A to Z Resource Guide »

Medication Dosage Calculator

Also: Tylenol, Acetaminophen, Ibuprofen, Advil, Motrin, Zyrtec

Easily determine the right dose of acetaminophen (Tylenol) or ibuprofen (Motrin, Advil) for your child’s weight.

For Zyrtec, see this dosage guide. (Also listed under “Z” in the Resource Guide.)

For infants under 6 pounds, check with your doctor.

Child's WeightMedicationDose
6-11 lbsAcetaminophen Syrup 160 mg/5mL
(such as Children’s Tylenol Oral Suspension)
1.25 mL
12-17 lbsAcetaminophen Syrup 160 mg/5mL
(such as Children’s Tylenol Oral Suspension)
2.5 mL
18-23 lbsAcetaminophen Syrup 160 mg/5mL
(such as Children’s Tylenol Oral Suspension)
3.75 mL
24-35 lbsAcetaminophen Syrup 160 mg/5mL
(such as Children’s Tylenol Oral Suspension)
5 mL
36-47 lbsAcetaminophen Syrup 160 mg/5mL
(such as Children’s Tylenol Oral Suspension)
7.5 mL
48-59 lbsAcetaminophen Syrup 160 mg/5mL
(such as Children’s Tylenol Oral Suspension)
10 mL
60-71 lbsAcetaminophen Syrup 160 mg/5mL
(such as Children’s Tylenol Oral Suspension)
12.5 mL
72-95 lbsAcetaminophen Syrup 160 mg/5mL
(such as Children’s Tylenol Oral Suspension)
15 mL
24-35 lbsChewable Acetaminophen Tablets 160 mg
(such as Children’s Tylenol Chewable Tablets)
1 tablet
36-47 lbsChewable Acetaminophen Tablets 160 mg
(such as Children’s Tylenol Chewable Tablets)
1.5 tablets
48-59 lbsChewable Acetaminophen Tablets 160 mg
(such as Children’s Tylenol Chewable Tablets)
2 tablets
60-71 lbsChewable Acetaminophen Tablets 160 mg
(such as Children’s Tylenol Chewable Tablets)
2.5 tablets
72-95 lbsChewable Acetaminophen Tablets 160 mg
(such as Children’s Tylenol Chewable Tablets)
3 tablets
48-59 lbsAdult Acetaminophen Tablets 325 mg
(such as Tylenol Regular Strength)
1 tablet
60-71 lbsAdult Acetaminophen Tablets 325 mg
(such as Tylenol Regular Strength)
1 tablet
72-95 lbsAdult Acetaminophen Tablets 325 mg
(such as Tylenol Regular Strength)
1.5 tablets
96 lbs or moreAdult Acetaminophen Tablets 325 mg
(such as Tylenol Regular Strength)
2 tablets
12-17 lbsIbuprofen Infant Drops 50 mg/1.25 mL
(such as Infant’s Motrin Oral Suspension Drops)
1.25 mL
18-23 lbsIbuprofen Infant Drops 50 mg/1.25 mL
(such as Infant’s Motrin Oral Suspension Drops)
1.875 mL
24-35 lbsIbuprofen Infant Drops 50 mg/1.25 mL
(such as Infant’s Motrin Oral Suspension Drops)
2.5 mL
36-47 lbsIbuprofen Infant Drops 50 mg/1.25 mL
(such as Infant’s Motrin Oral Suspension Drops)
3.75 mL
48-59 lbsIbuprofen Infant Drops 50 mg/1.25 mL
(such as Infant’s Motrin Oral Suspension Drops)
5 mL
12-17 lbsIbuprofen Liquid 100 mg/5 mL
(such as Children’s Motrin Oral Suspension)
2.5 mL
18-23 lbsIbuprofen Liquid 100 mg/5 mL
(such as Children’s Motrin Oral Suspension)
4 mL
24-35 lbsIbuprofen Liquid 100 mg/5 mL
(such as Children’s Motrin Oral Suspension)
5 mL
36-47 lbsIbuprofen Liquid 100 mg/5 mL
(such as Children’s Motrin Oral Suspension)
7.5 mL
48-59 lbsIbuprofen Liquid 100 mg/5 mL
(such as Children’s Motrin Oral Suspension)
10 mL
60-71 lbsIbuprofen Liquid 100 mg/5 mL
(such as Children’s Motrin Oral Suspension)
12.5 mL
72-95 lbsIbuprofen Liquid 100 mg/5 mL
(such as Children’s Motrin Oral Suspension)
15 mL
96 lbs or moreIbuprofen Liquid 100 mg/5 mL
(such as Children’s Motrin Oral Suspension)
20 mL
48-59 lbsChewable Ibuprofen Tablets 100 mg
(such as Children’s Motrin Chewables)
2 tablets
60-71 lbsChewable Ibuprofen Tablets 100 mg
(such as Children’s Motrin Chewables)
2.5 tablets
72-95 lbsChewable Ibuprofen Tablets 100 mg
(such as Children’s Motrin Chewables)
3 tablets
96 lbs or moreChewable Ibuprofen Tablets 100 mg
(such as Children’s Motrin Chewables)
4 tablets
24-35 lbsChewable Ibuprofen Tablets 100 mg
(such as Children’s Motrin Chewables)
1 tablet
36-47 lbsChewable Ibuprofen Tablets 100 mg
(such as Children’s Motrin Chewables)
1.5 tablets
48-59 lbsAdult Ibuprofen Tablets 200 mg
(such as Motrin IB or Advil)
1 tablet
60-71 lbsAdult Ibuprofen Tablets 200 mg
(such as Motrin IB or Advil)
1 tablet
72-95 lbsAdult Ibuprofen Tablets 200 mg
(such as Motrin IB or Advil)
1.5 tablets
96 lbs or moreAdult Ibuprofen Tablets 200 mg
(such as Motrin IB or Advil)
2 tablets

Important Instructions

  • Always read and follow the label instructions.
  • Whenever possible, use the dosing device that came with the product. Syringes and droppers are more accurate than teaspoons.
  • If you use a teaspoon, it should be a measuring spoon. Regular spoons are not reliable.
    • 2.5 mL = 1/2 teaspoon
    • 4 mL = 3/4 teaspoon
    • 5 mL = 1 level teaspoon
    • 7.5 mL = 1.5 teaspoons

Acetaminophen (Tylenol)

  • Repeat dose every 4-6 hours while symptoms last.
  • Do not give more than 5 doses in 24 hours.
  • Do not use with any other product containing acetaminophen.
  • Source: HealthyChildren.org

Ibuprofen (Advil, Motrin)

  • Not for use with children under 6 months of age.
  • Repeat dose every 6-8 hours as needed.
  • Do not give more than 4 doses in 24 hours.
  • Source: HealthyChildren.org

Cetirizine (Zyrtec)