Time Calculator
A time calculator helps you calculate time differences, add or subtract time periods, and convert between different time units. Use our free time calculator to find the duration between two times, calculate future or past times by adding or subtracting hours, minutes, and seconds, and convert time between different formats. This tool is essential for time tracking, work scheduling, project management, and calculating time-based metrics. Calculate time intervals instantly to manage schedules, track work hours, and plan time-sensitive activities.
Free • Time management • Scheduling
How Time Calculation Works
Time Calculation Formula
Time Difference = End Time - Start Time
Future Time: Start Time + Time Period
Past Time: Start Time - Time Period
24-hour Format: 00:00 to 23:59
12-hour Format: 12:00 AM to 11:59 PM
Example Time Calculation
From 9:00 AM to 5:30 PM is 8 hours 30 minutes. Adding 2 hours 45 minutes to 3:15 PM results in 6:00 PM. Converting 150 minutes to hours and minutes gives 2 hours 30 minutes.
This helps with work scheduling and time management.
Benefits of Time Calculator
Frequently Asked Questions
How do you calculate time difference across midnight?
When calculating across midnight, add 24 hours to the end time if it's earlier than the start time, then subtract the start time.
What's the difference between 12-hour and 24-hour format?
12-hour format uses AM/PM (1-12), while 24-hour format uses 00:00-23:59. 24-hour format is standard for military and international time.
How do you convert minutes to decimal hours?
Divide minutes by 60. For example, 30 minutes = 0.5 hours, 45 minutes = 0.75 hours.
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Manage your schedule and track time accurately with our comprehensive time calculator.
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