Hours and Duration Calculator
Add work intervals, subtract breaks and convert decimal hours to hours and minutes.
Hover over or focus a field for help. Press Escape to close.
How it works
Paste your content or load the example. Choose the available options, run the tool, then copy or download the result.
A practical example
Time intervals · HH:mm–HH:mm
09:00-12:30 13:30-18:00
Frequently asked questions
Is my input sent to a server?
No. Your content is processed in this browser. It is never sent to the server or saved.
What should I know about Hours and Duration Calculator?
An end time before the start crosses midnight. Breaks are subtracted once from the total.