Pediatric Dose Calculator – Weight-Based mg/kg & Liquid Volume

After an exact regimen has been obtained from a current prescription, label, formulary, protocol, guideline, or other authoritative source, multiply current measured weight in kilograms by the submitted mg/kg value. If the source gives mg/kg/day, that result is the 24-hour total and is divided by the submitted doses per 24 hours; if it gives mg/kg/dose, the result is one dose and is multiplied by frequency for the 24-hour total. QuickMedCalc does not choose the regimen.

Sources: [8, 9]

mg/kg/dose applies to each administration; multiplying the resulting dose by the submitted number of doses gives the 24-hour arithmetic. mg/kg/day applies to the whole 24-hour period; dividing by the submitted number of doses gives the per-administration arithmetic. Interchanging the two meanings can produce a major medication error.

Sources: [9]

Enter the exact product concentration as mg per its printed mL volume. The mathematical conversion is limited mg/dose multiplied by concentration mL and divided by concentration mg. The output is a mathematical mL/dose value before medication- and device-specific administration rounding, not an instruction to give that volume.

Sources: [6, 9]

The same medicine may be supplied in different concentrations, so milligrams alone do not identify a liquid volume. Enter both concentration fields from the actual product or leave both blank. The calculator never assumes 5 mL, selects a formulation, or derives concentration from a medicine name.

Sources: [6, 7]

Kilogram-only pediatric medication workflows reduce pounds-versus-kilograms errors. This page requires confirmation of a current measured kg value and does not import an age-estimated weight, accept pounds, or automatically substitute ideal, adjusted, or lean body weight. Drug-specific dosing-weight decisions remain external.

Sources: [7, 8]

No. Known-regimen mode only applies values supplied from an external authoritative regimen. Reference mode exposes three fixed cited branches without deciding whether the medicine, indication, route, schedule, or duration is appropriate. Neither mode diagnoses, prescribes, screens all contraindications, or replaces pharmacist and institutional checks.

Sources: [8]

Young’s and Clark’s rules proportionally derive a child dose from an adult dose; this calculator does not use those rules and does not perform BSA dosing. Current pediatric regimens can depend on the specific medicine, indication, route, age, organ function, formulation, and protocol, so the page requires an already established mg/kg regimen instead of selecting one from an adult-dose rule.

Sources: [8]

Reference mode retains three branches only: amoxicillin for the cited AOM twice-daily branch at completed ages 6–155 months; ibuprofen oral suspension for the cited mild-to-moderate-pain branch at 6–23 months; and acetaminophen injection 15 mg/kg q6h at 24–155 months. Each keeps its cited route, schedule, and maximum semantics.

Sources: [1, 2, 3, 4, 5]

Yes, but only after the applicable regimen has been selected independently and 400 mg/5 mL is confirmed on the actual product. Enter those concentration values with either known-regimen arithmetic or the cited amoxicillin branch. The output is a mathematical volume before final administration rounding, not a prescription or caregiver instruction.

Sources: [1, 6]

No. Prednisolone, domperidone, mefenamic acid, cephalexin, omeprazole, oral acetaminophen/paracetamol, and other unlisted medicines are not source-backed options here. Known-regimen mode can perform arithmetic on a user-supplied mg/kg regimen without knowing the medicine, but it does not validate or recommend that regimen.

Only maximums entered from the applicable external regimen are used. The limited per-administration arithmetic is the lowest of the raw dose, submitted maximum single dose, and submitted maximum 24-hour dose divided by the submitted number of doses. The audit retains the raw values and states whether either submitted cap changed the arithmetic.

Sources: [8, 9]

Appropriate rounding can depend on the medicine, therapeutic margin, calculated volume, calibrated device, product, prescription, and local protocol. The calculator can show the underlying mathematical mL/dose without turning a rounded display into a Sig or administration instruction. Use mL and an appropriate metric dosing device; do not use household spoons.

Sources: [6, 7]