Date & Time Tools
Time Calculator
Add or subtract hours, minutes, and seconds.
Free account14-day Pro trialWorks in your browser
Sign in to use this tool
Create a free account to unlock every tool — plus a 14-day free trial of HQ Pro, no card required.
About the Time Calculator
Enter two times in hours, minutes, and seconds, choose add or subtract, and the calculator returns the result in h/m/s along with the totals in minutes and seconds. It's handy for timing tasks, adding up durations, and any hour-minute-second arithmetic.
How to use the Time Calculator
- 01Enter your two times in hours, minutes, and seconds, and an operation.
- 02Read the result instantly — it recalculates as you type.
- 03Adjust the numbers to model different scenarios.
Frequently asked questions
How do I add times together?
Enter both times in hours, minutes, and seconds and choose add — the calculator carries seconds and minutes correctly into the total.
Can it subtract times?
Yes — choose subtract, and it returns the difference (shown negative if the second time is larger).