Black Tea

Black Tea has approximately 47mg caffeine per 240ml. See the source, compare amounts per 100ml and add it to your caffeine half-life log.

Caffeine per serving

47mg / 240ml

Per 100ml

19.6mg

Source

Reference estimate

Amounts apply to the listed serving. Coffee and tea vary by recipe and preparation; branded products may vary by market. Prefer the label on your drink.