Day 14 unlocks the Caffeine Calculator โ a simple tool that helps you plan your caffeine intake so you get great focus and still sleep well.
How it helps
Tell the calculator when you wake up and when you plan to sleep, choose the drinks you enjoy (espresso, brewed coffee, tea, energy drink), and it suggests when to take each drink so your caffeine peak doesn't overlap with sleep.
Core features
- Safe cutoff โ computes a conservative caffeine cutoff based on half-life so you avoid late-night sleep disruption.
- Drink presets โ pick common beverages (espresso, brewed, instant, tea, energy drinks) with sensible mg estimates.
- Even spacing โ distributes your chosen drinks across the available caffeine window at least 1 hour apart.
- Health warning โ highlights when daily caffeine approaches the 400mg recommended upper limit.
- Fast & private โ calculations are done client-side; nothing is sent to a server.
The tool is aimed at practical guidance, not medical advice. If you have health concerns or are sensitive to caffeine, treat these suggestions as conservative guidance and consult a healthcare professional if needed.
Try it now
Head to the Caffeine Calculator (Day 14) and try different combinations to find the schedule that fits your day. Perfect for focused work sprints, long coding sessions, and avoiding late-night energy crashes.
Enjoy your caffeine โ and sleep well. โ๐ด