Caffeine Metabolism Calculator & Tracker
Log Caffeine Intake
Category
Product
Dose
Your Chronotype
Your natural tendency to fall asleep and wake up at certain times can affect your sensitivity to caffeine.
Reported Metabolism Speed
How quickly do you feel the effects of caffeine wearing off? This helps personalize the half-life calculation.
Body Weight
Body weight can affect the distribution and metabolism of caffeine in the body.
Do you smoke regularly?
Do you use hormonal contraceptives?
Estrogen-based contraceptives can nearly double the half-life of caffeine.
Personalized Caffeine Half-Life: Your metabolism isn鈥檛 a constant. Factors like body weight, chronotype, and metabolism speed determine how long a cup of coffee stays in your system. We use these variables to calculate your personal caffeine decay curve.
Metabolism Boosters & Blockers: External factors can drastically change your results. Smoking can speed up caffeine clearance by up to 50%, while hormonal contraceptives can nearly double its half-life. Our calculator adjusts the simulation in real-time based on your lifestyle choices.
Why cigarettes steal your caffeine high