Subscribe Now: Watch More: Counting the number of unique values in a range in Excel is especially useful if you have a very large data set. Count the number of unique values in a range in Excel with help from a mechanical engineer with 32 years of experience in a large aerospace company in this free video clip. Expert: Edward Russell Filmmaker: Patrick Russell Series Description: If you're looking for a powerful spreadsheet creation tool, look no farther than Microsoft Excel. Get tips on Excel with help from a mechanical engineer with 32 years of experience in a large aerospace company in this free video series.