Time Calculator
Add, subtract, multiply, or divide times.
Result
4h 15m 0s
Common use cases
- Total up work hours across a week
- Subtract start/end times for duration
- Calculate time and a half (multiply by 1.5)
- Split a total duration among people
Privacy
Everything runs in your browser. Nothing is uploaded.
Frequently Asked Questions
What does this tool do?
Add, subtract, multiply, or divide times. Perfect for totaling work hours, calculating durations, or time-based math.
What format does it use?
Hours, minutes, and seconds separately. Enter 1 hour 30 minutes 0 seconds as (1, 30, 0).
Can it handle large durations?
Yes. Results display as days, hours, minutes, seconds when the total exceeds 24 hours.
Can I add many times at once?
Yes, click '+ Add time' to add as many rows as you need.
Is it free?
Yes, completely free.