Convert Time from 12-Hour to 24-Hour Format in Python

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