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We can use the **DATEDIF()** function to calculate the difference between two dates in Google Sheets.

This function uses the following syntax:

**=DATEDIF(start_date, end_date, unit)**

where:

**start_date:**The start date**end_date:**The end date**unit:**Unit of time to use (“Y”, “M”, “D” for years, months, dates)

The following examples show how to use this function to calculate the difference between two dates in Google Sheets.

**Example 1: Difference in Days**

The following image shows how to calculate the difference (in days) between two dates:

This tells us that there are **1,127** full days between 1/1/2018 and 2/1/2021.

**Example 2: Difference in Months**

The following image shows how to calculate the difference (in months) between two dates:

**Example 3: Difference in Years**

The following image shows how to calculate the difference (in years) between two dates:

**Example 4: Difference in Years & Months**

The following image shows how to calculate the difference (in years and months) between two dates:

The difference between the start and end dates is 3 years and 1 month.

**Additional Resources**

The following tutorials explain how to perform other common operations in Google Sheets:

How to Compare Two Columns in Google Sheets

Google Sheets: How to Sum Across Multiple Sheets

Google Sheets: How to Use SUMIF with Multiple Columns