Time Format Validator
Validate time strings.
Validate time format (HH:MM, HH:MM:SS, 12h) instantly. Free time string checker.
Calculator Inputs
About Time Check
Validate time strings.
Accepts 24h, 12h AM/PM, with optional seconds.
Where it is used
Form validation, CSV cleanup, scheduling apps.
How to use the Time Check
- Time String — enter the value (e.g. 14:30 or 02:30 PM).
- Calculate — press the Calculate button to see the result instantly above.
Formula
HH 00-23, MM/SS 00-59, or 12h with AM/PM.
Examples
Example
time:14:30
Result: VALID ✓ 24h (14:30)
Frequently Asked Questions
- Seconds allowed?
- Yes: HH:MM:SS.