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Pet Anaesthesia Dose Calculator

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

About Pet Anaesthesia Dose Calculator

Calculates a weight-based induction dose and reduces it for premedication, then converts to the volume to draw up.

Formula

Induction dose

Dose = weight x mg/kg x (1 - premedication reduction); volume = dose / concentration

Worked example

With the default values below, Pet Anaesthesia Dose Calculator returns Induction dose after premedication of 60.00. Change any input above and every figure here is recalculated in your browser.

Inputs used

Animal weightaccepts 0.2–200 kg
20 kg
Induction doseaccepts 0.1–50 mg/kg
4 mg/kg
Preparation strengthaccepts 0.5–200 mg/mL
10 mg/mL
Reduction for premedicationaccepts 0–60
25

Results

Induction dose after premedication
60.00 mg
Volume to draw up
6.000 mL
Dose without premedication
80.00 mg
Practical note
Induction agents are titrated to effect, so the calculated dose is drawn up but given incrementally

Step by step

  1. 1Values used
  2. 2Induction dose
  3. 3Induction dose after premedication= 60.00 mg
  4. 4Volume to draw up= 6.000 mL
  5. 5Dose without premedication= 80.00 mg
  6. 6Practical note= Induction agents are titrated to effect, so the calculated dose is drawn up but given incrementally

Assumptions and limits

  • The result is derived only from the 4 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 titrate rather than bolus?

Induction requirement varies widely; giving the full calculated dose as a bolus risks apnoea and hypotension.

Does body condition matter?

Yes. Lean body weight is normally used for lipophilic induction agents in obese animals.

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