A standard Starbucks cold brew has about 205 mg of caffeine in a 16 oz (Grande) cup, which is roughly similar to or slightly less than a typical brewed hot coffee of the same size.

Quick Scoop

For in‑store Starbucks cold brew (not bottled or concentrate):

  • Tall (12 oz): roughly 150–155 mg caffeine (estimate based on Grande value).
  • Grande (16 oz): about 205 mg caffeine.
  • Venti (24 oz): often in the 270–300 mg range depending on ice and brew strength (approximate).

For bottled Starbucks Cold Brew (ready‑to‑drink):

  • 11 oz bottled cold brew: around 175–180 mg caffeine, depending on flavor.

For cold brew concentrate made at home from Starbucks bottles:

  • A typical 12–16 oz serving made from concentrate usually lands somewhere around 165–200 mg caffeine once diluted, though exact numbers vary by product and mix ratio.

Cold brew is smooth but still quite strong, so it’s easy to underestimate how much caffeine you’re getting, especially if you sip a Venti over a few hours.

Mini note on safety

Most healthy adults are generally advised to stay at or below about 400 mg of caffeine per day, so a Grande cold brew is about half that daily guideline in one drink.

Information gathered from public forums or data available on the internet and portrayed here.