Dosage Calculation

What is Dosage Calculation for Nurses?

Medication administration is one of the many duties nurses do each day. Using a medication order or prescription, a nurse must calculate the appropriate dosage given the medication they have on hand.

Download Dosage Calculation Practice Questions

Download the questions and work along with Cathy as she goes through a number of Nursing Dosage Calculations problems. You can also download the answer key!

PRACTICE QUESTIONS
PRACTICE ANSWERS

Nursing Dosage Calculations, Part 1: Example Problems 1-3

Nursing Dosage Calculations, Part 1: Example Problems 1-3

by Cathy Parkes

In this video, Cathy covers Dosage Calculation practice problems 1-3. You can download the practice questions and answer key and follow along as she explains how to work through the problems.
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Nursing Dosage Calculations, Part 2: Example Problems 4-5

Nursing Dosage Calculations, Part 2: Example Problems 4-5

by Cathy Parkes 2 Comments

In this video, Cathy covers Dosage Calculation practice problems 4-5. You can download the practice questions and answer key and follow along as she explains how to work through the problems.
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Nursing Dosage Calculations, Part 3: Example Problems 6-9

Nursing Dosage Calculations, Part 3: Example Problems 6-9

by Cathy Parkes 1 Comment

In this video, Cathy covers Dosage Calculation practice problems 6-9. You can download the practice questions and answer key and follow along as she explains how to work through the problems.
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Dosage Calculation FAQs

What is Dosage Calculation?

Remember how hot dogs come in a package of 10 but hot dog buns come in a package of 8? Well, medication volumes and units can sometimes feel like that too — but the stakes are much higher. The volume and units that a medication order is written in, is rarely the same volume or units that you have on hand. You must calculate, and often convert, the correct dosage to administer a patient.

Why are dosage calculations important to nurses?

In order to provide safe nursing care and medication administration, you must calculate dosages correctly. Mistakes can put patients' lives at risk, so dosage calculations are a key part of patient safety.

Some consider drip and infusion percentage calculations to be more dificult than calculations for solids, liquid oral and injections, so it's important to practice all types of dosage calculations through regular testing and assessment.

How do you calculate medication dosage by weight?

Dosages are often listed by how much should be administered per unit of the patient's body weight. For example, ".3ml/kg." You may first have to convert your patient's weight from pounds to kilograms, then you calculate the total medication volume from there.