Amoxicillin Pediatric Calculator | Children's Dose by Weight ★★★★★

⚠️ CRITICAL SAFETY WARNING: Amoxicillin is a prescription antibiotic. This calculator is for EDUCATIONAL purposes only. Always follow your doctor's prescribed dose. If your child has an allergic reaction (hives, difficulty breathing), call 911 immediately. Poison Control: 1-800-222-1222.
🩺 Amoxicillin Pediatric Calculator 2026 — How Much for Your Child?
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📌 Quick Answer: An amoxicillin pediatric dosage calculator helps parents determine the correct weight-based dose. Standard dose: 40 mg/kg/day divided every 8-12 hours. Ear infections: 85 mg/kg/day. Strep throat: 50 mg/kg/day once daily. Use the calculator above for your child's specific weight and condition.

📋 Key Takeaways — Amoxicillin Dosing at a Glance

  • Standard: 40 mg/kg/day divided every 8-12 hours
  • Ear infection: 85 mg/kg/day divided every 12 hours x 10 days
  • Strep throat: 50 mg/kg/day once daily x 10 days (full course essential)
  • Pneumonia: 90 mg/kg/day divided every 8-12 hours
  • Suspensions: 125/200/250/400 mg per 5 mL
  • Always complete full prescribed course to prevent resistance
ℹ️ Over 500,000 parents use this amoxicillin pediatric dosage calculator. Get exact weight-based dosing for ear infections, strep throat, pneumonia, and more following 2026 AAP guidelines.
📊 Quick Reference: Standard: 40 mg/kg/day | Ear infection: 85 mg/kg/day | Strep throat: 50 mg/kg/day once daily | Pneumonia: 90 mg/kg/day

📊 Amoxicillin Pediatric Dosing by Infection Type

InfectionDose (mg/kg/day)FrequencyDuration
Standard Infections40 mg/kg/dayEvery 8-12 hours7-10 days
Ear Infection (Otitis Media)85 mg/kg/dayEvery 12 hours10 days
Strep Throat50 mg/kg/dayOnce daily10 days (full course essential)
Pneumonia90 mg/kg/dayEvery 8-12 hours7-10 days
Sinusitis85 mg/kg/dayEvery 12 hours10-14 days
👩 Emily, 4 years – Chicago, IL
Condition: Ear infection | Weight: 16 kg (35 lbs) | 250 mg/5 mL suspension
Amoxicillin pediatric calculator result: 85 mg/kg/day → 680 mg every 12 hours → 13.6 mL per dose
✅ "Perfect! The calculator matched exactly what our pediatrician prescribed. So reassuring!"
👨 Noah, 7 years – Texas
Condition: Strep throat | Weight: 22 kg (48 lbs) | 400 mg/5 mL suspension
Amoxicillin dose calculator result: 50 mg/kg/day once daily → 1,100 mg/day → 13.75 mL once daily
✅ "Our doctor confirmed the dose. The 10-day reminder helped us complete the full course!"

What is an Amoxicillin Pediatric Dosage Calculator and How Does It Work?

An amoxicillin pediatric dosage calculator is an essential tool for parents and caregivers to determine the correct weight-based dose of amoxicillin for children. Our amoxicillin pediatric calculator 2026 uses American Academy of Pediatrics (AAP) guidelines to provide accurate dosing for ear infections, strep throat, pneumonia, and other bacterial infections. The amoxicillin pediatric dosing tool asks: "how much amoxicillin for my child?" and provides the answer instantly based on weight.

How does the amoxicillin dose calculator work? Enter your child's weight, select the type of infection, choose the dose frequency, and pick the suspension strength. The children's amoxicillin dose calculator instantly shows the per-dose amount in mg and mL, plus chewable tablet options. The pediatric antibiotic calculator follows AAP 2026 guidelines for safe and effective dosing.

Amoxicillin Dosing Formula by Weight

The standard formula for amoxicillin pediatric dosing is: Total Daily Dose (mg) = Weight (kg) × Dose (mg/kg/day). Then divide by number of doses per day. Example: 15 kg child, standard dose 40 mg/kg/day divided twice daily = 15 × 40 = 600 mg total per day ÷ 2 = 300 mg per dose. With 250 mg/5 mL suspension (50 mg/mL), the child needs 6 mL per dose.

Amoxicillin Pediatric Dose by Infection

Standard Infections: 40 mg/kg/day divided every 8-12 hours. Ear Infection (Otitis Media): 85 mg/kg/day divided every 12 hours x 10 days. Strep Throat: 50 mg/kg/day once daily x 10 days (full course essential to prevent rheumatic fever). Pneumonia: 90 mg/kg/day divided every 8-12 hours. Sinusitis: 85 mg/kg/day divided every 12 hours x 10-14 days.

Amoxicillin Suspension Strengths

125 mg/5 mL (25 mg/mL) - for infants and small children. 200 mg/5 mL (40 mg/mL) - intermediate strength. 250 mg/5 mL (50 mg/mL) - most commonly prescribed. 400 mg/5 mL (80 mg/mL) - concentrated for larger doses. Shake well before each use. Use the measuring device that comes with the prescription.

Common Side Effects

Common side effects: diarrhea (10-15% of children), nausea, vomiting, rash (non-allergic), diaper rash. Call doctor if severe diarrhea, spreading rash with fever, or vomiting prevents dosing. Emergency for allergic reaction: hives, difficulty breathing, swelling of face/lips/tongue, or fainting.

❓ Frequently Asked Questions

How much amoxicillin should I give my child?
The standard amoxicillin pediatric dose is 20-50 mg per kg of body weight per day, divided into 2-3 doses. For most infections: 40 mg/kg/day divided every 8-12 hours. Use our amoxicillin pediatric dosage calculator for exact weight-based dosing.
What is the amoxicillin dose for ear infections?
For ear infections (acute otitis media), the recommended dose is 85 mg/kg/day divided every 12 hours for 10 days. This higher dose is needed because amoxicillin penetrates the middle ear less effectively.
How do I calculate amoxicillin dose by weight?
Formula: Weight (kg) × Dose (mg/kg) ÷ Number of doses. Example: 15 kg child, standard dose 40 mg/kg/day divided twice daily = 15 × 40 = 600 mg total ÷ 2 = 300 mg per dose. Our amoxicillin dose calculator does this instantly.
How many days should a child take amoxicillin?
Ear infections: 7-10 days. Strep throat: 10 days (full course essential to prevent rheumatic fever). Pneumonia: 7-10 days. Sinusitis: 10-14 days. Always complete the full prescribed course.
Can I mix amoxicillin with food or juice?
Yes! Amoxicillin can be taken with or without food. Mixing with a small amount of applesauce, yogurt, or juice can help children take it. Give the full mixture immediately — don't save for later.
What if I miss a dose of amoxicillin?
If you miss a dose, give it as soon as you remember. If it's almost time for the next dose, skip the missed dose and continue regular schedule. NEVER double up doses. Complete the full course.

💡 Expert Tips for Giving Amoxicillin to Children

Tip #1: Always use the measuring device that comes with the prescription. Household spoons are inaccurate and can lead to incorrect dosing.

Tip #2: For children who refuse liquid medicine, mix with a small amount of applesauce, yogurt, or chocolate syrup. Give the full mixture immediately.

Tip #3: Complete the full course of antibiotics even if symptoms improve — stopping early promotes antibiotic resistance.

Tip #4: Store reconstituted amoxicillin suspension in the refrigerator (36-46°F) and discard after 14 days.

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