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
CaffCalc helps you try out everyday questions: what if I move my last coffee earlier, choose a smaller drink or switch to decaf? The timeline shows an estimate you can adjust. It can’t diagnose a sleep problem or decide whether caffeine is safe for you.
How the content is checked
The examples use the calculator’s formula, while health and sleep information links to published research and official guidance. Benjamin is a developer, not a clinician. The articles haven’t had an independent medical review, so please use them as background reading rather than personal medical advice.
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.