Calculate
How to use this calculator
Choose a start and end time.
How it's calculated
Duration = end time − start time. If the end is earlier, it is counted past midnight.
Worked example
22:30 to 06:15 is 7 hours 45 minutes.
Frequently asked questions
Is Phademy free?
Yes. Phademy tools are designed to be free to use.
Do I need an account?
No. The calculator works directly in your browser without an account.
Related tools
Last updated October 2026. Results are estimates for guidance. Calculations run in your browser and are not stored.