Time Calculator
Add durations, subtract with a minus sign, or compare two clock times across midnight.
Runs in your browser — nothing is uploaded—
Details
How to use Time Calculator
- Choose between two times or adding durations.
- Enter the times (overnight shifts work) or paste durations.
- Read the total in hours and minutes, decimal hours and optional pay.
Example: 1:30:15 − 0:15:30 + 0.5 decimal hours = 1:44:45.
Questions
How do I subtract a duration?
Put a minus sign before an entry. Use H:MM:SS for seconds or decimal hours; elapsed clock-time mode treats an earlier end as the next day.