Example 1
Inputs
- startDate
- 2026-01-01T09:00
- endDate
- 2026-01-03T09:00
Result
The time difference between January 1, 2026 at 9:00 AM and January 3, 2026 at 9:00 AM is 2 days.
Date & Time
Time Difference Calculator
Calculate the exact difference between two dates and times in days, hours, minutes and seconds.
Time Difference Calculator calculator
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Time Difference Calculator
Enter the values below to calculate your result.
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Your result will appear here
Enter the required values and click Calculate to see your result.
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How does the time difference calculator work?
Enter a start date and time and an end date and time. The calculator finds the difference between them and displays the result as a readable duration along with the total number of days, hours, minutes and seconds.
Formula
Time Difference = End Date & Time − Start Date & TimeExamples
Example 2
Inputs
- startDate
- 2026-01-01T10:00
- endDate
- 2026-01-01T15:30
Result
The time difference between 10:00 AM and 3:30 PM on the same day is 5 hours and 30 minutes.
About this calculator
A time difference calculator helps determine how much time has passed between two dates and times.
It can be useful for calculating the duration of events, work shifts, trips, projects, deadlines and other activities that span a specific period.
The calculator converts the time difference into multiple units so you can see the total duration in days, hours, minutes and seconds.
Frequently asked questions
What is a time difference calculator?
A time difference calculator determines the amount of time between two specified dates and times.
What units does this calculator provide?
It provides the duration as days, hours, minutes and seconds.
Can the dates be on different days?
Yes. The calculator can calculate durations that span multiple days.
What happens if the end time is before the start time?
The calculator will ask you to enter an end date and time that occurs after the start date and time.
Does the calculator account for leap years?
Yes. Date timestamps are used to calculate the actual elapsed time between the two selected date and time values.
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