Time Calculator
Add or subtract hours, minutes, and seconds easily. Calculate time duration between two points with this free online time calculator.
About Time Calculator
Add or subtract time durations easily. Calculate the total time between two events or add hours/minutes to a start time.
Frequently Asked Questions
Can I add hours and minutes?
Yes, you can enter hours, minutes, and seconds to add them together.
Does it handle 24-hour format?
Yes, calculations are based on absolute time duration, so 24-hour logic applies.
Can I subtract time?
Yes, select 'Subtract' from the operation dropdown to find the difference between two times.
What happens if seconds go over 60?
The calculator automatically converts 60 seconds to 1 minute, and 60 minutes to 1 hour.
Is it useful for timesheets?
Yes, it's perfect for calculating total hours worked.
Can I calculate negative time?
Yes, if you subtract a larger time from a smaller one, the result will show a negative value.
Is it free?
Yes, 100% free.
Do I need to download an app?
No, it works in your browser.
How precise is it?
It is precise to the second.
Can I use decimal hours?
Currently it accepts HH:MM:SS integers. We recommend converting decimals to minutes first.