Length of a project
| A | B | |
|---|---|---|
| 1 | Start | End |
| 2 | 1/1/2024 | 3/1/2024 |
Formula: D2: =DAYS(B2,A2)
Result: 60
2024 is a leap year, so January and February add up to 60 days.
Google Sheets function
DAYS in Google Sheets
DAYS with worked examples you can test in the live grid. The argument details are in the Excel guide.
In Google Sheets
The arguments and common errors are covered in the DAYS Excel guide; check the function help in Google Sheets for its own argument list.
Worked examples in Google Sheets
Arguments in the wrong order
| A | B | |
|---|---|---|
| 1 | Start | End |
| 2 | 1/1/2024 | 3/1/2024 |
Formula: D2: =DAYS(A2,B2)
Result: -60
Swapping the dates simply flips the sign of the answer.
Days in a year
| A | |
|---|---|
| 1 |
Formula: A1: =DAYS(DATE(2025,1,1),DATE(2024,1,1))
Result: 366
From January 1, 2024 to January 1, 2025 is 366 days.
Try it
A tiny spreadsheet with example data. Edit the formula or any number and see the result.
Formula in F2: =DAYS(B2,A2)
| A | B | C | D | E | F | |
|---|---|---|---|---|---|---|
| 1 | Start | End | Holiday | Time | Result | |
| 2 | 3/15/2026 | 6/20/2026 | 5/1/2026 | 14:45 | 97 | |
| 3 | 1/31/2026 | 2/28/2026 | 5/9/2026 | 09:30 | ||
| 4 | 12/24/2025 | 1/9/2026 |
Result in F2: 97
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