About the project

A small tool for a practical question

CaffCalc was built and is maintained by Benjamin Dickman, an independent software developer, to make caffeine timing easier to understand than a table or rule of thumb.

Why CaffCalc exists

The project turns a transparent half-life equation into a timeline people can inspect and adjust. It is designed to answer “what if?” questions about dose and timing, not to diagnose a sleep problem or determine whether caffeine is safe for a particular person.

How the content is checked

Worked examples are generated from the same published formula used by the calculator. Health and sleep context is checked against linked systematic reviews, peer-reviewed research and government guidance. Benjamin is not a clinician, and CaffCalc does not claim medical review; that limitation is stated plainly because caffeine and sleep can affect health decisions.

Corrections and contact

Sources, dates and material updates are recorded on the relevant pages. Questions, corrections or source updates can be sent through benjamindickman.com.