Pediatric Dose Calculator

Dose = kg × mg/kg, capped by optional max; daily = dose × frequency. Click any i for detail.

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Weight & regimen

Weight (kg)
i
Weight

Patient weight in kilograms.

Dose (mg/kg)
i
mg/kg

Ordered mg per kg per administration.

Doses per day
i
Freq

Administrations per day.

Max single dose (mg)
i
Max

Optional cap; 0 = no cap.

How to use this calculator

  1. Enter weight in kg.
  2. Enter mg/kg per dose.
  3. Set doses per day.
  4. Optionally cap with a max single dose.

Results explained

Weight-based dosing multiplies kg by mg/kg. Many drugs also list a maximum single dose — when set, the calculated dose is capped. Always follow the prescribed regimen and reference.

Quick reference: ped dose

dose = min(kg×mg/kg, maxDose?); daily = dose × n.

ItemDetail
20 kg × 10 mg/kg200 mg/dose
2×/day400 mg/day
Max capLimits single dose
lb → kg÷ 2.2 first

Not a prescribing tool — verify with the order and drug reference.

How the estimate is built

dose = weight×mgPerKg; if maxDose>0: dose = min(dose, maxDose); daily = dose×dosesPerDay.

Example scenario

20 kg × 10 mg/kg BID → 200 mg/dose, 400 mg/day.

FAQ

Pounds?

Convert to kg first (lb ÷ 2.2).

BSA dosing?

Not on this page.

Liquid concentrations?

Convert mg to mL using the product strength separately.

Adult max?

Enter the labeled max in the cap field when relevant.