This calculator answers two questions Lab owners ask all the time: is my puppy growing at a healthy pace, and how much should I be feeding? Enter your puppy’s age, weight and the calories on the food bag. You’ll see where your puppy sits against a typical range for their sex and age, a rough adult weight, and a daily amount split into meals.
Lab puppy growth and feeding calculator
Enter your puppy’s age and weight to see whether they’re on track, a rough adult weight, and how much to feed each day.
You’ll find this on the bag. Puppy foods are often around 350–450 kcal per cup, or 350–420 kcal per 100 g.
How this works
Typical range. Adult Labs usually weigh 65–80 lb (30–36 kg) for males and 55–70 lb (25–32 kg) for females, based on the AKC breed standard. I widen that by 10% either way, then scale it by the share of adult weight puppies usually reach at each age. Working lines are often lighter and show lines heavier, so a healthy pup can sit outside the band.
Adult weight. Your puppy’s weight divided by the share of adult weight typical at their age. The range is wide for young pups and narrows as they grow.
Food. Daily calories start from resting energy (70 × body weight in kg0.75), multiplied by 3 before 4 months, 2 up to a year and 1.8 after that, then adjusted for activity. The range shown is 10% either side. Treats and chews count, so keep them to about 10% of the day’s calories.
Adjust by shape, not just the numbers. Labs gain weight easily. You should be able to feel your puppy’s ribs under a thin layer of fat and see a waist from above. If that changes, adjust portions gradually and ask your vet.
This is a general guide for healthy Labrador puppies, not veterinary advice or a diagnosis. Ask your vet about your puppy’s weight and diet, especially if they seem unwell or eat a prescription food.
How to read your results
The shaded band. The band on the chart is a typical range for a male or female Lab at each age. It starts from the AKC breed standard for adult weight (65–80 lb for males, 55–70 lb for females), widened a little, then scaled to the share of adult weight puppies usually reach at each age. A puppy slightly outside the band isn’t automatically a problem. Working-line Labs are often lighter, show-line Labs heavier, and every litter has bigger and smaller pups.
The adult weight estimate. This divides your puppy’s current weight by the share of adult weight that’s typical at their age. Treat it as a sanity check. It’s wide for very young puppies and narrows as they grow, so check again every few weeks instead of trusting the first number.
The feeding amount. This is a starting point worked out from your puppy’s weight, age and activity, using the calories on your food’s label. The bag’s own feeding guide and your vet’s advice come first. If your puppy is above the typical range, the calculator works from the top of that range instead of their current weight, because feeding to match extra weight keeps it on.
Weighing your puppy at home
Use the same scale at about the same time of day, ideally before a meal. For a small puppy, weigh yourself holding them and subtract your own weight. Once they’re too big to carry, many vets are happy for you to pop in for a quick weight check. Write the number down every week or two. A trend over time tells you far more than any single reading.
Check body shape, not just the number
Weight is only half the picture. Looking down from above, you should see a waist behind the ribs, and from the side the belly should tuck up. You should be able to feel the ribs under a thin layer of padding without them being sharp or visible. Labs are very good at talking their owners into extra food, so I’d rather see a slightly lean puppy than a round one. If you think your Lab is already carrying extra weight, my guide to helping an overweight Labrador lose weight safely covers what to do next.
Related guides
- Labrador Puppy Feeding Chart by Age: How Much to Feed (8 Weeks–12 Months)
- How Much to Feed a 5-Month-Old Labrador Puppy Per Day
- How Much to Feed a 6-Month-Old Labrador Puppy (With Feeding Chart)
- When to Switch a Labrador Puppy From 3 Meals to 2 Meals
- Labrador Treats Per Day: How Many Can You Give?
- How to Stop a Labrador Eating Too Fast
- How to Help an Overweight Labrador Lose Weight Safely
- Male vs Female Labrador: Temperament and Size Guide
- English vs American Labrador: Size, Shape and Temperament Differences
For gear that makes weighing and portioning easier, see my Lab gear picks.
Frequently asked questions
How often should I weigh my Lab puppy?
Every one to two weeks is plenty for most puppies. Weigh them on the same scale at the same time of day, ideally before a meal, and keep a log so you can spot a trend.
My food label only lists kcal per kg. Can I still use this?
Yes. Divide the kcal per kg by 10 to get kcal per 100 g, then choose “kcal per 100 g” in the calculator. A food that lists 3,800 kcal per kg is 380 kcal per 100 g.
Can I use the calculator for an adult Lab?
It’s built for puppies from 8 weeks to 18 months. Once growth has finished, the right amount depends mostly on body shape and activity, so start with the food’s own guide and adjust with your vet. If your adult Lab is carrying extra weight, see my guide to helping an overweight Labrador lose weight safely.
Why does the calculator show a range instead of one number?
Puppies of the same age and breed can differ by several pounds, and food labels are averages. A range is more honest than a single figure. Start in the middle, then adjust based on your puppy’s body shape and weight trend.
Does it work for Lab mixes or working-line Labs?
It’s tuned to typical Lab sizes, so a mix or a lighter working-line puppy can land outside the shaded band without anything being wrong. Judge them by body shape and steady growth, and let your vet confirm.
Where the numbers come from
Adult weight ranges come from the AKC breed standard. The growth band is an approximation of typical Labrador growth, not a published veterinary growth chart, and puppies vary. Use it as a rough guide alongside your vet’s weight checks. For veterinary guidance on nutrition and body condition, see the 2021 AAHA Nutrition and Weight Management Guidelines. This calculator is a general guide for healthy Labrador puppies, not veterinary advice or a diagnosis. Ask your vet about your puppy’s weight and diet, especially if they seem unwell or eat a prescription food.