About this time duration calculator
Calculate the duration between a start time and an end time.
How to use it
Enter the values requested by the calculator. Results update in your browser as you change the inputs. Review the assumptions shown on the calculator before using the result.
Formula
duration = end time − start time
Example
Enter the two times to see the elapsed duration.
Frequently asked questions
What does the time duration calculator show?
Calculate the duration between a start time and an end time.
Are the results exact?
The result is calculated from the inputs and assumptions shown on this page. For important financial, health, tax, or legal decisions, verify the result with an appropriate professional or authoritative source.