Calculate Daily Caffeine Intake

Body Weight (kg)

Your body weight in kilograms

Age (Years)

Your current age

Caffeine Sources (Enter quantities consumed today)

Coffee (8 oz cup) ~95mg caffeine per cup

Espresso (1 oz shot) ~63mg caffeine per shot

Tea (8 oz cup) ~26mg caffeine per cup

Energy Drink (8 oz) ~80mg caffeine per 8 oz

Soda/Cola (12 oz can) ~22mg caffeine per can

Dark Chocolate (1 oz) ~12mg caffeine per oz

Pre-Workout (1 scoop) ~200mg caffeine per scoop

Custom Source (mg) Enter caffeine amount in mg

Caffeine Sensitivity Low (I can drink coffee before bed) Normal (Average sensitivity) High (I get jittery easily)

Your personal caffeine sensitivity level

Medications/Health Conditions None Heart condition Pregnant/Breastfeeding Anxiety disorder Sleep disorders Other

Any conditions that may affect caffeine tolerance

Calculate Caffeine Intake Reset

About Caffeine

Caffeine is a natural stimulant found in coffee, tea, chocolate, and energy drinks. It affects the central nervous system and can improve alertness and focus.

Risk Categories:

• Low: 0-200mg
• Moderate: 200-400mg
• High: >400mg

Common Effects:

• Low Dose: Increased alertness, focus
• Moderate Dose: Improved performance, mood
• High Dose: Anxiety, jitteriness, insomnia
• Very High: Heart palpitations, nausea

Half-Life:

• • Average: 5-6 hours
• • Range: 1.5-9.5 hours
• • Affected by: age, medications, genetics

Timing Tips:

• • Avoid caffeine 6+ hours before bed
• • Peak effects: 30-60 minutes
• • Withdrawal symptoms: 12-24 hours