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Nutrition Breakdown

O-Bento Calories — Lowest to Highest

Browse calorie values for O-Bento menu items, with official nutrition where available and estimated calories for uncovered items. Updated August 2026.

Coverage

100%

Average Calories

298 kcal

Lowest Item

21 kcal

Highest Item

500 kcal

76 / 76 items resolved USDA database: 28 Estimated: 48

Lowest Calorie Items at O-Bento

Use this ranking to find lighter menu options quickly

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# Item Category Source Calories
1 Green Salad for salad & soup lover USDA 21 kcal
2 Miso Soup for salad & soup lover USDA 26 kcal
3 Vegetable Rice Soup for salad & soup lover USDA 27 kcal
4 Salmon & Vegetable Omelet for healthier breakfast lovers USDA 39 kcal
5 Cucumber Salad for salad & soup lover USDA 53 kcal
6 Noodle Soup (U-Don Or Soba) for rice & noodle lover USDA 53 kcal
7 Salmon Steak for daily special lunch lovers $10.99 USDA 60 kcal
8 Seaweed Salad for salad & soup lover USDA 70 kcal
9 Morning Combo for healthier breakfast lovers USDA 81 kcal
10 Grilled Tofu for healthier breakfast lovers USDA 94 kcal
11 Tofu Steak for daily special lunch lovers $10.99 USDA 94 kcal
12 Edamame for salad & soup lover USDA 106 kcal
13 Curry Rice for rice & noodle lover USDA 116 kcal
14 Teriyaki for rice & noodle lover USDA 126 kcal
15 Chi Ra Shi With Spicy Sauce for rice & noodle lover USDA 133 kcal
16 Beef Bi Bim Bob With Spicy Sauce for rice & noodle lover USDA 142 kcal
17 Summer Combo Roll for fusion taster USDA 147 kcal
18 Fall Combo Roll for fusion taster USDA 150 kcal
19 Winter Combo Roll for fusion taster USDA 150 kcal
20 Seafood Salad for salad & soup lover USDA 190 kcal
21 Vegetable Tofu Soup for salad & soup lover Estimated 220 kcal
22 Bamboo Party Tray (2 - 3) for party tray lover USDA 232 kcal
23 Pine Party Tray (3 - 4) for party tray lover USDA 232 kcal
24 Vegetable Party Tray for party tray lover USDA 232 kcal
25 Fried Chicken, Salmon Or Seafood for rice & noodle lover USDA 234 kcal
26 Fried Seafood Platter for daily special lunch lovers $10.99 USDA 234 kcal
27 Spicy Chicken for daily special lunch lovers $10.99 USDA 253 kcal
28 Eel Don Bu Ri for rice & noodle lover USDA 273 kcal
29 Alaskan Roll for roll lover Estimated 390 kcal
30 Asparagus Roll for vegetarians Estimated 390 kcal
Nutrition sync is temporarily paused Missing official items: 48

Highest Calorie Items

Top calorie-dense picks based on current nutrition data

Korean Boneless Barbeque

for daily special lunch lovers $10.99 500 kcal

Alaskan Roll

for roll lover 390 kcal

Asparagus Roll

for vegetarians 390 kcal

Atlantic Ocean Roll

for special roll lover (8 pc) $10.99 390 kcal

Avocado & Asparagus Roll

for vegetarians 390 kcal

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How Estimated Calories Are Calculated

When official nutrition is unavailable, calorie values are estimated using menu-item keywords and then adjusted by portion size. These values are directional for comparison, not medical nutrition advice.

  • Base estimate: item-name tokens (for example burger, fries, salad, pizza, shake) map to baseline calorie ranges.
  • Portion weighting: ounce and gram values adjust the estimate (about 8 oz = 1.0x, about 230 g = 1.0x), then the value is capped within a safe range.
  • Size modifiers: small/kids items apply a lower multiplier, while large/xl/family/double items apply a higher multiplier.
  • Final output: estimates are rounded to whole calories and shown as Estimated in the source column.

O-Bento Calories — Frequently Asked Questions

Questions about calorie values, estimates, and nutrition coverage.

How many O-Bento items have calorie data?
O-Bento currently has calorie values for 76 of 76 menu items (100% coverage). We first use official nutrition sources when available, then apply estimation fallback for unresolved items.

What is the lowest-calorie item at O-Bento?
The lightest item currently tracked is Green Salad at approximately 21 kcal. Use the ranked table to find other low-calorie meal choices.

Are O-Bento calorie values official or estimated?
This page uses a hybrid model: 28 items use USDA database estimates, while 48 items are algorithmic estimates. Both are directional for comparison, not medical guidance.

Where can I compare calories and prices together?
Use the O-Bento full menu prices page for price-focused browsing and the cheapest menu items page for budget picks. This calories page is built for nutrition-first filtering.

How to Use This Calories Page

Use this page to compare low-calorie and high-calorie items quickly before ordering. Official values are used where available, and estimated values fill the coverage gap for broad menu discovery.

Estimated values are directional and may vary by location, preparation style, and serving size. For strict dietary planning, cross-check with the official restaurant nutrition statement when available.