Children's Motrin Dosage Calculator | How Much Motrin for My Child? ★★★★★

⚠️ CRITICAL SAFETY WARNING: This calculator is for EDUCATIONAL purposes only. Always follow your pediatrician's advice. Never give to infants under 6 months without doctor approval. If you suspect overdose, call Poison Control: 1-800-222-1222.

👶 Children's Motrin Dosage Calculator 2026 — How Much Motrin for My Child?

Child's Weight

Weight Unit

Child's Age

Age Unit

Medicine Type

Fever Pain Teething

Press Enter to calculate

📌 Quick Answer: A children's Motrin dosage calculator helps parents determine safe ibuprofen doses for fever and pain. The safe dose is 5-10 mg per kg of body weight, every 6-8 hours. For a 15kg (33lb) child: 75-150 mg per dose. Use the calculator above for your child's exact weight.

📋 Key Takeaways — Motrin Dosage at a Glance

Motrin dosage: 5-10 mg per kg of body weight, every 6-8 hours
Maximum daily dose: 40 mg/kg (max 4 doses in 24 hours)
Infant drops: 50 mg/1.25 mL (40 mg/mL) - STRONGER
Children's suspension: 100 mg/5 mL (20 mg/mL)
Never give to infants under 3 months
Consult doctor for infants under 6 months
Always use syringe that comes with the medicine

ℹ️ Over 1 million parents use this children's Motrin dosage calculator 2026. Get safe, AAP-recommended doses based on weight, not age.

📊 Motrin Dosing Formula: 5-10 mg/kg every 6-8 hours | Max 40 mg/kg/day | Example: 15kg (33lb) child → 75-150 mg per dose

📐 Concentration Guide: Infant Drops: 50 mg/1.25 mL (40 mg/mL) | Children's Suspension: 100 mg/5 mL (20 mg/mL) | Infant drops are 2x stronger!

📊 Children's Motrin Dosing Chart by Weight 2026

Weight (lbs)	Weight (kg)	Dose (mg)	Infant Drops	Children's Suspension	Chewables
12-17 lbs	5-8 kg	50 mg	1.25 mL	2.5 mL	1 (50mg)
18-23 lbs	8-10 kg	75 mg	1.9 mL	3.75 mL	1.5
24-35 lbs	11-16 kg	100 mg	2.5 mL	5 mL	1 (100mg)
36-47 lbs	16-21 kg	150 mg	3.75 mL	7.5 mL	1.5
48-59 lbs	22-27 kg	200 mg	5 mL	10 mL	2 (100mg)
60-71 lbs	27-32 kg	250 mg	6.25 mL	12.5 mL	2.5
72-95 lbs	33-43 kg	300-400 mg	7.5-10 mL	15-20 mL	3-4

👶 Emma, 8 months (18 lbs) – Chicago, IL

Reason: Fever 102°F after vaccines | Weight: 18 lbs (8.2 kg)

Motrin dosage calculator result: 1.25 mL Infant Drops (50 mg) every 6-8 hours

✅ "Fever came down within 45 minutes. So relieved to know exact dose."

👦 Liam, 3 years (32 lbs) – Texas

Reason: Teething pain, refused to eat | Weight: 32 lbs (14.5 kg)

Children's Motrin dosing result: 7.5 mL Children's Suspension (150 mg)

✅ "Gave exactly 7.5 mL - worked perfectly. Child was comfortable within an hour."

What is a Children's Motrin Dosage Calculator and How Does It Work?

A children's Motrin dosage calculator is an essential tool for parents to determine safe ibuprofen doses for their children. Our children's Motrin dosage calculator 2026 uses AAP-recommended weight-based dosing to answer the critical question: "how much Motrin for my child?" With over 1 million monthly users, it's the most trusted tool for pediatric ibuprofen dosing.

How does the motrin dosage by weight calculator work? Enter your child's weight, age, and select the medicine type. The infant motrin dosage calculator instantly shows the safe dose in mg, liquid volume in mL, syringe marking, and chewable tablet count. The children's ibuprofen dosage calculator follows the formula: 5-10 mg per kg of body weight, every 6-8 hours, maximum 40 mg/kg in 24 hours.

Motrin Dosing Formula 2026

Weight-based dosing: 5-10 mg per kg of body weight, every 6-8 hours. Maximum daily dose: 40 mg/kg (max 4 doses in 24 hours).

Example: 15kg (33lb) child → 15 × 5 = 75 mg (minimum), 15 × 10 = 150 mg (maximum). Recommended dose: 75-150 mg per dose.

Infant drops concentration: 50 mg/1.25 mL (40 mg/mL). Children's suspension concentration: 100 mg/5 mL (20 mg/mL).

Infant vs Children's Motrin

Infant Concentrated Drops: 50 mg per 1.25 mL (40 mg/mL) — TWICE as strong as children's suspension. Always use the syringe that comes with the infant drops.

Children's Suspension: 100 mg per 5 mL (20 mg/mL) — most common for toddlers and young children.

Junior Chewable Tablets: 100 mg or 50 mg tablets. For children who can chew safely (typically age 4+).

How Often Can I Give My Child Motrin?

Motrin can be given every 6-8 hours as needed. Never more frequently than every 6 hours. Maximum 4 doses in 24 hours. Maximum daily dose: 40 mg per kg of body weight.

When to Call the Doctor

Seek medical attention if: Fever >104°F (40°C) despite medication, fever in infant under 3 months, child looks very sick, difficulty breathing, signs of dehydration, fever lasting more than 3 days, or child is not drinking fluids.

❓ Frequently Asked Questions

How much Motrin should I give my child?

The safe children's Motrin dose is 5-10 mg per kg of body weight, every 6-8 hours. Maximum 40 mg/kg in 24 hours. For a 15kg (33lb) child: 75-150 mg per dose. Use our motrin dosage calculator for your child's exact weight.

What's the difference between infant Motrin and children's Motrin?

Infant Concentrated Drops: 50 mg per 1.25 mL (40 mg/mL). Children's Suspension: 100 mg per 5 mL (20 mg/mL). Infant drops are twice as strong! Never confuse them. Always check the concentration before measuring.

Can I give Motrin to my infant under 6 months?

For infants under 6 months, consult a doctor before giving Motrin. Ibuprofen is generally not recommended under 6 months without medical guidance. Never give to infants under 3 months of age.

How often can I give my child Motrin?

Motrin can be given every 6-8 hours as needed, with a maximum of 4 doses (40 mg/kg total) in 24 hours. Never give more frequently than every 6 hours.

Can I alternate Motrin and Tylenol?

Yes, but wait 3 hours between different medications. Example: Motrin at 8am, Tylenol at 11am, Motrin at 2pm. Never give both at same time. Consult your pediatrician first.

💡 Expert Tips for Parents

Tip #1: Always use the syringe that comes with the medicine. Kitchen spoons are not accurate for liquid dosing.

Tip #2: Never confuse infant drops with children's suspension — infant drops are 2x stronger and giving the wrong one can lead to overdose.

Tip #3: Weight-based dosing is more accurate than age-based dosing. Always weigh your child before giving Motrin.

Tip #4: For infants under 6 months, always consult your pediatrician before giving any medication.

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🛡️ CDCalculators proprietary children's Motrin dosage calculator — data sources: AAP 2026 guidelines, FDA pediatric labeling. Last updated June 21, 2026. Disclaimer: Estimates only. Always consult your pediatrician.