Skip to content
ENExplore Calculators

Ibuprofen Dose Calculator

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

About Ibuprofen Dose Calculator

Calculates a weight-based ibuprofen dose and checks the daily total against the lower of 40 mg/kg/day and the 2.4 g adult ceiling.

Formula

Ibuprofen dosing

Dose = weight x 5-10 mg/kg every 6-8 hours; daily ceiling = min(40 mg/kg/day, 2400 mg/day)

Worked example

With the default values below, Ibuprofen Dose Calculator returns Dose per administration of 200. Change any input above and every figure here is recalculated in your browser.

Inputs used

Body weightaccepts 5–150 kg
20 kg
Dose per kilogramaccepts 2.5–10 mg/kg
10 mg/kg
Doses per dayaccepts 1–4
3

Results

Dose per administration
200 mg
Total daily dose
600 mg
Applicable daily ceiling
800 mg
Ceiling check
Within the usual ceiling

Step by step

  1. 1Values used
  2. 2Ibuprofen dosing
  3. 3Dose per administration= 200 mg
  4. 4Total daily dose= 600 mg
  5. 5Applicable daily ceiling= 800 mg
  6. 6Ceiling check= Within the usual ceiling

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 whole numbers, 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.
  • This is an estimate for general information and not professional medical advice. See the full disclaimer for the limits that apply to this kind of calculator.

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

When should ibuprofen be avoided?

In dehydration, renal impairment, active peptic ulceration and some cardiac conditions; check contraindications first.

Should it be taken with food?

Taking it with food reduces gastric irritation, though it may slightly delay absorption.

Related Calculators

Ibuprofen Dose Calculator | Calcrivo