly pad because that is how fat shows on a cat. They are not a copy of a poster. If your fingers and the card disagree, believe your fingers and then call the clinic rather than hunting a picture that agrees with you.
Maintenance calories, 280 kcal, use the neutered or intact adult factor. The weight-loss mean, 150 kcal, is filled only above score 5, on the ideal weight, with AAHA's cat figure. The calorie page is where obesity-prone (the 1.0 factor) lives. It is not duplicated here.
How to use the little table
The table fixes the cat at 11 lb and score 6, then shows the queen average, the tom average and maintenance side by side. Change sex on the form and the average on the form moves. The table stays put so you can compare the two Merck figures without losing the ideal-weight example.
A cat above the queen average is not automatically overweight. The score decides that, not the 2.8 kg landmark. A small queen at score 5 can sit under the average and be ideal. A heavy tom at score 8 can sit near the average and still be over-conditioned. Read the card before you read the kilogram.
Kittens do not belong on this adult average. Their band is on the kitten weight page, and it ends at 16 weeks.
Opening cat beside Merck's averages
| Figure | Weight |
|---|---|
| Ideal estimate at 11 lb, score 6 | 10 lb |
| Merck average, queens | 6.2 lb |
| Merck average, toms | 7.1 lb |
| Maintenance at 11 lb, neutered | 280 kcal |
Score 6 is about 10% overweight, so the ideal estimate is today's weight divided by 1.10. Breed ranges are not listed.
Tips and common mistakes
- Feel the ribs and the belly pad. A fluffy coat imitates weight.
- Do not diet a cat down to 2.8 kg because that number is an average. Score the body first.
- Queen versus tom changes the landmark, not the 10% formula.
When to call your vet
- Score 8 or 9, or a belly pad you cannot reconcile with the cards.
- Weight loss you did not plan, or a cat that stops eating when you cut food.
- You wanted a breed's official range. It is not published on this page.
- The cat is still a kitten. Use the kitten band, not the adult average.
Frequently asked questions
How much should my cat weigh?
Start with the score. At 11 lb and score 6 of 9 the ideal estimate is 10 lb. Merck's average mature ideal is 2.8 kg for queens and 3.2 kg for toms, shown as 6.2 lb for the sex you picked. The average is not a target by itself.
Is my cat overweight?
Score 6 and above is the overweight side of AAHA's table. The opening score is 6, about 10 % overweight. Scores 4 and 5 are the ideal band. This is a description plus a percent, not a diagnosis.
How do I check a cat's body condition?
Ribs should be easy to feel under a slight cover at an ideal score. From above there is a waist. Under the belly, a hanging fat pad means you have left scores 4 and 5. Use the cards. They were written for this page.
Where is the breed chart?
It is not on this page. Breed ranges were not copied from clubs or from other sites. The chart you do get is two Merck averages plus the body-condition math.
Does neutering change the ideal weight?
Not the formula. Neutering changes the maintenance calorie line (280 kcal). The ideal weight follows the score and today's weight only.