Iced Black Tea — Caffeine

Caffeine estimate for Iced Black Tea: 30 mg (grande).

Caffeine estimate for Iced Black Tea: 30 mg (grande).

Caffeine by size (estimates)

SizeCaffeine
Tall25mgSize page
Grande30mgSize page
Venti40mgSize page
Trenta50mgSize page

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Last updated: July 13, 2026. All nutrition values are estimates and this site is not affiliated with Starbucks Corporation.