24-hour and 12-hour Clock Conversion Worksheets

It's time to learn some cool conversions! These pdf worksheets on converting between the 12-hour and the 24-hour formats are sure to make kids time conversion savvy. To change from the 24-hour clock to the 12-hour clock, subtract 12 hours from any time past 12, the time remains unchanged if it's before 12. Remember to add “a.m.” with the 12-hour format to show time before noon and “p.m.” to denote post noon. To convert from the 12-hour to the 24-hour format, add 12 to the number of hours passed for time marked “p.m.”. Keep in mind the changes occur only in the hour section, while the minutes remain unchanged. The 24-hour format does not take “a.m.” or “p.m.”.

This set of free printable convert between 12-hour and 24-hour worksheets is recommended for 3rd grade, 4th grade, and 5th grade students.

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