Calculate accurate medication dosage by body weight, drinking water, or feed mixing for livestock and poultry.
Calculate accurate medication dosage by body weight, drinking water, or feed mixing for livestock and poultry. Input administration route, animal type, body weight, number of animals, label dosage, drug active content, frequency, duration, and daily water/feed intake. Get per-dose and total-course amounts.
You treated 500 layers for respiratory infection with oxytetracycline in drinking water. The label said 400 mg/L, but you used 400 mg per gallon (3.785 L) — 3.8 times too strong. Birds stopped drinking due to bitter taste, became dehydrated, and 25 died. The survivors had kidney damage from overdose. You meant well, but unit confusion (mg/L vs mg/gallon) caused a disaster. Always confirm the unit: per kg body weight, per liter of water, or per kg of feed. And always calculate the total amount for the entire course before starting.
Enter animal weight in kilograms, recommended dosage in mg per kg body weight, drug concentration in mg per ml (for injectables) or mg per tablet (for oral), and number of animals. Click calculate to see total active ingredient needed, volume to inject (ml), number of tablets, and total amount for all animals.
The veterinary dosage calculator helps you calculate the correct medication dose for livestock and pets based on body weight, drug concentration, and recommended dosage. Accurate dosing is critical for effective treatment and avoiding toxicity or under-dosing that leads to antibiotic resistance.
A: Dosage is specified on the drug label or by a veterinarian, usually in mg per kg of body weight (mg/kg). Example: if dosage is 10 mg/kg and animal weighs 50 kg, total dose = 50 × 10 = 500 mg. If drug concentration is 200 mg/ml, injection volume = 500 ÷ 200 = 2.5 ml. Always weigh animals accurately — estimating weight leads to dosing errors.
A: mg/kg is the dosage rate (how much active drug per kg of animal weight). mg/ml is the drug concentration (how much active drug is in each ml of solution). You need both to calculate injection volume: Volume (ml) = Weight (kg) × Dosage (mg/kg) ÷ Concentration (mg/ml). For oral medications in tablets: Number of tablets = Total dose (mg) ÷ Tablet strength (mg/tablet).
A: Under-dosing antibiotics fails to kill bacteria and promotes antibiotic resistance (bacteria survive and become harder to treat). Over-dosing can cause toxicity, tissue damage, and extended withdrawal periods (time before animal products can be safely consumed). Always follow label dosage and withdrawal times. Never use antibiotics without veterinary guidance, and never use antibiotics labeled for other species.