Short answer: after a plain coffee you don't need to "make up" water; moderate coffee hydrates close to water. What raises your water need is sugar: syrupy lattes, mochas and Frappuccinos. Below are the values Suu uses for 27 Starbucks, Nevada and Greenwich drinks.
Get SuuPick a chain, drink and size: see how much counts as water in Suu, how much the sugar raises your daily goal, and the caffeine.
Suu's values for a medium (Grande, 16 fl oz / 473 ml) drink. "Counts as water" is the part added to your water goal; "Goal increase" is what the sugar adds to your daily water goal.
| Drink | Counts as water | Factor | Sugar → goal increase | Caffeine |
|---|---|---|---|---|
| Latte / Cappuccino / Flat White | 378 ml | 0.80 | 17 g → +170 ml | ~142 mg |
| Caffè Mocha | 307 ml | 0.65 | 35 g → +350 ml | ~118 mg |
| White Chocolate Mocha | 284 ml | 0.60 | 53 g → +530 ml | ~104 mg |
| Caramel Macchiato | 307 ml | 0.65 | 34 g → +340 ml | ~104 mg |
| Americano | 355 ml | 0.75 | 0 g → +0 ml | ~213 mg |
| Frappuccino | 237 ml | 0.50 | 64 g → +640 ml | ~71 mg |
| Vanilla Bean Frappuccino | 260 ml | 0.55 | 52 g → +520 ml | ~0 mg |
| Cold Brew (plain) | 355 ml | 0.75 | 0 g → +0 ml | ~237 mg |
| Vanilla Sweet Cream Cold Brew | 331 ml | 0.70 | 14 g → +140 ml | ~213 mg |
| Refresher (Cool Lime / Berry / Pink) | 378 ml | 0.80 | 20 g → +200 ml | ~0 mg |
| Chai Tea Latte / Matcha Latte | 331 ml | 0.70 | 42 g → +420 ml | ~95 mg |
| Drink | Counts as water | Factor | Sugar → goal increase | Caffeine |
|---|---|---|---|---|
| Spanish / Tiramisu Latte | 293 ml | 0.62 | 50 g → +500 ml | ~142 mg |
| Gingerbread / Toffee / Pumpkin Spice | 307 ml | 0.65 | 45 g → +450 ml | ~118 mg |
| Orange Espresso / Bumble Coffee | 331 ml | 0.70 | 24 g → +240 ml | ~213 mg |
| Iced Shaken Espresso (flavored) | 322 ml | 0.68 | 30 g → +300 ml | ~213 mg |
| KitKat / Lotus / Oreo Milkshake | 227 ml | 0.48 | 65 g → +650 ml | ~24 mg |
| Strawberry / Banana / Mango Frozen | 246 ml | 0.52 | 60 g → +600 ml | ~0 mg |
| Blue Matcha / Strawberry Matcha | 322 ml | 0.68 | 40 g → +400 ml | ~71 mg |
| Berry Hibiscus / Blue Lychee | 355 ml | 0.75 | 35 g → +350 ml | ~0 mg |
| Drink | Counts as water | Factor | Sugar → goal increase | Caffeine |
|---|---|---|---|---|
| Lotus / Biscoff Latte | 298 ml | 0.63 | 48 g → +480 ml | ~132 mg |
| Honey Bear / Salted Caramel Latte | 307 ml | 0.65 | 42 g → +420 ml | ~132 mg |
| Cortado / Flat White / Americano | 355 ml | 0.75 | 12 g → +120 ml | ~189 mg |
| Chocolate / Vanilla / Caramel Esfrappa | 246 ml | 0.52 | 55 g → +550 ml | ~71 mg |
| Pitaya Shake / Sky Drink / Watermelon | 260 ml | 0.55 | 52 g → +520 ml | ~0 mg |
| Cold Brew (plain) | 355 ml | 0.75 | 0 g → +0 ml | ~237 mg |
| Coconut Matcha / Coconut Pina | 322 ml | 0.68 | 38 g → +380 ml | ~71 mg |
| Hot Chocolate / Salep | 307 ml | 0.65 | 48 g → +480 ml | ~24 mg |
What research says, and why Suu still counts drinks cautiously.
Not in moderate amounts. In a study of 50 men who usually drank 3–6 cups a day, drinking 4 × 200 ml of coffee a day for three days made no difference to body water or hydration markers compared with the same amount of water.1 In a trial comparing different drinks, milk and an oral rehydration solution were retained longer than water, while coffee, tea and cola were not clearly different from water.2
Suu counts each drink with a hydration factor: how much of what you drink is added to your water goal. 200 ml of filter coffee × 0.8 = 160 ml of water. The factors are deliberately cautious; they account for strong or large coffees, caffeine sensitivity and sugar.
| Beverage | Factor | Counts as water per 200 ml | Visual |
|---|---|---|---|
| Water, sparkling water | 1.00 | 200 ml | |
| Herbal tea | 0.98 | 196 ml | |
| Green tea | 0.95 | 190 ml | |
| Black tea, milk, kefir | 0.90 | 180 ml | |
| Latte | 0.85 | 170 ml | |
| Filter coffee, cappuccino | 0.80 | 160 ml | |
| Americano, cold brew | 0.75 | 150 ml | |
| Turkish coffee | 0.70 | 140 ml | |
| Cola | 0.60 | 120 ml | |
| Espresso, Frappuccino | 0.50 | 100 ml | |
| Red Bull | 0.40 | 80 ml |
Suu raises your daily water goal by 100 ml for every 10 g of sugar in a drink. Caffeine does not raise it. A Grande Frappuccino has about 64 g of sugar, so your goal goes up by about 640 ml.
The European Food Safety Authority (EFSA) considers up to 400 mg of caffeine a day safe for healthy adults, no more than 200 mg at once, and no more than 200 mg a day in pregnancy.3 In Suu's data a Grande cold brew has about 237 mg.
The Starbucks, Nevada and Greenwich menus are in Suu's drink list (Premium). On the free plan you log water and sparkling water from the list, and other drinks by telling the assistant Suui (3 AI messages a day).
27 coffee chain drinks with their own factor, sugar and caffeine are in Suu's drink list (Premium). Water tracking and 3 AI messages a day are free.