Tylenol Dosage Calculator
Calculate the appropriate Tylenol (acetaminophen) dosage for children and adults based on weight and age. This calculator provides standard dosage recommendations for safe medication administration.
How to Use This Calculator
- Enter the person's weight and select the appropriate unit
- Enter the person's age in years
- Select the Tylenol formulation you have available
- Adjust the fever severity slider if needed
- Click Calculate to see the recommended dosage
- Optional: Check the box to include a dosing schedule for the next 24 hours
Formula Used
Dosage (mg) = Weight (kg) × 10-15 mg/kg
Where:
- Weight (kg) = Patient's weight in kilograms
- 10-15 mg/kg = Standard pediatric dosage range for acetaminophen
- For high fever: Use 15 mg/kg (upper range)
- For mild fever: Use 10 mg/kg (lower range)
- Maximum daily dose = 75 mg/kg or 4,000 mg (whichever is less)
Example Calculation
Real-World Scenario:
A parent needs to determine the correct dose of Tylenol for their 6-year-old child who weighs 45 lbs and has a moderate fever.
Given:
- Weight = 45 lbs (20.4 kg)
- Age = 6 years
- Formulation = Children's Liquid (160mg/5mL)
- Fever Severity = Moderate (12.5 mg/kg)
Calculation:
Dosage (mg) = 20.4 kg × 12.5 mg/kg = 255 mg
Volume (mL) = 255 mg ÷ (160 mg/5 mL) = 7.97 mL
Result: Administer 8.0 mL of Children's Tylenol every 4-6 hours as needed for fever.
Why This Calculation Matters
Practical Applications
- Ensures safe and effective pain relief
- Prevents accidental overdose of acetaminophen
- Provides accurate dosing for different formulations
Key Benefits
- Reduces risk of liver damage from incorrect dosing
- Helps manage fever and discomfort effectively
- Provides guidance for proper medication administration
Common Mistakes & Tips
Frequently Asked Questions
References & Disclaimer
Medical Disclaimer
This calculator is for informational purposes only and does not replace professional medical advice. Always consult with a healthcare provider before administering medication, especially for children. The dosage recommendations provided are based on standard guidelines but may not be appropriate for everyone. This calculator does not account for specific medical conditions, allergies, or other medications that may affect dosing.
References
- Tylenol Official Dosing Charts - Manufacturer's official dosing guidelines for all Tylenol products
- American Academy of Pediatrics - Pediatric medication guidelines and fever management recommendations
- CDC Acetaminophen Safety Guidelines - Safety information and proper use of acetaminophen
Accuracy Notice
This calculator provides general dosage recommendations based on weight and standard guidelines. It does not account for individual health conditions, allergies, or other medications that may affect dosing. Always read medication labels and follow product instructions. If you have any questions about medication dosing, consult with a healthcare provider or pharmacist. In case of emergency, contact your local emergency services immediately.
About the Author
Kumaravel Madhavan
Web developer and data researcher creating accurate, easy-to-use calculators across health, finance, education, and construction and more. Works with subject-matter experts to ensure formulas meet trusted standards like WHO, NIH, and ISO.