General Medication Dosage Calculator
Universal dosage calculator for tablets and liquids. Features a scalable formulary database and automatic unit conversions.
mL / tab
Administer:0 mL (or tabs)
About
Medication errors often stem from simple arithmetic mistakes during unit conversion or volume calculation. This tool serves as a universal utility for calculating the administered volume or tablet count based on the "Ordered" vs. "Available" method. It handles both solid (tablets) and liquid preparations, seamlessly converting between grams, milligrams, and micrograms. The integrated database provides standard concentrations for common active ingredients, reducing the need for manual data entry.
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Formulas
The core logic utilizes the dimensional analysis approach:
Amount = Prescribed DoseConcentration On Hand × Vehicle Volume
Reference Data
| Variable | Formula | Description |
|---|---|---|
| Liquid Dose | DH × Q | D=Desired, H=Have (Conc), Q=Vehicle Quantity |
| Solid Dose | DH | Result in tablets/capsules |
| Conversion | 1 mg = 1000 mcg | Auto-applied if units mismatch |
Frequently Asked Questions
The vehicle is the liquid in which the drug is dissolved. For most oral liquids, the vehicle is implied in the concentration (e.g., 100mg per 5mL -> Vehicle is 5mL). For injections, it's often 1mL.
Results are displayed to two decimal places. Clinical judgement should be used when rounding for administration (e.g., you cannot give 1.33 tablets).