Generate Valid Clock Times

The Generate Valid Clock Times Tool creates a complete list of valid HH:MM formatted times based on your selected format and step interval. Whether you need a dropdown list for scheduling, testing datasets, or templating times, this tool gives you fast and customizable output.

You can switch between 24-hour and 12-hour AM/PM formats, set your desired step size (like every 15 minutes), and even shuffle the order. The Generate Valid Clock Times Tool updates live and supports copy and export options.

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Options
Shuffle output

How to Use:

  1. Choose the Clock Format from the dropdown:
    • 24-hour (e.g., 14:30)
    • 12-hour with AM/PM (e.g., 02:30 PM)
  2. Select the Step Size for how far apart each time should be:
    • Options: 1, 5, 10, 15, 30, or 60 minutes
  3. Toggle Shuffle Output on if you want the list randomized.
  4. Click Generate to produce the list. Output will flash and display in the right box.
  5. Click Copy Output or Export to File to save your results.
  6. Use Clear All to reset everything.

What Generate Valid Clock Times Tool can do:

This tool generates a list of valid time values from 00:00 to 23:59, based on:

  • Chosen clock format
  • Chosen step interval (granularity)
  • Optional shuffling

It provides real-time output and is great for automated workflows.

Example:

Format: 12-hour
Step Size: 30 minutes

Output:
12:00 AM
12:30 AM
01:00 AM
01:30 AM
...
11:30 PM

Common Use Cases:

Use this tool to build dropdowns for time inputs, populate database templates, test clock-based scheduling systems, or generate mock time entries. With options for step size and output format, it’s flexible for developers, testers, and designers alike.

Useful Tools & Suggestions:

When you’re testing logic or error handling, Add Errors to Clock Times gives you more control over what breaks and how. Or compare it with Generate Valid Clock Times to make sure your boundaries are solid.

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