Wet vs Dry Puppy Food: Calories, Cost and Routine

Quick answer Both wet and dry puppy foods can be complete and balanced; they differ in water and calories per gram. A 5 kg puppy under 17 weeks needs about 702 kcal: roughly 185 g of 3,800 kcal/kg dry or 702 g of 1,000 kcal/kg wet. Compare cost per 1,000 kcal and recalculate when mixing.

When you choose a puppy food, one of the first decisions is the format: the bag of kibble or the cans and trays of wet food. Shops sell both, owners have strong opinions and puppies mostly do not mind. The practical differences are the water content, the calories per gram, the cost, the convenience and how the food fits into your day. This guide compares them on those points with worked arithmetic for a 5 kg puppy and explains how to mix them without overfeeding. It is not a recommendation of one over the other: the best food is a complete and balanced one for growth that your puppy eats well and your vet is happy with.

The key difference: water

Dry food is typically around 10% water, and wet food around 75 to 80%. That single fact explains most of the differences in grams, label percentages and cost.

Feature	Dry (typical)	Wet (typical)
Moisture	About 10%	About 75–80%
Energy	About 3,400 to 4,200 kcal/kg	About 800 to 1,200 kcal/kg
Grams for the same calories	Fewer	Roughly three to four times more
Label protein %	Higher as fed	Lower as fed (diluted by water)
Storage	Sealed bag in a cool, dry place	Fridge once opened
Convenience	Easy to measure and store	More mess; short life once opened

The ranges are illustrative and the label of your own food is what counts. When you compare nutrient percentages across formats, use a dry matter basis; see dry matter basis explained and why wet food looks low in protein.

Calories and grams for a 5 kg puppy

A 5 kg puppy under about 17 weeks uses 3.0 times resting energy: 70 × 5 ^ 0.75 = 234, so 3.0 × 234 = 702 kcal. Over 17 weeks the factor is 2.0 and the need is 468 kcal.

Food (illustrative energy)	Grams a day for 702 kcal	Grams a day for 468 kcal
Dry, 3,400 kcal/kg	206 g	138 g
Dry, 3,800 kcal/kg	185 g	123 g
Dry, 4,200 kcal/kg	167 g	111 g
Wet, 800 kcal/kg	878 g	585 g
Wet, 1,000 kcal/kg	702 g	468 g
Wet, 1,200 kcal/kg	585 g	390 g

At 1,000 kcal/kg, wet food at 702 g is more than three and a half times the weight of 185 g of dry food. That is a lot of food for a small puppy’s stomach, which is one reason many owners feed wet food as part of a mixture or in more meals. The Puppy Food Calculator works out the grams for the food you use.

Cost per 1,000 kcal

Price per kilogram can mislead, because wet and dry foods contain different amounts of energy per kilogram. The better comparison is cost per 1,000 kcal: price per kg ÷ kcal per kg × 1,000.

Example	Price per kg	kcal per kg	Cost per 1,000 kcal
Dry food A	3.50	3,800	0.92
Dry food B	6.00	4,000	1.50
Wet food C	4.00	1,000	4.00
Wet food D	6.50	1,100	5.91

The prices are examples for illustration. In this example, the wet food costs several times as much per 1,000 kcal as the dry. Real prices vary widely, so do the sum with the Pet Food Price per 1,000 kcal Calculator for your foods. For a growing puppy, whose food bill rises quickly, this is worth checking, but cost is only one factor.

Mixing wet and dry

Many owners use both. The simple method is to decide the share of calories from each.

Work out the puppy’s daily calories (702 kcal in the example).
Choose the split, say 25% wet and 75% dry: 176 kcal wet and 527 kcal dry.
Convert each: wet 176 ÷ 1.0 = 176 g; dry 527 ÷ 3.8 = 139 g.
Feed the grams in the meals you choose.

If you simply add wet food on top of the full dry amount, the calories double up. A common cause of weight gain is the “topper” that is not subtracted. The Dog Wet & Dry Food Calculator automates the split, and the guide to wet and dry dog food together goes into more detail.

Practical points

Storage. Dry food keeps in a sealed container; wet food needs the fridge once opened and has a short life, so check the label. Serve at room temperature.

Mess and portion control. Dry is easy to scoop and weigh; wet is messier but can be easier for very small puppies.

Appetite. Some puppies prefer the smell of wet food. A little mixed into dry can tempt a fussy eater, but count its calories.

Teeth. Some people think dry food helps teeth. Evidence varies by product, and puppies have milk teeth that fall out, so ask your vet about dental care rather than relying on the format.

Water. Wet food contributes water, but fresh water should always be available.

Stools. Changing the format changes stool consistency. Switch gradually, as in our guide to how to switch dog food.

Reading the label

Whichever format you choose, check:

The nutritional adequacy statement. It should say the food is complete and balanced for growth, or for all life stages.
Kcal per kg or per can. You need this to calculate amounts.
Moisture. To compare nutrients on a dry matter basis.
The maker’s information. WSAVA suggests asking whether the maker employs a qualified nutritionist and what quality control they use.
Suitability for expected adult size. Large-breed puppies need a food suited to them; see large-breed puppy feeding.

Which suits your household?

