Skip to content
ENExplore Calculators

Gentamicin Dose Calculator

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

About Gentamicin Dose Calculator

Calculates a once-daily gentamicin dose from weight and suggests the interval band that matches creatinine clearance.

Formula

Extended-interval aminoglycoside dosing

Dose = weight x 5-7 mg/kg; interval 24 h if CrCl >=60, 36 h if 40-59, 48 h if 20-39 mL/min

Worked example

With the default values below, Gentamicin Dose Calculator returns Extended-interval dose of 350. Change any input above and every figure here is recalculated in your browser.

Inputs used

Dosing weightaccepts 2–250 kg
70 kg
Dose per kilogramaccepts 1–7 mg/kg
5 mg/kg
Creatinine clearanceaccepts 5–200 mL/min
80 mL/min

Results

Extended-interval dose
350 mg
Suggested interval
Every 24 hours
Equivalent daily exposure
350 mg/day

Step by step

  1. 1Values used
  2. 2Extended-interval aminoglycoside dosing
  3. 3Extended-interval dose= 350 mg
  4. 4Suggested interval= Every 24 hours
  5. 5Equivalent daily exposure= 350 mg/day

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

Which weight is used?

Ideal body weight in most protocols, with an adjusted weight when actual weight exceeds ideal by more than 20%.

Why is monitoring essential?

Aminoglycosides are nephrotoxic and ototoxic, so levels guide subsequent doses in every protocol.

Related Calculators

Gentamicin Dose Calculator | Calcrivo