Date Format Converter for Excel / CSV
Convert date and date-time columns before importing into ERP, CRM, HRM or accounting systems.
Need help choosing the right date format?
Read our guide on converting Excel and CSV date formats before ERP import.
Read Date Format Guide →How to Convert Date Format in Excel or CSV Online
Step 1: Upload File
Upload your Excel or CSV file that contains date columns needing format conversion.
Step 2: Select Formats
Enter the date column name, select the current format and the target format you want to convert to.
Step 3: Download Converted File
Click Convert and download your file with all date values converted to the new format instantly.
Why Convert Date Formats in Excel or CSV?
Converting date formats in Excel or CSV is a very special and essential task for any user because files are received from various sources and converting the date format manually is a very time consuming task using the excel formulas and also it reverts back to its previous state even after the conversion. As such , user get frustrated during the conversion activities. To overcome this problem, this tool is built and introduced in our website so that any user can do the conversion easily within a minute without any effort.
Fix ERP Date Format Errors
SAP, Oracle, Tally and other ERP systems reject CSV files where date formats don't match their expected input format.
Supports Date and Time
Convert date-time values including HH:MM:SS and AM/PM formats — not just date-only columns.
Auto Detect Format
Not sure what format your dates are in? Use Auto Detect and the tool will identify the current format automatically.
Fix Excel Date Serial Numbers
Prevent Excel from converting your dates to serial numbers when opening the file by locking the converted format as text.
No Excel Formula Needed
Skip complex TEXT, DATE, and MID formulas. Upload and convert in seconds with no formula writing.
Free and Private
No login required. Files deleted after processing. Your data stays private.
Supported Date Formats
| Format | Example | Common Usage |
|---|---|---|
| DD/MM/YYYY | 29/06/2026 | India, UK, Australia |
| DD-MM-YYYY | 29-06-2026 | India, Europe |
| YYYY-MM-DD | 2026-06-29 | SAP, MySQL, ISO standard |
| MM/DD/YYYY | 06/29/2026 | USA format |
| DD/MM/YYYY HH:MM:SS | 29/06/2026 14:30:00 | Date with time |
| YYYY-MM-DD HH:MM:SS | 2026-06-29 14:30:00 | Database datetime format |
| DD/MM/YYYY HH:MM AM/PM | 29/06/2026 02:30 PM | 12-hour format |
Common Use Cases for Date Format Conversion
- SAP Import — SAP requires dates in YYYY-MM-DD format. Convert DD/MM/YYYY exports from Indian accounting systems before uploading.
- MySQL Database Import — MySQL DATETIME columns require YYYY-MM-DD HH:MM:SS format. Convert your CSV dates before running LOAD DATA commands.
- CRM Import — Salesforce and HubSpot expect specific date formats. Convert your export files before CRM import.
- Tally to SAP Migration — Tally exports dates in DD-MM-YYYY while SAP requires YYYY-MM-DD. Convert in one click.
- Attendance Reports — HR attendance exports often contain date-time values in mixed formats. Standardize them before payroll processing.
- Invoice Data — Convert invoice date columns from DD/MM/YYYY to YYYY-MM-DD before uploading into accounting software.
Frequently Asked Questions
What date formats can I convert between?
You can convert between DD/MM/YYYY, DD-MM-YYYY, YYYY-MM-DD, MM/DD/YYYY and all date-time variants including HH:MM:SS and AM/PM formats. See the supported formats table above.
Can the tool handle date-time values with hours and minutes?
Yes. The tool supports full date-time conversion including HH:MM:SS 24-hour format and HH:MM AM/PM 12-hour format.
What is "Keep converted date format fixed when opened in Excel"?
When you open a CSV in Excel, Excel automatically converts date-formatted text into its own serial number format. Enabling this option stores the dates as text strings so Excel cannot auto-convert them — useful when you need to preserve the exact format for ERP import.
Can I auto-detect the current date format?
Yes. Select "Auto Detect" in the current format dropdown and the tool will analyse your date column and identify the format automatically.
What file formats are supported?
Excel (.xlsx) and CSV (.csv) files are both supported. The converted file is downloaded as a CSV.
Is my file data safe?
Yes. Files are processed temporarily and deleted immediately after conversion. We never store or share your data.