Big Boy — calories & nutrition

Official dataFamily Restaurants165 itemsLast verified 2026-08-22Source: official site
Publishes calories, protein, fat, carbs, saltP = protein · F = fat · C = carbs · S = salt
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All 165 items by name

Big Boy at a glance

Within genre
#30 lightest
of 50 chains in Family Restaurants
Protein 20 g+
7 options
while under 600 kcal
Half a day of salt
19%
3.75 g or more in one item

By the numbers

Items165
Average371kcal
Median286kcal
Range1–994kcal
Avg protein14.2g
Avg salt2.3g

A hand-kneaded-hamburg-and-salad-bar restaurant. The official allergen PDF includes energy, protein, fat, carbs and salt; hamburgs are listed per sauce and bar items per 100 g. Useful for seeing what the sauce and the set add.

Big Boy publishes nutrition information for 165 menu items, and we list all of it here. It sits on the more substantial side of its genre.

The lightest meal is “クルトン” at 462 kcal and the heaviest is “手ごねハンバーグ&カットステーキ160g” at 994 kcal. Even everyday options span 532 kcal.

Plan on adjusting portions if you want to keep the meal light.

“リブロースの厚切りローストビーフ280g(下記の2種のソース付)” carries the most protein at 76.0 g. Choices are limited, so it pays to decide before you order.

Some single items carry over half the Japanese daily salt target (7.5 g for adult men). Leaving the soup or skipping table condiments is the easiest way to bring that down.

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Related reading

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Okazaemon
Written by Okazaemon (runs tabecal)

Late twenties, works in sales. Lost 18 kg over three years while still eating out, by sticking to one rule: 20 g+ protein and 10 g or less fat per meal. Checks every chain’s officially published nutrition data daily. Not a nutrition professional — please consult a doctor or registered dietitian for medical decisions.

Where this data comes from

Source: Big Boy official website (www.bigboyjapan.co.jp). Figures on this page are based on the nutrition information Big Boy publishes; no estimates are used. We review what we list every day — last verified on 2026-08-22.