MS Excel DATEDIF Function. Calculate Years and Months years Video Summary • You learn how to use the DATEDIF function in MS Excel. • You calculate years between two dates. • You calculate months between two dates. • You get quick and accurate results. • You save time in daily work. What You Learn • DATEDIF function structure. • Start date and end date usage. • Y argument to calculate years. • YM argument to calculate months. • One clear real life example. Why It Helps You • You calculate age and