# 24 Hour Clock Conversion Worksheets

Welcome to the Math Salamanders 24 Hour Clock Conversion Worksheets.

Here you find our selection of 24 hour time math worksheets to help your child learn to convert times between the 12 and 24 hour clock.

## 24 Hour Clock Conversion

### Converting 24 Hour Times

Converting from 24 hour times to 12 hour times The following simple steps will help you change a 24 hour time to a 12 hour time with 'am' and 'pm'.

• If the hour is exactly 12, then simply label it as a pm time.
• If the hour is 00, then change it to 12 and label it as an am time.
• If the hour is greater than 12, then simply subtract 12 from the hour and label it as a pm time.
• Otherwise, simply label it as an am time and take away any leading zeros.

The minutes and seconds never change when changing between 24 hour and 12 hour times.

Examples

14:36 = 2:36pm     02:12 = 2:12am

09:24 = 9:24am     17:48 = 5:48pm

00:45 = 12:45am     12:15 = 12:15pm

20:36 = 8:36pm     23:56 = 11:56pm

Converting from 12 hour times to 24 hour clock The following simple steps will help you change a 12 hour time to a 24 hour time.

• If the hour is exactly 12pm, then simply remove the 'pm' label.
• If the hour is 12am, then change it to 00.
• If the hour is a pm time, then simply add 12 to the hour.
• Otherwise, the hour does not change. If it is less than 10, then add a zero before the digit.

The minutes and seconds never change when changing between 24 hour and 12 hour times.

Examples

1:45am = 01:45     1:45pm = 13:45

4:20am = 04:20     4:20pm = 16:20

11:32am = 11:32     11:32pm = 23:32

12:07am = 00:07     12:07pm = 12:07

### More Recommended Math Worksheets

Take a look at some more of our worksheets similar to these.

## Online Age Calculator

### 24 Hour Clock Online Quiz

Our quizzes have been created using Google Forms.

At the end of the quiz, you will get the chance to see your results by clicking 'See Score'.

This will take you to a new webpage where your results will be shown. You can print a copy of your results from this page, either as a pdf or as a paper copy.

For incorrect responses, we have added some helpful learning points to explain which answer was correct and why.

We do not collect any personal data from our quizzes, except in the 'First Name' and 'Group/Class' fields which are both optional and only used for teachers to identify students within their educational setting.

We also collect the results from the quizzes which we use to help us to develop our resources and give us insight into future resources to create.

This quick quiz tests your knowledge of reading and converting between 12 and 24 clock times.

We hope you have found our 24 Hour Clock Conversion Sheets useful...please feel free to give us feedback below.

How to Print or Save these sheets

Need help with printing or saving?