This free dog daily food calculator tells you how much food your dog needs each day, in grams, from body weight, activity level and the energy of the food you use. It runs fully in your browser, so nothing you type is sent to a server, and you need no account and no sign-up to use it.
Many dog owners guess the daily amount, and guessing is where most feeding problems start. Too much food over months quietly adds fat, while too little food leaves a dog thin, tired, and hungry. A simple calculation based on weight and energy gives you a fair starting point instead of a guess.
To use the tool, type in Dog weight (kg), Activity level, Food energy (kcal per kg), Meals per day. Press the calculate button and the tool shows the result at once. If you change any number, press calculate again to see the new result right away.
The result is a guide for a healthy dog, not a medical order. Dogs differ in breed, age, health, and daily life, so use the number as a starting point, then watch weight and body shape over the next few weeks and adjust in small steps.
Example: a 10 kg dog with normal activity needs about 630 kcal a day. With a food that has 3,500 kcal per kg, that is about 180 grams a day, or about 90 grams in each of two meals.
Weigh the food with kitchen scales for a week. A cup can easily be 20 percent more or less than you think, and that gap is often the whole reason a dog gains weight.
Change the amount slowly. If your dog gains weight over two weeks, cut the daily amount by about 10 percent and watch again, rather than making a big sudden cut.
Treats count. If treats make up more than a tenth of the daily calories, the main meals should be smaller, or the daily total will quietly grow.
Common question: Why does the result use weight to the power of 0.75? Because resting energy does not grow in a straight line with weight. A dog twice as heavy does not need twice the energy, and the 0.75 power is the standard veterinary estimate for that curve.
Common question: Is this a substitute for veterinary advice? No. It is a starting point for a healthy adult dog. Dogs that are ill, pregnant, very young, or recovering need a vet to set the amount.
Common question: How often should I recheck the amount? Weigh your dog every two to four weeks at first. If the weight is steady and the body shape looks right, the amount is right. Adjust in small steps when it moves.
Keep a simple notebook for a month. Write the daily grams, the weight each week, and any notes about energy, coat, and stools. That short record turns a vague feeling that something changed into clear evidence you can show your vet, and it makes the next adjustment much easier to judge.
A steady routine helps more than a perfect bowl. Feed at the same times, measure with scales, keep fresh water out, and give walks and play at regular hours. Dogs settle well into routines, and a settled dog is easier to weigh, easier to watch, and easier to feed well.
Finally, check the food bag for feeding guidance and compare it with this result. If the bag guide and this tool differ a lot, start between the two numbers and let the weight of your dog over two weeks decide the final amount. Write both numbers down so you can compare them again after the first weighing.
This tool is free to use as often as you like. Bookmark it, recheck the numbers when your dog grows, changes food, or changes activity, and keep the daily routine steady. Small, steady habits matter far more for a dog than any single perfect number.