Boost Juice · Secret Menu
Water-Mellow MangoBoost Juice calories & macros
A Boost Juice Water-Mellow Mango (Medium) has 302 calories (1,264 kJ), with 4.9 g protein, 8.9 g fat and 49.9 g carbs per serve. That is about 15% of the 8,700 kJ daily intake used on Australian food labels.
D1.6 g protein per 100 kcal - poor protein density on Macro Menu's S to F scale
Open in the Macro Menu appAll Boost Juice items
Water-Mellow Mango sizes and options
| Option | kcal | kJ | Protein g | Fat g | Carbs g |
|---|---|---|---|---|---|
| Junior | 234 | 979 | 3.7 | 7.0 | 38.5 |
| Medium | 302 | 1,264 | 4.9 | 8.9 | 49.9 |
| Original | 386 | 1,615 | 6.1 | 12.0 | 62.6 |
Lowest: Junior at 234 kcal. Highest: Original at 386 kcal - a 152 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 | 302 | 1,264 | 4.9 | 8.9 | 49.9 |
| Add Whey Protein Booster (+45 kcal) | 347 | 1,452 | 14.9 | 9.4 | 50.9 |
| Add Immunity Booster (+10 kcal) | 312 | 1,305 | 4.9 | 8.9 | 51.9 |
| Add Chia Seeds (+50 kcal) | 352 | 1,473 | 6.9 | 11.9 | 53.9 |
| No Yoghurt (-60 kcal) | 242 | 1,013 | 1.9 | 7.9 | 40.9 |
| Make Dairy Free (Alt Milk) (-20 kcal) | 282 | 1,180 | 2.9 | 8.4 | 46.9 |
How it compares with other Boost Juice secret menu
Of the 16 secret menu on the Boost Juice menu, Water-Mellow Mango ranks 8th of 16 for protein and is the 5th lowest in calories. The category average is 293 kcal, so this one is above average by 9 kcal.
| Item | kcal | kJ | Protein g | Fat g | Carbs g |
|---|---|---|---|---|---|
| Lemon Crush (3 options) | 154 | 644 | 2.3 | 0.7 | 34.6 |
| Berry Remedy (3 options) | 171 | 715 | 1.7 | 0.5 | 38.9 |
| Bangin' Blueberry (3 options) | 276 | 1,155 | 4.7 | 2.9 | 60.4 |
| Water-Mellow Mango (3 options) | 302 | 1,264 | 4.9 | 8.9 | 49.9 |
| Fine Pine Mango (3 options) | 306 | 1,280 | 6.4 | 3.6 | 60.5 |
| Razzberry Mango (2 options) | 306 | 1,280 | 5.6 | 3.4 | 62.2 |
| Janine's Fave (3 options) | 307 | 1,284 | 6.0 | 3.8 | 61.7 |
Sorted by calories, showing the items either side of this one. See every Boost Juice secret menu item.
Quick answers
How many calories are in a Boost Juice Water-Mellow Mango?
Water-Mellow Mango at Boost Juice ranges from 234 to 386 calories depending on the option. The Medium is 302 kcal (1,264 kJ).
How much protein is in Boost Juice's Water-Mellow Mango?
4.9 g of protein in the Medium, which works out to 1.6 g per 100 kcal - rated D (poor) for protein density on Macro Menu.
How many kJ is that?
1,264 kJ. Australian menus list kilojoules; divide by 4.184 to get calories. 1,264 kJ is roughly 15% of an 8,700 kJ day.
Is it a lower-calorie choice at Boost Juice?
Within Boost Juice secret menu it is the 5th lowest of 16. The lowest-calorie option in that category is Pure Eden at 119 kcal, and the highest-protein is Cookie Dough with 8.2 g.
More Boost Juice secret menu
Fine Pine Mango306 kcal · 6.4 g protein
Razzberry Mango306 kcal · 5.6 g protein
Janine's Fave307 kcal · 6.0 g protein
Lychee Charm311 kcal · 4.4 g protein
Strawbs Mango314 kcal · 6.0 g protein
Tropical Storm316 kcal · 6.5 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.