Very basic dosage calculations refresher – Dosage Calcs

Common Conversion Factors in Medical Dosage Calculations

As a healthcare professional, you have to convert patient weights, fluid volumes, medication weights, and more. Conversion math isn’t hard to do as long as you know the basic conversion factors. Here are the most useful ones:

Converting lb to kg and kg to lb

lb = kg × 2.2

kg = lb ÷ 2.2

Converting mL to L and L to mL

mL = L × 1,000

L = mL ÷ 1,000

Converting mg to g, g to mg, mg to mcg, and mcg to mg

mg = g × 1,000

g = mg ÷ 1,000

mcg = mg × 1,000

mg = mcg ÷ 1,000

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Anna Curran. RN, BSN, PHN

Anna Curran. RN, BSN, PHN
Clinical Nurse Instructor

Emergency Room Registered Nurse
Critical Care Transport Nurse
Clinical Nurse Instructor for LVN and BSN students

Anna began writing extra materials to help her BSN and LVN students with their studies and writing nursing care plans. She takes the topics that the students are learning and expands on them to try to help with their understanding of the nursing process and help nursing students pass the NCLEX exams.

Her experience spans almost 30 years in nursing, starting as an LVN in 1993. She received her RN license in 1997. She has worked in Medical-Surgical, Telemetry, ICU and the ER. She found a passion in the ER and has stayed in this department for 30 years.

She is a clinical instructor for LVN and BSN students and a Emergency Room RN / Critical Care Transport Nurse.

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