Terms of use

Informational use only

Caffeine Clock provides general reference information about caffeine content and pharmacokinetics. It is not medical advice, and calculator outputs are estimates from population-average models — your individual response may differ materially. Consult a qualified clinician for decisions affecting your health, including during pregnancy or while taking medications.

Data accuracy

Drink values are sourced from USDA FoodData Central and manufacturer labels and are believed accurate as of their last verification, but recipes change without notice. Verify critical values against the current label.

Acceptable use

The tools (including the WebMCP endpoints) are free to use with reasonable volume. Automated abuse, scraping the tools as a bulk data feed, or misrepresenting the data as your own database is not permitted — link to the source pages instead.

Liability

The site is provided "as is" without warranty. We are not liable for choices made based on calculator outputs or database values.

Effective 2026-08-27.