Use the free Kitten Growth Tracker below, right in your browser. No sign-up, no software to install, and nothing is sent to a server.
A kitten grows fast, and the scale tells the story before your eyes can. In the first weeks, a healthy kitten gains weight almost every day, then the pace slows as it moves toward adult size. The Kitten Growth Tracker helps you record that story one weighing at a time, so you can see steady progress instead of guessing from memory.
Weighing matters because kittens hide illness well. A kitten that stops gaining, or loses weight, may still play and eat, so the change is easy to miss. A simple log turns small changes into a clear pattern. If growth stalls for more than a few days, you have real numbers to show your vet instead of a vague worry.
To use the tool, weigh your kitten on a kitchen scale in grams, once a week, at about the same time of day. Type the age in weeks and the weight, then press Add entry. Each entry is saved in your browser, so your log is still there when you come back. The chart draws the curve for you, and the reference band shows the usual range for that age.
The reference bands in this tool are educational guides, not medical limits. Kittens vary by breed and size, and a small kitten can be perfectly healthy below the middle of a band. What matters most is the trend: a steady upward line, even a slow one, is a better sign than one big jump followed by a flat stretch.
Try a worked example to see how it reads. A kitten weighing 900 grams at 8 weeks sits inside the 700 to 1000 gram band for that age. If it reaches 1200 grams by 10 weeks, the weekly gain is 150 grams per week, which is a healthy pace for that stage. The tool shows this gain under the chart, so you do not need to do the maths yourself.
Weigh at the same time each week, ideally before a meal, and use the same scale. Put the kitten in a light bowl or basket, weigh the container first, then subtract it. Weighing after meals or on different scales adds noise that can look like a sudden gain or loss, and that noise can cause worry for no reason.
Watch for three warning signs between vet visits. First, weight loss at any age is worth a call to the vet. Second, no gain over two weekly weighings in a kitten under 12 weeks deserves attention. Third, a sudden jump combined with a swollen belly or soft stools may mean worms or overfeeding, and both are easy for a vet to check.
Feeding and growth go together, so keep a short note of food changes next to your log. A new food, a larger portion, or the start of weaning can all change the curve for a week or two. When you can match a bend in the chart to a change you made, you learn what works for your kitten instead of changing three things at once.
This tool is educational only and never replaces veterinary advice. If your kitten is weak, refuses food, has diarrhoea, or is not gaining, contact a vet promptly, especially under 8 weeks of age. Young kittens can fade quickly, so early advice is always better than waiting for the next weekly weighing to confirm a problem.
Start today with one weighing, then add an entry each week. After a month you will have a curve that shows real progress, and that record is useful at every vet visit. A healthy kitten, a steady chart, and a calm owner all come from the same habit: weigh, record, and watch the trend.
Versión en español: Seguimiento de crecimiento de gatitos – Peso semanal con gráfica