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Determine how much coffee you can safely drink based on your body weight and caffeine sensitivity. Our calculator provides personalized recommendations for daily caffeine intake and helps you compare caffeine content across 30+ popular coffee drinks and beverages.
Last updated: January 26, 2026
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Black Coffee (8 oz): 95mg caffeine per serving
Recommended Daily Caffeine
420 mg
Based on your weight and sensitivity level
Your Drink Caffeine
95 mg per serving
1 portion(s) = 95 mg total
Maximum Safe Portions
4 portions
Maximum recommended daily intake of this drink
💡 Remember:
The FDA recommends a maximum of 400mg of caffeine per day for healthy adults. Individual tolerance may vary. Listen to your body and adjust accordingly.
Our coffee calculator makes it easy to determine your safe daily caffeine intake. Follow these simple steps:
Scenario: A 70kg person with average sensitivity wants to drink black coffee
You can handle large amounts of caffeine without experiencing jitters, anxiety, or sleep disruption. Even multiple strong coffees may not affect you significantly. Your body metabolizes caffeine efficiently.
You have above-average tolerance to caffeine. You can enjoy several cups of coffee throughout the day without negative side effects. Moderate caffeine consumption works well for you.
You have typical response to caffeine. Most people fall into this category. You can enjoy moderate amounts of coffee but may experience side effects if you exceed recommended limits.
You're more sensitive to caffeine than average. Even moderate amounts may cause jitters, anxiety, or affect your sleep. You should limit your coffee intake and avoid caffeine late in the day.
You're highly sensitive to caffeine. Small amounts can cause significant effects including anxiety, rapid heartbeat, or sleep disruption. Consider decaf options or limit to one small cup per day, preferably in the morning.
Calculating caffeine content helps you stay within safe limits. Here's how to do it:
If you only have volume measurements, you can estimate using the assumption that 1ml ≈ 1g for coffee:
Total caffeine = (Volume in ml / 100) × Caffeine per 100g
Note: This method is less accurate because coffee density varies. Weight measurements are more precise.
Regular Coffee:
Coffee Shop Drinks:
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