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Tuna Onigiri Calories
Popular Japanese rice ball with tuna filling and nori
CALORIES
GI
POTASSIUM
FIBER
Tuna Onigiri Nutrition Facts
Selected: 100 g
175
KCAL / 100G
Carbs
31g
· 70%
Protein
7.5g
· 17%
Fat
2.5g
· 13%
Fiber
1.2g
Tuna Onigiri Vitamins & Minerals
Vitamins
B12
0.6µg · 25% DV
B3
2.1mg · 13% DV
B6
0.13mg · 8% DV
B5
0.35mg · 7% DV
Minerals
Selenium
7µg · 13% DV
Sodium
260mg · 11% DV
Phosphorus
65mg · 9% DV
Iodine
12µg · 8% DV
Tuna Onigiri Glycemic Index
GLYCEMIC INDEX
GLYCEMIC LOAD
Accounts for portion size — a more realistic measure than GI alone.
Is Tuna Onigiri Processed?
NOVA 3
Processed
1. Unprocessed
2. Minimally Processed
3. Processed
4. Ultra-Processed
NOVA classifies foods into 4 groups by industrial processing. NOVA 1 (unprocessed) is the healthiest.
Does Tuna Onigiri Contain Allergens?
Contains these allergens:
Which Diets Is Tuna Onigiri Good For?
Vegan
— Not suitable
Vegetarian
— Not suitable
Gluten-Free
— Not suitable
Dairy-Free
— Not suitable
Mediterranean
✓ Suitable
Paleo
— Not suitable
Whole30
— Not suitable
DASH
— Not suitable
Keto
— Not suitable
Low FODMAP
— Not suitable
Tuna Onigiri Fat Profile
SATURATED
0.6g
MONOUNSATURATED
0.7g
POLYUNSATURATED
0.18g
Omega 6:3 ratio 0.2:1
Below the ideal 4:1 — a good omega balance.
Foods Similar to Tuna Onigiri
Tuna Onigiri — Frequently Asked Questions
How long can tuna onigiri sit at room temperature?
Because it contains fish and cooked rice, tuna onigiri should not be left at room temperature for long. Eat it soon after purchase, or refrigerate it if you will not eat it right away.
How should tuna onigiri be stored in the fridge?
For unopened products, follow the storage instructions on the label. Once opened, or if homemade, keep it in a sealed container in the refrigerator and eat it by the next day for the safest quality.
Can tuna onigiri be frozen?
It can be frozen, but the rice may become drier or firmer after thawing. Tuna fillings made with mayonnaise can also release water, so it is usually best enjoyed fresh.
Should tuna onigiri be eaten cold or heated?
Most tuna onigiri is intended to be eaten cold. If you prefer it warm, remove the nori first and heat the rice gently, as overheating can make the rice tough and intensify the fish aroma.
Why does tuna onigiri sometimes become dry or hard?
Rice changes texture as it cools because its starches firm up. Avoid leaving it unwrapped, do not serve it ice-cold when possible, and eat it fresh for the best texture.
What goes well with tuna onigiri?
Cucumber, edamame, seaweed salad, or vegetable miso soup are good pairings. Adding vegetables and soup makes the meal more satisfying, while using soy sauce sparingly helps limit extra sodium.
Is tuna onigiri better before or after a workout?
Its rice base can make it a convenient carbohydrate option before exercise, though people with sensitive stomachs should avoid eating it immediately beforehand. After training, it may be more balanced with an additional protein food such as yogurt or a milk-based drink.
Is tuna onigiri the same as sushi?
No. Onigiri is usually hand-shaped rice, often triangular or round, with a filling, while sushi refers to a broader group of dishes made with seasoned rice. Tuna onigiri does not need to contain raw fish.
Is tuna onigiri always a healthy lunch choice?
It can be convenient, but it is a processed product and recipes may include mayonnaise, salty sauces, or additives. Pair it with vegetables and an unsweetened drink, and check the ingredient list when choosing packaged versions.
Who should be cautious with tuna onigiri?
Anyone with a fish allergy should avoid it. Pregnant people, young children, and those who eat tuna frequently may also want to consider their overall tuna intake because tuna can contain mercury.
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Nutrition data compiled from USDA FoodData Central and scientific sources.