Identify the starting unit and the target unit
Find the metric prefix for each unit
Compare the prefixes using powers of 10
Move the decimal point to the right for smaller to larger units
Move the decimal point to the left for larger to smaller units
Multiply by 10 for each step to a smaller unit
Divide by 10 for each step to a larger unit
Use a metric conversion chart if needed
Check that the final unit matches the target unit
Verify the result for reasonableness