A grande (16 oz) Starbucks Flat White has 195mg of caffeine, per the Starbucks nutrition listing (menu). That works out to 12.2mg per fluid ounce and about 2.1 cups of 8 oz brewed coffee. It takes about 2.1 grandes to reach the 400mg daily amount the FDA cites for healthy adults.
Caffeine by size
| Size | Volume | Caffeine |
|---|---|---|
| Short | 8 oz | 130mg |
| Tall | 12 oz | 130mg |
| Grande | 16 oz | 195mg |
| Venti | 20 oz | 195mg |
Per-size figures match Caffeine Informer's compiled Starbucks guide (source), which mirrors the Starbucks nutrition listing.
The grande against the standards
| Drink | Serving | Caffeine | Per fl oz | Servings to reach 400mg |
|---|---|---|---|---|
| Starbucks Flat White (grande) | 16 oz grande | 195mg | 12.2mg | 2.1 |
| Brewed coffee | 8 oz cup | 95mg | 11.9mg | 4.2 |
| Espresso | 1 oz shot | 63mg | 63mg | 6.3 |
How the number behaves
The flat white breaks the 75mg-per-shot pattern because Starbucks builds it with ristretto shots, shorter pulls that the menu lists at different caffeine values. The result outguns a latte at every size: 130mg in a tall against the latte's 75mg, and 195mg in a grande against 150mg. It is the strongest milk-forward espresso drink on the standard menu.
Compare it
- Starbucks Flat White vs brewed coffee: the caffeine numbers
- Starbucks Flat White vs Red Bull: the caffeine numbers
- Starbucks Flat White vs Monster: the caffeine numbers
- Every Starbucks Flat White caffeine comparison
- The verified caffeine database
For context, the FDA cites 400mg of caffeine a day as an amount generally not associated with negative effects in healthy adults. Tolerance and health vary, so treat these numbers as information, not advice.
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Gear from this guide
FAQ
How much caffeine is in a flat white at Starbucks? 195mg in a grande (16 oz), per the Starbucks nutrition listing. Sizes run 130mg short, 130mg tall, 195mg grande, and 195mg venti.
Is a Starbucks flat white stronger than regular coffee? Per drink, yes: 195mg in a grande versus 95mg in an 8 oz cup of brewed coffee. Per ounce it is also higher: 12.2mg versus 11.9mg.
How many grande flat whites reach 400mg of caffeine? About 2.1 of the 16 oz grande servings reach the 400mg daily amount the FDA cites for healthy adults.
Sources: the Starbucks Flat White figures (195mg grande and the per-size ladder) are the Starbucks published nutrition listing (source), corroborated by Caffeine Informer's Starbucks guide (source). Brewed coffee (95mg per 8 oz) and espresso (63mg per 1 oz) reference values are from USDA FoodData Central.
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