Caffeine Limit & Safety Calculator
Calculate your maximum safe daily caffeine intake based on weight and heart rate sensitivity. FDA-compliant logic.
Safe Daily Limit (mg)
Approx. Cups of Coffee
Strategic Optimization
Caffeine Limit & Safety Calculator
Caffeine is the world's most consumed psychoactive substance. While it boosts cognitive agility, exceeding your physiological threshold can lead to systemic cortisol spikes and sleep architecture disruption.
FDA Safety Standards
For healthy adults, the FDA cites 400 milligrams a day (about 4 or 5 cups of brewed coffee) as an amount not generally associated with dangerous, negative effects. However, individual sensitivity varies wildly based on:
- Body Weight: High body mass can metabolize caffeine faster.
- Sensitivity: Some individuals are 'fast metabolizers' while others experience jitters from a single espresso.
What is in your drink? (Estimates)
- 8oz Brewed Coffee: 95mg
- Espresso Shot: 63mg
- Green Tea: 30-50mg
- Energy Drink (16oz): 160-300mg
Disclaimer
If you have an underlying heart condition, anxiety disorder, or are pregnant, your safe limit may be significantly lower (often zero or <200mg). Always verify with a medical professional.
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Disclaimer
This calculator is provided for educational and informational purposes only. It does not constitute professional legal, financial, medical, or engineering advice. While we strive for accuracy, results are estimates based on the inputs provided and should not be relied upon for making significant decisions. Please consult a qualified professional (lawyer, accountant, doctor, etc.) to verify your specific situation. CalculateThis.ai disclaims any liability for damages resulting from the use of this tool.