Python program to convert time from 12 hour to 24 hour format

In this article, we will learn how to convert time from 12 to 24 hours format. Let’s say we have the following input date in 12-hour format −

10:25:30 PM

The following is the output in 24-hour format −

22:25:30

Convert current time from 12 hour to 24 hour format

To convert time from 12 hour to 24 hour format, here’s the code −

Example

import datetime

def timeconvert(str1):
	if str1[-2:] == "AM" and str1[:2] == "12":
		return "00" + str1[2:-2]
	elif str1[-2:] == "AM":
		return str1[:-2]
	elif str1[-2:] == "PM" and str1[:2] == "12":
		return str1[:-2]
	else:
		return str(int(str1[:2]) + 12) + str1[2:8]
dt = datetime.datetime.now()
print("Current Date and Time = ",dt)
print("24 hour format Time = ",timeconvert(dt.strftime("%H:%M:%S")))

Output

Current Date and Time = 2022-08-03 06:26:55.927011
24 hour format Time = 18:26:55

Convert current time from 12 hour to 24 hour format using strptime() method

To convert time from 12 hour to 24 hour format using a built-in method strptime() method, here’s the code −

Example

from datetime import *

# Set the time in 12-hour format
current_time = '5:55 PM'
print("Time = ",current_time)

# Convert 12 hour time to 24 hour format
current_time = datetime.strptime(current_time, '%I:%M %p')
print("Time in 24 hour format = ",current_time)

Output

Time = 5:55 PM
Time in 24 hour format = 1900-01-01 17:55:00