Free tools · Healthcare and nursing
Drug dosage calculation
Volume from an amount and a concentration you type. It will not suggest a dose.
Dosage arithmetic only. Enter the amount already written on the order and the concentration. This tool never suggests a dose, a drug, or a patient.
What this tool does
The dosage tool does one division. Volume in millilitres is the amount already written on the order, divided by the concentration in amount per millilitre. Both numbers must be yours. The tool does not know the drug, the patient, the route, or the indication, and it will not propose any of them. If either input is missing or not positive, it refuses and repeats that it does not suggest a dose. The result is rounded to two decimal places. A concentration written per tablet, or a dose written per kilogram that you have not already multiplied out, does not belong in the box until you have done that step from the order in front of you. This page is arithmetic practice for people who already have an order. It is not a prescribing aid.
How to use it
Copy the amount from the order into the first box. Copy the concentration, as amount per mL, into the second. Read the volume. Check the units match before you trust the division. If the order says mg and the label says mcg, convert on paper first. The tool will not notice a unit mismatch. Then ask the person responsible for the order if anything is unclear. Do not use the result to start, stop, or change a medicine.
Worked example
An order that already says 250 mg, and a concentration that already says 100 mg per mL, gives 2.5 mL, because 250 divided by 100 is 2.5. The disclaimer on the result is the same every time: volume equals the amount you entered divided by the concentration you entered. Change either input and the volume changes. The tool will not tell you that 250 mg was the right amount. The jobs link on this page searches HiringBuddy for published roles matching “nurse”. An empty list means nothing published matched. It is not a comment on the wider market. A signed-in candidate can save the attempt on their profile. Saving is not an application, and it does not show the attempt to an employer. Employers see people who apply to their own jobs.
Questions
- Will it tell me how much of a drug to give?
- No. It divides two numbers you type. The dose has to already be written on the order.
- What if I leave a box blank?
- It refuses. A blank is not filled with a typical dose.
- Does it convert mg to mcg?
- No. Convert units before you type, or use the engineering unit converter for a general conversion and then come back.