A baby medicine dosage calculator is a weight-based tool that determines the correct amount of acetaminophen (Tylenol) or ibuprofen (Motrin/Advil) for infants and children, based on AAP-published dosing tables.
Baby Medicine Dosage Calculator
Weight-based dosing for acetaminophen (Tylenol) and ibuprofen (Motrin/Advil). Based on AAP-published dosing tables.
This is not medical advice. Always confirm dosing with your pediatrician before giving any medication.
Safety Tips
- Always use the syringe or dosing cup that comes with the medicine — never a kitchen spoon.
- Check all medications (including cough/cold products) for acetaminophen to avoid double-dosing.
- Never give aspirin to children or teenagers.
- Store all medicine out of reach of children.
- If your child vomits immediately after a dose, contact your pediatrician before re-dosing.
Sources
- AAP dosing tables via HealthyChildren.org — Acetaminophen
- AAP dosing tables via HealthyChildren.org — Ibuprofen
- MedlinePlus — Acetaminophen
Complete Dosing Reference Tables
Weight (lbs): 6 - 11
Dose (mg): 40
Volume (mL): 1.25
Weight (lbs): 12 - 17
Dose (mg): 80
Volume (mL): 2.5
Weight (lbs): 18 - 23
Dose (mg): 120
Volume (mL): 3.75
Weight (lbs): 24 - 35
Dose (mg): 160
Volume (mL): 5
Weight (lbs): 36 - 47
Dose (mg): 240
Volume (mL): 7.5
Weight (lbs): 48 - 59
Dose (mg): 320
Volume (mL): 10
Weight (lbs): 60 - 71
Dose (mg): 400
Volume (mL): 12.5
Weight (lbs): 72 - 95
Dose (mg): 480
Volume (mL): 15
Weight (lbs): 96+
Dose (mg): 640
Volume (mL): 20
| Weight (lbs) | Dose (mg) | Volume (mL) |
|---|---|---|
| 6 - 11 | 40 | 1.25 |
| 12 - 17 | 80 | 2.5 |
| 18 - 23 | 120 | 3.75 |
| 24 - 35 | 160 | 5 |
| 36 - 47 | 240 | 7.5 |
| 48 - 59 | 320 | 10 |
| 60 - 71 | 400 | 12.5 |
| 72 - 95 | 480 | 15 |
| 96+ | 640 | 20 |
Concentration: 160 mg / 5 mL. Interval: Every 4-6 hours. Maximum 5 doses per 24 hours. Not for infants under 3 months without a doctor's guidance.
Weight (lbs): 12 - 17
Dose (mg): 50
Volume (mL): 2.5
Weight (lbs): 18 - 23
Dose (mg): 75
Volume (mL): 3.75
Weight (lbs): 24 - 35
Dose (mg): 100
Volume (mL): 5
Weight (lbs): 36 - 47
Dose (mg): 150
Volume (mL): 7.5
Weight (lbs): 48 - 59
Dose (mg): 200
Volume (mL): 10
Weight (lbs): 60 - 71
Dose (mg): 250
Volume (mL): 12.5
Weight (lbs): 72 - 95
Dose (mg): 300
Volume (mL): 15
Weight (lbs): 96+
Dose (mg): 400
Volume (mL): 20
| Weight (lbs) | Dose (mg) | Volume (mL) |
|---|---|---|
| 12 - 17 | 50 | 2.5 |
| 18 - 23 | 75 | 3.75 |
| 24 - 35 | 100 | 5 |
| 36 - 47 | 150 | 7.5 |
| 48 - 59 | 200 | 10 |
| 60 - 71 | 250 | 12.5 |
| 72 - 95 | 300 | 15 |
| 96+ | 400 | 20 |
Concentration: 100 mg / 5 mL. Interval: Every 6-8 hours. Maximum 4 doses per 24 hours. Not for infants under 6 months.