Time
Excel Date Converter
Convert Excel serial date numbers to readable dates and vice versa.
Excel Serial to Date
Readable Date
May 20, 2026
Date to Excel Serial
Excel Serial
46179
Excel Date Format
Excel stores dates as sequential serial numbers so that they can be used in calculations. By default, January 1, 1900 is serial number 1. Note: This tool uses the 1900 date system standard for Windows/Mac Excel.
Documentation
How to Use
1
Enter Excel serial
Type the Excel date number (e.g., 46162).
2
View result
The human-readable date appears instantly.
3
Convert back
Enter a date to get its Excel serial number.
Pro Tips
Excel serial 1 = January 1, 1900
This uses the Windows/Mac Excel 1900 date system