There are various types of tuna out there, including canned with added ingredients such as oil or herbs, sandwich mixes, or just plain fresh tuna steaks. So it can become a little confusing when you need to work out weights and calories for your meal.
In this article, I’ll be providing charts and data for everything you need to know about various kinds of tuna weights and nutrition, so you can find the exact information you need.
Information in this Article
This page contains lots of information and data, so if you’re looking for something specific relating to this topic, you might find it helpful to use the links below to skip to the section you need:
- Canned Tuna Weights, Calories & Nutrition
- Canned Tuna Serving Sizes
- Canned Tuna Weights & Calories
- Canned Tuna With Added Ingredients Calories
- Canned Tuna Nutritional Information
- Fresh Tuna Weights, Calories & Nutrition
- How Much Does a Tuna Steak Weigh
- Fresh Tuna Calories
- Fresh Tuna Nutrition
- Tuna Calorie Calculator
- More Tuna Weights, Servings & Nutrition FAQs
Canned Tuna Weights, Calories & Nutrition
In the sections below, I’ll go through everything you need to know about canned tuna, weights, and nutrition, including tuna canned in oil and added ingredients such as mayo.
Figures are based on official data based on individual brands’ nutrition and data from the USDA.
Canned Tuna Serving Sizes
Recommended serving sizes of tuna can vary slightly depending on where you look and the size of the pack.
As a general rule, a serving of canned tuna is the drained weight of half a standard 5oz can of tuna, which in the USA is equal to 2oz or 57g.
Servings vary slightly depending on which country you buy tuna and whether metric or imperial weights are used (oz or g). Below are the standard serving sizes for the USA in imperial weights and the UK, which uses metric weights.
USA Can & Serving Sizes
A standard US can of tuna weighs 5oz (142g), including added liquid, usually water, oil, or brine. The average drained tuna weight of a 5oz can is 4oz (113g), and half a can of this size weighs 2oz (57g) which is classed as one serving.
UK Can & Serving Sizes
A standard metric can of tuna sold in the UK weighs 145g (5.4oz), including added liquid, with an average drained weight of 102g (3.6oz). A serving from a 145g can of tuna is equal to half a can and weighs 51g (1.9oz).
Some brands have also started to produce ‘no drain’ canned tuna, which weighs 110g and 55g per serving or half a can.
Canned Tuna Weights & Calories
The table below shows conversion weights and calories for various servings of canned tuna.
Calories are based on official data from the USDA (see link below) for tuna canned in water, but they can vary slightly between brands. Please note that calorie values will be higher if your tuna is canned in oil, so you might want to skip to the next section to find the information you need.
|Serving Weight of Canned Tuna||Conversion Weight||Calories (In kcal) 1.16|
|2oz (half a drained US can)||57g||66kcal|
|4oz (whole drained US can)||113g||131kcal|
|51g (half a drained UK can)||1.9oz||59kcal|
|102g (half a drained UK can)||3.6oz||118kcal|
|25g of canned tuna||0.9oz||29kcal|
|50g of canned tuna||1.8oz||58kcal|
|100g of canned tuna||3.5oz||116kcal|
|125g of canned tuna||4.4oz||145kcal|
|150g of canned tuna||5.3oz||174kcal|
|175g of canned tuna||6.2oz||203kcal|
|200g of canned tuna||7.1oz||232kcal|
|1oz of canned tuna||28g||32kcal|
|3oz of canned tuna||85g||99kcal|
|4oz of canned tuna||113g||131kcal|
|5oz of canned tuna||142g||165kcal|
For more specific weight and calorie information for any serving, you might like to use the calculator at the bottom of this page.
Canned Tuna With Added Ingredients Calories
The table below shows the calories for a serving (half a can of tuna) with some added ingredients, often served with tuna to help you work out the calories per serving.
These figures are based on averages and calories taken from top brand nutritional information; please note that calories may vary slightly for each brand of product.
|Canned Tuna Type & Serving Size||Calories Per Serving|
|Tuna Canned in Sunflower oil (drained) / 56g (2oz)||110kcal|
|Tuna Canned in Olive oil (drained) / 56g (2oz)||115kcal|
|56g (2oz) Tuna with 13g Full-Fat Mayo||156kcal|
|56g (2oz)Tuna with 15g Light Mayo||101kcal|
|56g (2oz) Tuna 15g Full-Fat Ranch||131kcal|
|56g (2oz) Tuna with 15g Light Ranch||96kcal|
|56g (2oz) Tuna with 15g Salad Cream||111kcal|
Canned Tuna Nutritional Information
The table below shows the high-level nutritional information for typical canned tuna, canned in spring water and without salt.
As you can see, tuna is a carb-free, low-fat food that is high in protein, making it an excellent choice for those on a low-carb diet or wanting to increase their protein intake.
|Nutrition Type||Amount Per 100g|
|Of which are sugars||0g|
Fresh Tuna Weights, Calories & Nutrition
Moving onto fresh tuna weights, calories, and nutrition for raw or fresh tuna steaks. The data in the sections below are based on official USDA data, but figures can vary very slightly depending on the tuna variety.
How Much Does a Tuna Steak Weigh?
An average-sized tuna steak that you can buy from larger stores weighs around 100-120g per steak, although you can get heavier or thicker cut steaks from fishmongers.
The USDA confirms that a boneless raw tuna weighs 16g per one-inch square, so if you don’t have scales, you can work out the approximate weight of a tuna steak by measurement instead.
A serving of tuna is considered as one steak per person or 100-120g raw weight. If you’re using the cooked weight to work out calories, keep in mind that fresh tuna will shrink by around 25% of the original weight once cooked.
Fresh Tuna Calories
The table below shows the calories per tuna steak for various weights; this is based on USDA calorie data using the raw tuna weight.
|Fresh Tuna Steak Weight||Conversion Weight||Calories Per Serving|
Fresh Tuna Nutrition
Below is the nutritional information for fresh tuna; just like canned tuna, the fresh version contains no carbs, is low in fat, and is high in protein.
|Nutrition Type||Amount per 100g of Fresh Tuna|
|Of which are sugars||0g|
Tuna Calorie Calculator
The calculator below will help you work out the calorie content for various types of tuna and any serving size.
Select your tuna type and input your tuna weight to begin:
More Tuna Weights, Servings & Nutrition FAQs
An average-sized tuna steak which is generally sold in a pack of two weighs around 100-120g per steak, although you can get thicker steaks that weigh more.
The average weight of a standard can of drained tuna is 102-113g of tuna. Some brands now produce no-drain tuna which will yield around 110g of tuna meat per standard can.
I hope this article’s information has helped you find what you were looking for. You might also like the following related posts:
To ensure the nutritional information used in this article is accurate, I have used data from the USDA; the links below contain the source information in case you need it: