Boost Juice · Choc
King William ChocolateBoost Juice calories & macros
A Boost Juice King William Chocolate (Medium) has 333 calories (1,393 kJ), with 13.6 g protein, 4.9 g fat and 56.9 g carbs per serve. That is about 16% of the 8,700 kJ daily intake used on Australian food labels.
C4.1 g protein per 100 kcal - average protein density on Macro Menu's S to F scale
Open in the Macro Menu appAll Boost Juice items
Full nutrition (Medium)
| Per serve | Amount |
|---|---|
| Energy | 1,393 kJ (333 kcal) |
| Protein | 13.6 g |
| Fat, total | 4.9 g |
| - saturated | 3.1 g |
| Carbohydrate | 56.9 g |
| - sugars | 50.2 g |
| Sodium | 245 mg |
As published by Boost Juice.
King William Chocolate sizes and options
| Option | kcal | kJ | Protein g | Fat g | Carbs g | Sat fat g | Sugars g | Sodium mg |
|---|---|---|---|---|---|---|---|---|
| Junior | 259 | 1,084 | 10.9 | 3.7 | 44.2 | 2.3 | 38.9 | 191 |
| Medium | 333 | 1,393 | 13.6 | 4.9 | 56.9 | 3.1 | 50.2 | 245 |
| Original | 437 | 1,828 | 18.3 | 6.4 | 74.4 | 4.1 | 66.2 | 334 |
Lowest: Junior at 259 kcal. Highest: Original at 437 kcal - a 178 kcal spread.
Customise it: what swaps change
Per-serve totals after a common change. Modifier figures are Macro Menu estimates unless Boost Juice publishes the component itself.
| Change | kcal | kJ | Protein g | Fat g | Carbs g |
|---|---|---|---|---|---|
| As sold | 333 | 1,393 | 13.6 | 4.9 | 56.9 |
| Add Whey Protein Booster (+45 kcal) | 378 | 1,582 | 23.6 | 5.4 | 57.9 |
| Add Immunity Booster (+10 kcal) | 343 | 1,435 | 13.6 | 4.9 | 58.9 |
| Add Chia Seeds (+50 kcal) | 383 | 1,602 | 15.6 | 7.9 | 60.9 |
| No Yoghurt (-60 kcal) | 273 | 1,142 | 10.6 | 3.9 | 47.9 |
| Make Dairy Free (Alt Milk) (-20 kcal) | 313 | 1,310 | 11.6 | 4.4 | 53.9 |
How it compares with other Boost Juice choc
Of the 5 choc on the Boost Juice menu, King William Chocolate ranks 2nd of 5 for protein and is the lowest in calories. The category average is 378 kcal, so this one is below average by 45 kcal.
| Item | kcal | kJ | Protein g | Fat g | Carbs g |
|---|---|---|---|---|---|
| King William Chocolate (3 options) | 333 | 1,393 | 13.6 | 4.9 | 56.9 |
| Coffee Dream (3 options) | 350 | 1,464 | 14.0 | 4.2 | 62.4 |
| Raspberry Ripe (3 options) | 374 | 1,565 | 12.7 | 5.6 | 69.1 |
| Cookies & Creme (3 options) | 384 | 1,607 | 11.9 | 6.6 | 68.9 |
Sorted by calories, showing the items either side of this one. See every Boost Juice choc item.
Quick answers
How many calories are in a Boost Juice King William Chocolate?
King William Chocolate at Boost Juice ranges from 259 to 437 calories depending on the option. The Medium is 333 kcal (1,393 kJ).
How much protein is in Boost Juice's King William Chocolate?
13.6 g of protein in the Medium, which works out to 4.1 g per 100 kcal - rated C (average) for protein density on Macro Menu.
How many kJ is that?
1,393 kJ. Australian menus list kilojoules; divide by 4.184 to get calories. 1,393 kJ is roughly 16% of an 8,700 kJ day.
Is it a lower-calorie choice at Boost Juice?
Yes - it is the lowest-calorie of the 5 choc at Boost Juice. The next lightest is Coffee Dream at 350 kcal, and the highest-protein is Coffee Dream with 14.0 g.
More Boost Juice choc
Coffee Dream350 kcal · 14.0 g protein
Raspberry Ripe374 kcal · 12.7 g protein
Cookies & Creme384 kcal · 11.9 g protein
Bananas For Choc450 kcal · 8.5 g proteinBoost Juice full menuHighest protein at Boost JuiceLowest calorie at Boost JuiceOther restaurants
Source: Boost Juice Allergens & Nutritional Information guide (BNIPS26-3, April 2026), with the live menu from Boost's own ordering API (boostjuice.redcatcloud.com.au), per serve as sold. Last checked against the live menu on 8 September 2026. Every source.