Date & Time
Time Duration & Hours Calculator
Find elapsed clock time, subtract breaks, and show decimal hours.
Your inputs
Adjust the values
If the end time is earlier than the start time, the calculator treats the shift as crossing midnight.
Net elapsed time
8:00
About this tool
A straightforward time duration & hours calculator
Find elapsed clock time, subtract breaks, and show decimal hours. Clock times are converted to minutes, overnight spans cross midnight, and any break is subtracted from the elapsed total.
The calculator measures one continuous span of up to 24 hours and does not apply time-zone or daylight-saving changes. Inputs are processed in your browser, and changing a value updates the result immediately.
How it works
Use the Time Duration & Hours Calculator in three steps
- 1Enter your values
Choose a start time, end time, and optional break in minutes.
- 2Check the setup
Choose the units or calculation mode that matches your situation.
- 3Use the result
See gross duration, net hours and minutes, decimal hours, and whether the span crosses midnight.
Common questions
Time Duration & Hours Calculator FAQ
How does the Time Duration & Hours Calculator work?
Clock times are converted to minutes, overnight spans cross midnight, and any break is subtracted from the elapsed total.
What information do I need?
Choose a start time, end time, and optional break in minutes.
How accurate is the result?
The calculator measures one continuous span of up to 24 hours and does not apply time-zone or daylight-saving changes.