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⏲️ Time Duration Calculator

Calculate the exact duration between two times or dates with precision. Perfect for tracking work hours, event durations, project time, and time differences.

🕐 Start Time
Hour
Min
Sec
AM/PM
🕐 End Time
Hour
Min
Sec
AM/PM
📅 Start Date & Time
Hour
Min
Sec
AM/PM
📅 End Date & Time
Hour
Min
Sec
AM/PM

⏱️ Duration Result

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⏲️ About Time Duration

Time duration calculation involves finding the exact time difference between two points in time. This is essential for tracking work hours, measuring event lengths, calculating project durations, and various time management tasks.

Our calculator handles both same-day time differences and multi-day duration calculations with precision to the second.

💡 Key Features

Dual Modes: Calculate between times or dates with times
Precise Results: Accurate to the second
Flexible Input: 12-hour format with AM/PM selection
Current Time: Set to now with one click
Swap Function: Easily exchange start and end times
Multiple Formats: View results in various time units

🕐 How to Use

Choose Mode: Select between times or dates calculation
Enter Start Time: Set the beginning time/date
Enter End Time: Set the ending time/date
Calculate: Click calculate to see the duration
Use Tools: Try swap, current time, or clear functions

📊 Calculation Method

Duration calculations involve converting times to a common format and performing subtraction. The calculator handles:

12-hour to 24-hour time conversion
Minute and second borrowing when needed
Date arithmetic for multi-day calculations
Proper handling of AM/PM transitions

All calculations are performed with precision and account for calendar irregularities.