Dose Per Kilogram Calculator

Work out dose per kilogram instantly with clear inputs, formula shown and shareable results.

About Dose Per Kilogram Calculator

Divides the dose given by body weight so it can be checked against the mg/kg range in the formulary.

Formula

Dose per kilogram

mg/kg per dose = dose / weight; mg/kg/day = mg/kg per dose x doses per day

Worked example

With the default values below, Dose Per Kilogram Calculator returns Dose per kilogram of 20.000. Change any input above and every figure here is recalculated in your browser.

Inputs used

Dose givenaccepts 0.1–20,000 mg: 400 mg
Body weightaccepts 0.5–250 kg: 20 kg
Doses per dayaccepts 1–6: 3

Results

Dose per kilogram: 20.000 mg/kg
Daily dose per kilogram: 60.000 mg/kg/day
Total daily dose: 1,200.0 mg

Step by step

1Values used
2Dose per kilogram
3Dose per kilogram= 20.000 mg/kg
4Daily dose per kilogram= 60.000 mg/kg/day
5Total daily dose= 1,200.0 mg

Assumptions and limits

The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 3 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.

Frequently Asked Questions

Why check both per dose and per day?

Formularies quote limits both ways, and a safe single dose can still breach the daily maximum.

Which weight should be used?

The weight specified by the product literature: actual, ideal or adjusted body weight.