Parse time

Normalize constrained 12-hour or 24-hour clock text and calculate seconds since midnight.

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ToolTime Parser
Input
Output
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Preview

How it works

Anchored patterns accept H:MM[:SS] with AM/PM or without a suffix, validate each component, and apply the noon and midnight conversions. Omitted seconds become 00 and suffix-free input always means 24-hour time.

  • No locale guess turns an unsuffixed 3:45 into an afternoon value.
  • Both outputs include seconds so their precision is explicit.

Worked example

Parse 12-Hour Time
Parse a 12-hour time string into its components
Input
											3:45 PM
Output
												24-hour: 15:45:00
12-hour: 3:45:00 PM
Total seconds since midnight: 56700

When to use this

Scheduling forms normalize AM/PM input, fixtures calculate seconds since midnight, and data cleanup standardizes clock labels.

Edge cases

  • 12:00 AM becomes 00:00:00, while 12:00 PM remains 12:00:00.
  • 3:45 without AM or PM means 03:45.
  • 24:00 and :60 leap seconds are outside the accepted 00:00:00–23:59:59 range.

References