Pediatric Dose Calculator
Weight-based dosing for children.
Enter your values
Enter the child weight in kg.
Enter the dose in mg/kg.
Enter the liquid concentration in mg per 5 mL.
Enter the maximum single dose in mg.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Dose per administration
- 270 mg
- Liquid volume
- 8.44 mL
- In teaspoons
- 1.69
- Capped at maximum?
- No
- Daily total if every 6 h
- 1080 mg
Quick answer
Paediatric doses are usually weight-based: multiply mg per kilogram by the child's weight, capped at the adult dose.
Dose = mg/kg × weight
At a glance
| What it does | Weight-based dosing for children. |
|---|---|
| Category | Health |
| Inputs needed | Child weight, Dose, Liquid concentration, Maximum single dose |
| Main output | Dose per administration |
| Formula | Dose = mg/kg × weight |
| Cost | Free — no sign-up, no download |
How to use the Pediatric Dose Calculator
- 1Weigh the child in kilograms.
- 2Enter the prescribed mg/kg dose.
- 3Enter the liquid concentration from the bottle.
Inputs explained
- Child weight(kg)
- Enter the child weight in kg.
- Dose(mg/kg)
- Enter the dose in mg/kg.
- Liquid concentration(mg per 5 mL)
- Enter the liquid concentration in mg per 5 mL.
- Maximum single dose(mg)
- Enter the maximum single dose in mg.
Worked example
Using the values the calculator loads with:
Inputs
- Child weight18 kg
- Dose15 mg/kg
- Liquid concentration160 mg per 5 mL
- Maximum single dose1000 mg
Results
- Dose per administration270 mg
- Liquid volume8.44 mL
- In teaspoons1.69
- Capped at maximum?No
- Daily total if every 6 h1080 mg
Frequently asked questions
Is this a substitute for a prescription?
No — always confirm with the prescriber or pharmacist.
Why weight-based?
Children's drug clearance scales with size, not age.
What do I need to enter into the Pediatric Dose Calculator?
Just 4 values: child weight, dose, liquid concentration, maximum single dose. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Pediatric Dose Calculator work out the answer?
Paediatric doses are usually weight-based: multiply mg per kilogram by the child's weight, capped at the adult dose. It applies the formula Dose = mg/kg × weight and shows the working so you can check each step by hand.
Is the Pediatric Dose Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.