Drug Dosage by Weight Calculator
Calculate medication dosage based on patient weight (mg/kg), dosing frequency, and drug concentration.
Medical Disclaimer
This calculator is for informational and educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making decisions about your health. Never disregard professional medical advice or delay seeking it because of results from this tool.
Inputs
Results
Single Dose
700mg
Daily Dose
2,100mg
How to Use This Calculator
- Enter patient weight (kg) and the dosing guideline (mg/kg per dose).
- Set administration frequency (doses per day) and drug concentration (mg/mL) if liquid.
- Review Single Dose (mg), Daily Total Dose, and Volume per Dose (mL).
How the result changes with Patient Weight
| Patient Weight | Single Dose | Daily Dose |
|---|---|---|
| 30 | 300mg | 900mg |
| 105 | 1,050mg | 3,150mg |
| 195 | 1,950mg | 5,850mg |
| 270 | 2,700mg | 8,100mg |
What each input means
- Patient Weight
- Patient body weight in kilograms.
- Dose per kg
- Prescribed dose in milligrams per kilogram of body weight.
- Frequency
- Number of doses administered per day.
- Drug Concentration
- Concentration of the liquid formulation. Leave at default if not applicable.
How this is calculated
Worked example, using the default values
- Identify Input Parameters4 parametersPatient Weight = 70, Dose per kg = 10, Frequency = 3, Drug Concentration = 50 = 4 input(s) provided
- Calculate Single DoseSingle Dose700 = 700
- Calculate Daily DoseDaily Dose2100 = 2100
- Calculate Single Dose VolumeSingle Dose Volume14 = 14
- Calculate Daily Dose VolumeDaily Dose Volume42 = 42
Engine last updated .
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