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Caffeine Half-Life Calculator

Calculate exactly when a dose will clear from your system. Default half-life is 5 hours, but can range from 2 to 10 hours depending on CYP1A2 genetics.

JavaScript Required: This interactive calculator requires JavaScript to generate your specific decay curve.

Static Baseline Data:
For a standard 200mg dose with a 5-hour half-life:
- Hour 0: 200mg
- Hour 5: 100mg
- Hour 10: 50mg
- Hour 15: 25mg

Dose (mg)

Half-Life (Hours)

Protocol Links

Ensure you understand the underlying pharmacokinetics before acting on this data.

Guide: Understanding Half-Life
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