Create a Date Matrix

Create a Date Matrix is a fast, flexible way to format a list of dates into a structured output. Whether you’re working on reports, data entry, scheduling, or custom calendar layouts, this tool turns date strings into a clean, uniform format with just a few toggles.

Paste your input above or import a file below.
No file chosen
Supported file types: .txt, .csv
Total characters: 0
Options
Use dash separator
Pad single digits with zero
Add row labels

How to Use:

  1. Paste or type your dates in the YYYY-MM-DD format, one per line, into the input box on the left.
  2. Use the Options panel to control formatting:
    • Toggle padding, separators, and row labels as needed.
  3. Your formatted matrix appears instantly on the right.
  4. Copy the results or export them as a file using the buttons provided.
  5. You can also load a .txt or .csv file of dates using the Choose File button.
  6. Use Clear All to reset the input and output.

What Create a Date Matrix can do:

  • Formats multiple dates line-by-line with live preview.
  • Validates and skips malformed dates.
  • Offers formatting options for a customized layout.

Tool Options:

  • Pad single digits with zero: Converts 2025-6-1 to 2025-06-01
  • Use dash separator: Choose between YYYY-MM-DD and YYYYMMDD
  • Add row labels: Prefixes each line like Row 1: 2025-06-01

Example:

With all toggles enabled:

2025-6-1
2025-12-31

Results in:

Row 1: 2025-06-01
Row 2: 2025-12-31

Common Use Cases:

Create a Date Matrix is ideal for building date grids for CSV exports, programming inputs, schedule formats, or printed calendars. It helps you clean up inconsistent date formats and prepare tidy, ready-to-use data in seconds.

Useful Tools & Suggestions:

For organizing by time, Create a Time Matrix works the same way but focuses on hours and minutes. And if you need to feed it with structured input, Generate a Date Sequence lays out the perfect foundation.

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