Metric units

Nurse administering medicine into patient
When administrating medication to patients in small doses, prescriptions are commonly written in grams and milligrams. Use this resource to build your knowledge and confidence when it comes to converting metric units accurately.

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Resource
Available to RCN members

Who is this resource for?

This resource is aimed at nurses and nursing support workers across all settings and levels of practice, including students of health, social work and care professions. 

What will this resource give me?

  • tables showing the different types of measurements
  • information on the consequences of mistakes in drug calculations
  • converting between metric units
  • converting between very large and small numbers
  • converting from imperial to metric units.

Resource last reviewed

12 Feb 2024

Resource lead

The RCN delivers quality-assured and up-to-date resources for the nursing workforce. Reviewed annually in line with the RCN Quality Assurance policy, all RCN Learn resources meet the RCN’s Nine Quality Standards.