This free Pet Weight Tracker logs weights for all your pets in one place and draws each pet on its own line in one chart. Weight change is slow, so a chart shows what memory misses.
Pet weight creeps up or down a little each month, and owners rarely notice until clothes, collars, or vet visits make it obvious. By then the change is large. A simple log, weighed on the same scale each time, catches the trend early.
To use the tool, type the pet name and weight, pick the date, and press the add button. The chart updates at once, and the entry saves in your browser for your next visit.
Type the pet name, pick the date, and type the weight, then press the add button. Each pet gets its own coloured line, and the chart updates at once. Entries stay saved in your browser, so they are still there next time you open the tool.
Example: Bella weighed 10 kilos on 1 January and 11 kilos on 1 February, while Max stayed at 5 kilos. The chart shows Bella line rising and Max line flat, so you can see at a glance which pet needs a food change.
Tip: weigh pets at the same time of day, ideally before breakfast. Weight shifts during the day after meals and water, so a fixed time keeps readings comparable.
Tip: for small pets, weigh the carrier first, then weigh carrier plus pet, and subtract. It is calmer for the pet and more accurate than holding a wriggling pet on a scale.
Tip: weigh once a week, not every day. Daily readings bounce with food and water, while weekly readings show the real trend without noise.
Common question: how fast should a pet lose weight? Slow loss is safest, often around one to two percent of body weight per month, and your vet should set the target for your pet.
Common question: are my entries private? Yes. Entries save only in your own browser on your own device, and nothing is sent to a server or an account.
Common question: what if a pet gains weight suddenly? A sudden gain can mean overfeeding, less movement, or a health issue, so check food portions and activity, then ask your vet if it continues.
Keep a short note of each result for a month. Write the date, the result, and any change you made. That short record turns a vague feeling that something changed into clear evidence you can show your vet, and it makes the next step much easier to judge. If a number surprises you, recheck the inputs before you change anything in real life, since a typed decimal in the wrong place is the most common cause of a strange result. A photo of the result on your phone works too, as long as you can find it again next month.
A steady routine helps more than a perfect single day. Feed at the same times, measure with scales, keep fresh water out, and give walks and play at regular hours. Pets settle well into routines, and a settled pet is easier to weigh, easier to watch, and easier to care for.
Finally, compare this result with what you already do. If the tool result and your current habit differ a lot, move in small steps toward the new number and watch your pet for two weeks before you change again. Write both numbers down so you can compare them after the first check.
This tool is free to use as often as you like. Bookmark it, recheck the numbers when your pet grows, changes food, or changes routine, and keep the daily care steady. Small, steady habits matter far more for a pet than any single perfect number.