Pediatric Weight-Based Dosing Calculator
mg/kg dose from body weight.
Enter your values
ⓘ Live results
Results
- Dose per administration
- 180 mg
- Total daily dose
- 540 mg
Quick answer
Weight-based dosing multiplies the child's weight by the prescribed mg/kg dose to get the total dose.
dose (mg) = weight(kg) x mg/kg
How to use the Pediatric Weight-Based Dosing Calculator
- 1Enter the child's weight and the mg/kg dose specified by a prescriber or drug reference.
- 2Multiply by frequency to see the total daily dose.
- 3This is a calculation aid only, not medical advice — always confirm doses with a pharmacist or physician, and never exceed labelled maximums.
Worked example
Using the values the calculator loads with:
Inputs
- Child's weight18 kg
- Prescribed dose10 mg/kg
- Doses per day3
Results
- Dose per administration180 mg
- Total daily dose540 mg
Frequently asked questions
Is this safe to use for actual dosing decisions?
Use it only to double-check arithmetic; final dosing must be confirmed by a qualified healthcare professional.
What if the mg/kg range varies?
Enter the low and high ends separately to see the full dosing range.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.