Calculate the exact duration between two dates and times. Perfect for tracking project timelines, event planning, and more.
Follow these simple steps to calculate the duration between two dates and times
Select the starting date and time from the date picker and time selector. This is when your time period begins.
Select the ending date and time. This is when your time period ends.
Press the "Calculate Duration" button to get the exact time duration between your selected dates and times.
View the detailed breakdown of years, months, days, hours, minutes, and seconds between your selected times.
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Our calculator offers unique features that make time calculation simple and accurate
Get precise time duration calculations in seconds with our efficient algorithm.
View results in multiple units including years, months, days, hours, minutes, and seconds.
All calculations happen locally in your browser. We never store your data.
Use our calculator on any device with a responsive design that works perfectly everywhere.
Our calculator automatically accounts for leap years in all duration calculations.
No hidden costs, no registration required. Use our calculator as much as you want.
Find answers to common questions about our Time Duration Calculator
Our calculator is highly accurate and accounts for leap years, different month lengths, and daylight saving time changes where applicable. It calculates the exact duration between two points in time down to the second.
This calculator uses the local time you input. If you need to calculate across time zones, we recommend using our Time Zone Converter first to convert to a common time zone, then use this calculator.
Yes, you can calculate the duration between any two dates, whether they're in the past, present, or future. The calculator works correctly regardless of the time direction.
The calculator uses the exact times you input. If your selected times cross a daylight saving time boundary, the calculation will reflect the actual elapsed time between those specific moments.
This calculator shows the total duration including all days and hours. For business-day calculations excluding weekends and holidays, we recommend checking out our specialized business calculators.
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