Convert 12 hour time format to 24 hour clock time format, how to calculate 12h AM and PM clock time to 24h time including time conversion table.

h是英语单词hour的缩写，小时的意思，主要用在数学表达式的单位中。 所以12h是12小时的意思。 生活中常用的时间单位还有：秒s、分钟min、日（天）d、月m、年y等。 年的英文是year，缩写为y。

Use this free 24h to 12h clock converter & calculator to easily convert a 24-hour time to 12-hour time (AM & PM). Calculate 12 hour time from 24 hour time, and vice versa.

12小时制属于分段计时法，将1天的24小时分为两段，每段12小时。 从深夜12时起到中午12时叫做上午（午前），再从中午12时起到深夜12时叫做下午（午后）。 而24小时制则采用0到24时计时法。 按照这种计时法，下午1时就是13:00，下午2时就是14:00，以此类推夜里12时就是24:00，又是第二天的00:00。 2、用处不同. 12小时制主要应用于指针式钟表显示，也就是日常生活中使用，时钟每十二个小时旋转一周，而对于24小时旋转一周来说，时针每小时仅仅转动了15°，这个角 …

2020年7月14日 · 十二小时制是一个时间规则把一日24小时分为两个时段，分别为上午 (a.m. ,拉丁文ante meridiem表示中午之前)和下午 (p.m., 拉丁文post meridiem表示中午之后)。 每个时段由12个小时构成，以数字12、1、2、3、4、5、6、7、8、9、10、11依次序表示。 上午时段由子夜至中午，而下午时段由中午至午夜。 二十四小时制的规则是把每日由子夜至中午分为24个小时，从数字0至23 (24是每日完结的午夜)。 这个时间记录系统是现今全世界最常用的。 二十四小时 …

2024年3月4日 · 12 hour time is the time keeping which is based on the 12-hour clock. By this convention, a day is divided into two periods of twelve hours, numbered from 1 to 12, starting …

How to Convert 24 Hour Time to 12 Hour Time. To convert 24-hour time to 12-hour time, follow the instructions below: You can also use a 24-hour clock converter with minutes for the 24-hour to 12-hour time conversion. 24-hour to 12-hour Time Conversion Chart. You can use this chart to convert 24-hour time to 12-hour time format and vice versa.

The 12-hour clock is a time convention in which the 24 hours of the day are divided into two periods: a.m. (from Latin ante meridiem, translating to "before midday") and p.m. (from Latin post meridiem, translating to "after midday"). [1][2] Each period consists of 12 hours numbered: 12 (acting as 0), [3] 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, and 11.

Enter the time in 12-hour format (e.g., 02:30 PM). Click the “Convert to 24-hour format” button. The converted time in 24-hour format will be displayed below. The Time Format Converter is a tool that helps you convert between the 12-hour time format (AM/PM) and the …

2025年2月24日 · Fortunately, it’s super simple to convert from 24-hour time to 12-hour (or standard) time and back. Remember that you only need to convert the hours—the minutes always stay the same. Add 12 to the first hour of the day and include “AM.” In 24-hour time, midnight is signified as 00:00.