Convert CSV Date Formats

Transform dates between any format in your CSV files. Convert DD/MM/YYYY to YYYY-MM-DD, fix Excel dates, and standardize international formats.

Convert Your Dates Now

Common Date Format Problems We Fix

Example Conversions:

DD/MM/YYYY → YYYY-MM-DD
31/12/2024 → 2024-12-31

MM/DD/YYYY → ISO 8601
12/31/2024 → 2024-12-31

Excel Serial → Standard Date
44926 → 2024-12-31

European Format → US Format
31.12.2024 → 12/31/2024

Why Date Formats Need Converting:

  • Different countries use different date formats
  • Excel exports dates in inconsistent formats
  • Systems require specific date formats (like ISO 8601)
  • Mixed formats in merged data from multiple sources

How Our Date Converter Works

  1. Upload your CSV file with dates to convert
  2. Select the columns containing dates
  3. Choose your target date format
  4. Preview the changes instantly
  5. Download your converted CSV file

Key Features:

  • Smart Format Detection: Automatically identifies input date formats
  • International Support: Handles dates from any country
  • Excel Compatible: Converts Excel serial numbers to readable dates
  • Batch Processing: Convert multiple columns at once
  • Free Tier Available: Process files up to 50KB at no cost

Supported Date Formats

Input Formats
  • DD/MM/YYYY, DD-MM-YYYY
  • MM/DD/YYYY, MM-DD-YYYY
  • YYYY/MM/DD, YYYY-MM-DD
  • DD.MM.YYYY (European)
  • Excel serial numbers
  • Month names (Jan 1, 2024)
Output Formats
  • ISO 8601 (YYYY-MM-DD)
  • US Format (MM/DD/YYYY)
  • UK Format (DD/MM/YYYY)
  • Custom formats available
  • With/without time component

Pricing

Free
Up to 50KB

Perfect for small CSV files

  • ✓ Convert date formats
  • ✓ Preview changes
  • ✓ Basic formats
Standard
$4.99

Up to 1MB file size

  • ✓ All Free features
  • ✓ Larger file support
  • ✓ Custom formats
Premium
$9.99

Up to 5MB file size

  • ✓ All Standard features
  • ✓ Maximum file size
  • ✓ Priority support

Frequently Asked Questions

Yes, our smart format detection can identify and convert multiple date formats within the same column. For example, if you have some dates as "DD/MM/YYYY" and others as "MM/DD/YYYY", we'll correctly interpret and standardize them all.

Our tool identifies invalid dates and highlights them in the preview. You can choose to either skip these entries or replace them with a placeholder value. We'll never output invalid dates that could cause problems in your data.