Caffeine Poisoning Calculator
In this caffeine poisoning calculator, Enter your body weight kilograms or pounds. Enter total caffeine consumed in milligrams, such as coffee, energy drinks, and medications, and time/hours over which caffeine was consumed.
The calculator will display your caffeine toxicity level as a percentage of the lethal dose.
- Safe Zone (<50%): Your caffeine intake is safe.
- Caution Zone (50%-100%): You are approaching dangerous levels.
- Toxic Zone (>100%): Seek immediate medical attention.
If you weigh 70 kg and consume 500 mg of caffeine over a 4-hour period, the Caffeine Poisoning Calculator would process these measurements to determine your toxicity risk level, typically around 7.14 mg/kg.
Caffeine Poisoning Table
| Body Weight (kg) | Body Weight (lbs) | Mild Symptoms (mg) | Severe Symptoms (mg) | Lethal Dose (mg) |
|---|---|---|---|---|
| 50 | 110 | 100-200 | 400-600 | ~5,000 |
| 60 | 132 | 120-240 | 480-720 | ~6,000 |
| 70 | 154 | 140-280 | 560-840 | ~7,000 |
| 80 | 176 | 160-320 | 640-960 | ~8,000 |
| 90 | 198 | 180-360 | 720-1,080 | ~9,000 |
| 100 | 220 | 200-400 | 800-1,200 | ~10,000 |
Caffeine Toxicity Formulas
Toxicity Level (%) = (Caffeine Consumed (mg) / (Body Weight (kg) × 150)) × 100Caffeine per kg = Total Caffeine (mg) ÷ Body Weight (kg)Hourly Intake Formula:
Hourly Intake = Total Caffeine (mg) ÷ Time Period (hours)Risk Level Thresholds:
Safe Limit = 3 mg/kg
Mild Risk = 10 mg/kg
Moderate Risk = 15 mg/kg
Severe Risk = 20 mg/kg
Lethal Risk = 150 mg/kgA person weighs 75 kg and just finished his fourth cup of strong coffee, totaling 400 mg of caffeine:
Toxicity Level = (400 / (75 × 150)) × 100 = 3.56%How to calculate caffeine poisoning?
- First, add up all caffeine sources (coffee, tea, energy drinks, supplements)
- Note your current body weight in kilograms
- Multiply your weight by 150 (this represents the safety threshold)
- Divide your total caffeine intake by this number
- Multiply by 100 to get the percentage
If you’ve consumed 400 mg of caffeine and weigh 70 kg, your calculation would be:
400 mg ÷ 70 kg = 5.7 mg/kg caffeine load- 55 kg, 500 mg caffeine (500 / (55 × 150)) × 100 = 6.06%
- 85 kg, 600 mg caffeine (600 / (85 × 150)) × 100 = 4.71%
- 62 kg, 450 mg caffeine (450 / (62 × 150)) × 100 = 4.84%
- 90 kg, 800 mg caffeine (800 / (90 × 150)) × 100 = 5.93%
- 58 kg, 300 mg caffeine (300 / (58 × 150)) × 100 = 3.45%
What are Typical Caffeine Amounts?
- Coffee Cup: Regular: 95 mg, Serving Size: 8 oz
- Energy Drink: Regular: 80 mg, Serving Size: 8 oz
- Green Tea: Regular: 28 mg, Serving Size: 8 oz
- Soft Drinks: Regular: 40 mg, Serving Size: 12 oz
- Espresso Shot: Regular: 63 mg, Serving Size: 1 oz
What is Caffeine Toxicity?
Caffeine toxicity is a serious condition that occurs when caffeine intake exceeds the body’s ability to metabolize it safely. It’s like your body’s warning system – uniquely responding to excessive caffeine levels and consumption patterns.