Question: what is the difference between metric and standard units?
Answer: Originally Answered: Metric to standard? ... The main difference is that metric uses powers of 10 only (10 mm in a cm, 100 cm in a meter, 1000 m in a km), while the old units did not (12 inches in 1 foot, 3 feet in a yard, 5280 feet in a mile). Metric also uses the same prefixes for each type of measurements.