If you…	You might lean toward
Want easy measuring and storage	Dry
Have a very small or fussy puppy	Wet, or a mix
Are on a tight budget	Compare cost per 1,000 kcal; dry is often cheaper
Travel a lot	Dry, which is easier to carry
Want more water in the diet	Wet or a mix, plus fresh water

None of these is a rule, and your vet’s advice comes first.

Common mistakes

Comparing label protein percentages across formats.
Adding wet food on top of the full dry amount.
Comparing price per kilogram.
Measuring wet food by the spoonful.
Leaving opened cans out.
Changing format suddenly.
Forgetting to recalculate when the stage changes at about 17 weeks.

Questions to ask your vet

Which format and food suit my puppy?
How should I mix wet and dry?
What daily calories should I aim for?
When should I change foods?
Is there anything I should avoid?

A shopping plan for a growing puppy

Puppy food bills grow with the puppy, so plan for the next months, not just the first bag. A 5 kg puppy eats 185 g of a 3,800 kcal/kg dry food a day; at 10 kg and 20 weeks, 207 g; at 20 kg and 30 weeks, 348 g. The table shows the monthly amounts (30 days) of a dry food at three weights.

Weight	Stage	Daily grams	Monthly kg	Bags of 3 kg per month
5 kg	Under 17 weeks	185 g	5.6 kg	1.9
10 kg	Over 17 weeks	207 g	6.2 kg	2.1
15 kg	Over 17 weeks	281 g	8.4 kg	2.8
20 kg	Over 17 weeks	348 g	10.4 kg	3.5

The Pet Food Bag Duration Calculator will show how long a bag lasts at a daily amount. If you buy wet food, the bill rises faster, because the grams are several times larger. Use the cost per 1,000 kcal to compare, and ask your vet when to change to adult food, as our guide on when to switch puppy food to adult food explains.

Texture, teeth and teething

Puppies lose their baby teeth in the first months, and chewing is part of life. Some owners find a softer wet meal easier when the mouth is sore; others use dry kibble in puzzle toys to keep puppies busy. Neither is a dental plan. Ask your vet about dental care for your puppy, including when to start brushing and which chews, if any, are suitable. Count any chews in the daily calories.

Introducing a new texture safely

If you want to add wet food to a puppy eating dry, add a small amount, reduce the dry by the same calories and watch stools. Do it over about a week. Introduce one change at a time, so that if there is an upset, you know the cause. Keep the first few weeks in a new home steady: the same food the breeder used, then a slow change if your vet agrees. Do not mix many foods at once, and avoid sudden swaps.

A sample day mixing wet and dry for a 5 kg puppy

A 5 kg puppy under 17 weeks needs 702 kcal. A mix of 30% wet and 70% dry gives 211 kcal from wet food (211 g at 1,000 kcal/kg) and 491 kcal from dry food (129 g at 3,800 kcal/kg). One way to divide the day:

Meal	Time	Food	Amount	kcal
1	07:00	Dry	32 g	122
2	11:00	Dry + wet	32 g + 70 g	122 + 70
3	15:00	Dry + wet	33 g + 70 g	125 + 70
4	19:00	Dry + wet	32 g + 71 g	122 + 71
Total		Dry 129 g + wet 211 g		702

The sums add up to the target, and the example shows why a quick tally is worth doing: it is easy to under- or over-feed by 10% without noticing. Work out each meal in the Dog Wet & Dry Food Calculator, and weigh the results.

Raw and home-prepared diets

Some owners prefer raw or home-prepared food for puppies. These diets need careful formulation for growth, and many online recipes are not balanced. If you are considering one, read our guide to raw feeding for puppies and talk to your vet or a veterinary nutritionist first.

Quick summary

Dry food is about 10% water and wet food about 75–80%, which changes grams and label percentages.
For 702 kcal, a 5 kg puppy needs about 185 g of 3,800 kcal/kg dry or 702 g of 1,000 kcal/kg wet.
Compare cost per 1,000 kcal, not price per kg.
When mixing, split the calories and do not add wet on top of a full dry portion.
Check the adequacy statement for growth, and ask your vet.
Use the Dog Wet & Dry Food Calculator for mixed feeding.

Frequently asked questions

Is wet or dry food better for puppies?

Neither is better by type. What matters is that the food is complete and balanced for growth, suits the puppy and fits your budget and routine.

How much wet food does a puppy need compared with dry?

Far more by weight, because wet food is mostly water. For 702 kcal, about 185 g of dry at 3,800 kcal/kg or 702 g of wet at 1,000 kcal/kg.

Can I mix wet and dry food?

Yes. Work out the calories for each so that the total matches the target, using the wet and dry calculator.

Which is cheaper?

Compare cost per 1,000 kcal, not price per kg. Wet food is usually dearer on that measure, but it depends on the products.

Does wet food help puppies drink enough?

It supplies water, but puppies still need fresh water available at all times.

Is dry food better for teeth?

Claims vary by product. Ask your vet about dental care for your puppy.

How should I store wet food?

Cover opened cans, keep them in the fridge and use them within the time on the label.

Sources

Reviewed by the CalcuPaw Veterinary Review Team

Last reviewed 18 Oct 2026 · Meet the review team · This guide is general information, not veterinary advice.