⚖️

Dosage Conversion Basics

Sep 11, 2025

Overview

This lecture covers essential dosage calculation conversions necessary for nursing students, focusing on fundamental metric and weight equivalents.

Basic Dosage Conversion Factors

  • 1 grain (gr) = 65 milligrams (mg).
  • 1 liter (L) = 1,000 milliliters (mL).
  • 1 milligram (mg) = 1,000 micrograms (mcg).
  • 1 kilogram (kg) = 1,000 grams (g).
  • 1 kilogram (kg) = 2.2 pounds (lbs), crucial for pediatric dosing.

Application in Nursing

  • Accurate conversions are vital for safe dosage calculation in nursing practice.
  • The kilogram to pounds conversion is especially important in pediatric medication calculations.

Key Terms & Definitions

  • Milligram (mg) — a unit of mass equal to one-thousandth of a gram.
  • Microgram (mcg) — a unit of mass equal to one-millionth of a gram.
  • Grain (gr) — a unit of mass used in pharmacy, equal to 65 mg in dosing.
  • Kilogram (kg) — a metric unit of mass equal to 1,000 grams.
  • Liter (L) — a metric unit of volume equal to 1,000 milliliters.

Action Items / Next Steps

  • Memorize these core dosage conversion factors.
  • Practice converting between these units for dosage calculations.
  • Review flashcards or resources from the nursing school dose calculation box.