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Livestock Dewormer Dose Calculator

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

About Livestock Dewormer Dose Calculator

Calculates the dose volume per animal from weight and product strength, then totals the product needed for the group.

Formula

Group dosing

Volume per animal = weight x mg/kg / concentration; total = volume per animal x number of animals

Worked example

With the default values below, Livestock Dewormer Dose Calculator returns Dose volume per animal of 3.084. Change any input above and every figure here is recalculated in your browser.

Inputs used

Average animal weightaccepts 5–1,200 kg
350 kg
Doseaccepts 0.01–20 mg/kg
0.2 mg/kg
Product strengthaccepts 0.5–500 mg/mL
22.7 mg/mL
Animals to treataccepts 1–5,000
40

Results

Dose volume per animal
3.084 mL
Total product needed
123.3 mL
Total active ingredient
2,800.0 mg
500 mL bottles required
0.25

Step by step

  1. 1Values used
  2. 2Group dosing
  3. 3Dose volume per animal= 3.084 mL
  4. 4Total product needed= 123.3 mL
  5. 5Total active ingredient= 2,800.0 mg
  6. 6500 mL bottles required= 0.25

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

Should the group be dosed to the average weight?

No. Dosing to the heaviest animal in the group avoids underdosing, which drives anthelmintic resistance.

Why does underdosing matter?

It exposes parasites to sub-lethal concentrations and selects strongly for resistant genotypes.

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